<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:ef84a633-b2ac-466a-9254-220546c97120,g:6c739029-2f81-4fa7-95b1-0c7972724e86-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.bwxt.com/role/Cover" xlink:type="simple" xlink:href="bwxt-20251231.xsd#Cover"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_18210b4f-398d-4bd6-8042-deae2a92c3e7" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_DocumentType_18210b4f-398d-4bd6-8042-deae2a92c3e7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentAnnualReport_f19d78ad-e751-4ad6-a5c8-d3c03b6ea3b1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentAnnualReport"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_DocumentAnnualReport_f19d78ad-e751-4ad6-a5c8-d3c03b6ea3b1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_e831dfeb-8cd7-4dd9-abaa-ea1623e822be" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_DocumentPeriodEndDate_e831dfeb-8cd7-4dd9-abaa-ea1623e822be" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_0faa7055-e50c-44c9-acf7-e27998ed1a4b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_CurrentFiscalYearEndDate_0faa7055-e50c-44c9-acf7-e27998ed1a4b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport_4a5d1392-2f1e-4060-a9ea-3efc348cf2be" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentTransitionReport"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_DocumentTransitionReport_4a5d1392-2f1e-4060-a9ea-3efc348cf2be" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_7d8307ef-7c03-4bf0-84a7-afe7ed960a5e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityFileNumber_7d8307ef-7c03-4bf0-84a7-afe7ed960a5e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_685be72a-5d38-49d7-b1f0-9e276a774308" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityRegistrantName_685be72a-5d38-49d7-b1f0-9e276a774308" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_caba01e1-ea19-49e8-88ce-00459b13bb90" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityIncorporationStateCountryCode_caba01e1-ea19-49e8-88ce-00459b13bb90" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_a1d92b4f-1788-42a3-8daf-7dc71ca2ff19" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityTaxIdentificationNumber_a1d92b4f-1788-42a3-8daf-7dc71ca2ff19" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_4ee6332a-a33a-43f4-a38e-1d951252d386" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityAddressAddressLine1_4ee6332a-a33a-43f4-a38e-1d951252d386" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_b2598505-686a-4251-b215-905e8e6408c5" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityAddressCityOrTown_b2598505-686a-4251-b215-905e8e6408c5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_ed4a2ca2-4135-4b77-be19-eb07d09f0c04" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityAddressStateOrProvince_ed4a2ca2-4135-4b77-be19-eb07d09f0c04" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_338c05ee-4cc2-42fa-896f-d25aa506a720" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityAddressPostalZipCode_338c05ee-4cc2-42fa-896f-d25aa506a720" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_27916cfc-0962-4487-80b7-8cd64ade967b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_CityAreaCode_27916cfc-0962-4487-80b7-8cd64ade967b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_f03ddc3d-f93b-46aa-a533-4efd2900e382" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_LocalPhoneNumber_f03ddc3d-f93b-46aa-a533-4efd2900e382" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_448f533c-7f74-4b04-a09b-0524b681d8f8" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_Security12bTitle_448f533c-7f74-4b04-a09b-0524b681d8f8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_e87b1a75-0a0e-44ea-be83-8d08e09db260" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_TradingSymbol_e87b1a75-0a0e-44ea-be83-8d08e09db260" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_49500179-a896-4c37-b107-176bfcd94e94" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_SecurityExchangeName_49500179-a896-4c37-b107-176bfcd94e94" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityWellKnownSeasonedIssuer_0ee9ac67-5ee7-4b73-b164-b15df4e16ff6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityWellKnownSeasonedIssuer"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityWellKnownSeasonedIssuer_0ee9ac67-5ee7-4b73-b164-b15df4e16ff6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityVoluntaryFilers_3c2f9f13-fde3-445e-b244-2efe12e53cf9" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityVoluntaryFilers"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityVoluntaryFilers_3c2f9f13-fde3-445e-b244-2efe12e53cf9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus_08111009-d8e2-4ddc-a8d8-73ba0b415851" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCurrentReportingStatus"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityCurrentReportingStatus_08111009-d8e2-4ddc-a8d8-73ba0b415851" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent_ed1231d0-f772-4b84-963c-59200290921a" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityInteractiveDataCurrent"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityInteractiveDataCurrent_ed1231d0-f772-4b84-963c-59200290921a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory_f04de6ce-19d7-4618-8b8c-dbd23a639292" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFilerCategory"/>
    <link:presentationArc order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityFilerCategory_f04de6ce-19d7-4618-8b8c-dbd23a639292" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness_030e33e2-c064-47b0-8e34-265eb91b3dd9" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntitySmallBusiness"/>
    <link:presentationArc order="24" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntitySmallBusiness_030e33e2-c064-47b0-8e34-265eb91b3dd9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_73b11510-e911-4616-b7c6-745587fc696b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="25" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityEmergingGrowthCompany_73b11510-e911-4616-b7c6-745587fc696b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_IcfrAuditorAttestationFlag_a5be8b0a-0735-4233-a102-3fccd6d049d2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_IcfrAuditorAttestationFlag"/>
    <link:presentationArc order="26" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_IcfrAuditorAttestationFlag_a5be8b0a-0735-4233-a102-3fccd6d049d2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFinStmtErrorCorrectionFlag_448ce707-702d-4999-9f87-fd9e4dcd42b3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFinStmtErrorCorrectionFlag"/>
    <link:presentationArc order="27" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_DocumentFinStmtErrorCorrectionFlag_448ce707-702d-4999-9f87-fd9e4dcd42b3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany_06312da2-a7e3-4171-9ce0-7d3250f4479c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityShellCompany"/>
    <link:presentationArc order="28" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityShellCompany_06312da2-a7e3-4171-9ce0-7d3250f4479c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityPublicFloat_dc74bb15-1949-4b41-89c6-95d9a89072c5" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityPublicFloat"/>
    <link:presentationArc order="29" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityPublicFloat_dc74bb15-1949-4b41-89c6-95d9a89072c5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_806298ff-bd7a-425e-8fba-5526f5307070" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCommonStockSharesOutstanding"/>
    <link:presentationArc order="30" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_806298ff-bd7a-425e-8fba-5526f5307070" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentsIncorporatedByReferenceTextBlock_b7386315-2667-4a26-82f0-8d9b2ec88253" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentsIncorporatedByReferenceTextBlock"/>
    <link:presentationArc order="31" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_DocumentsIncorporatedByReferenceTextBlock_b7386315-2667-4a26-82f0-8d9b2ec88253" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_02bbe30f-1068-478f-a3c2-63c151fdd035" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="32" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_AmendmentFlag_02bbe30f-1068-478f-a3c2-63c151fdd035" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus_d03b6069-cbc5-4b3b-9d79-a050993e9784" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFiscalYearFocus"/>
    <link:presentationArc order="33" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_DocumentFiscalYearFocus_d03b6069-cbc5-4b3b-9d79-a050993e9784" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus_04e84c38-e9b6-440d-b2a8-69d7f0dfb588" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFiscalPeriodFocus"/>
    <link:presentationArc order="34" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_DocumentFiscalPeriodFocus_04e84c38-e9b6-440d-b2a8-69d7f0dfb588" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_e2cb6264-7fce-4193-b73c-1980b82b4272" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="35" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_1a1729f1-d0fd-4149-82c7-0851cdefda84" xlink:to="loc_dei_EntityCentralIndexKey_e2cb6264-7fce-4193-b73c-1980b82b4272" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/AuditInformation" xlink:type="simple" xlink:href="bwxt-20251231.xsd#AuditInformation"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/AuditInformation" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_AuditInformationAbstract_03a93af5-f4dc-44d3-8690-e60559a5b087" xlink:href="bwxt-20251231.xsd#bwxt_AuditInformationAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AuditorName_08c9cf70-03a3-43c6-b46b-4716b278831b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AuditorName"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_AuditInformationAbstract_03a93af5-f4dc-44d3-8690-e60559a5b087" xlink:to="loc_dei_AuditorName_08c9cf70-03a3-43c6-b46b-4716b278831b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AuditorLocation_9808bec8-9148-47a8-bb00-69f16b63ba2c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AuditorLocation"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_AuditInformationAbstract_03a93af5-f4dc-44d3-8690-e60559a5b087" xlink:to="loc_dei_AuditorLocation_9808bec8-9148-47a8-bb00-69f16b63ba2c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AuditorFirmId_692f4d6b-3033-4f2f-9f4a-add9aac4ab3e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AuditorFirmId"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_AuditInformationAbstract_03a93af5-f4dc-44d3-8690-e60559a5b087" xlink:to="loc_dei_AuditorFirmId_692f4d6b-3033-4f2f-9f4a-add9aac4ab3e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/ConsolidatedStatementsofIncome" xlink:type="simple" xlink:href="bwxt-20251231.xsd#ConsolidatedStatementsofIncome"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/ConsolidatedStatementsofIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementAbstract_6ea3cedc-1a6b-490d-b11d-092ed0465b56" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeStatementAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_fff832f2-64e9-4215-acfb-2b0b53885d03" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_6ea3cedc-1a6b-490d-b11d-092ed0465b56" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_fff832f2-64e9-4215-acfb-2b0b53885d03" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpensesAbstract_65a43eca-b5be-4bf0-8bce-a9944660e9e3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostsAndExpensesAbstract"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_6ea3cedc-1a6b-490d-b11d-092ed0465b56" xlink:to="loc_us-gaap_CostsAndExpensesAbstract_65a43eca-b5be-4bf0-8bce-a9944660e9e3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_61a54f5b-7f90-4356-96e5-9fc4e2e5c003" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfRevenue"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_65a43eca-b5be-4bf0-8bce-a9944660e9e3" xlink:to="loc_us-gaap_CostOfRevenue_61a54f5b-7f90-4356-96e5-9fc4e2e5c003" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_a32ef0c9-a3fe-4f96-ae6e-6d28ac367be7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_65a43eca-b5be-4bf0-8bce-a9944660e9e3" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_a32ef0c9-a3fe-4f96-ae6e-6d28ac367be7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_48451091-b1d5-4294-a95f-a2abeb263215" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_65a43eca-b5be-4bf0-8bce-a9944660e9e3" xlink:to="loc_us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_48451091-b1d5-4294-a95f-a2abeb263215" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_d4e7d7ce-2d63-4617-80e7-6125bcc74541" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_65a43eca-b5be-4bf0-8bce-a9944660e9e3" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_d4e7d7ce-2d63-4617-80e7-6125bcc74541" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_fb75613a-137f-4fad-ab8c-3c2a47a91440" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostsAndExpenses"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_65a43eca-b5be-4bf0-8bce-a9944660e9e3" xlink:to="loc_us-gaap_CostsAndExpenses_fb75613a-137f-4fad-ab8c-3c2a47a91440" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_1f5802b2-1ca9-4a86-b824-3fedbd43a972" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_6ea3cedc-1a6b-490d-b11d-092ed0465b56" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_1f5802b2-1ca9-4a86-b824-3fedbd43a972" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_aefc370a-a464-4b4c-841c-2b7f3c14c74b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_6ea3cedc-1a6b-490d-b11d-092ed0465b56" xlink:to="loc_us-gaap_OperatingIncomeLoss_aefc370a-a464-4b4c-841c-2b7f3c14c74b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_070f0c83-601b-4b5e-87fb-47a232f9643f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpenseAbstract"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_6ea3cedc-1a6b-490d-b11d-092ed0465b56" xlink:to="loc_us-gaap_NonoperatingIncomeExpenseAbstract_070f0c83-601b-4b5e-87fb-47a232f9643f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInterest_3e8daff5-4259-489b-b9a0-a1ec38f01bdc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentIncomeInterest"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_070f0c83-601b-4b5e-87fb-47a232f9643f" xlink:to="loc_us-gaap_InvestmentIncomeInterest_3e8daff5-4259-489b-b9a0-a1ec38f01bdc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_34ce5bf7-b137-4dc6-a935-a3e53755c835" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_070f0c83-601b-4b5e-87fb-47a232f9643f" xlink:to="loc_us-gaap_InterestExpenseNonoperating_34ce5bf7-b137-4dc6-a935-a3e53755c835" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_9c8a8abf-d2fa-4f7c-80b2-19359e95a747" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_070f0c83-601b-4b5e-87fb-47a232f9643f" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_9c8a8abf-d2fa-4f7c-80b2-19359e95a747" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_523cf6e5-3cc8-483d-bde6-8c4991324f98" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_070f0c83-601b-4b5e-87fb-47a232f9643f" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_523cf6e5-3cc8-483d-bde6-8c4991324f98" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_7776c501-9a0a-4853-8c9f-4664edf8c358" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_6ea3cedc-1a6b-490d-b11d-092ed0465b56" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_7776c501-9a0a-4853-8c9f-4664edf8c358" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_c1225529-b844-489b-8bae-f9596ca6d14e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_6ea3cedc-1a6b-490d-b11d-092ed0465b56" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_c1225529-b844-489b-8bae-f9596ca6d14e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_76c46ba2-79a7-49d3-a0c7-136785fe51f3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfitLoss"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_6ea3cedc-1a6b-490d-b11d-092ed0465b56" xlink:to="loc_us-gaap_ProfitLoss_76c46ba2-79a7-49d3-a0c7-136785fe51f3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_012d1907-cbcc-4261-b7bc-287d7b328177" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_6ea3cedc-1a6b-490d-b11d-092ed0465b56" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_012d1907-cbcc-4261-b7bc-287d7b328177" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_2fc4f6a4-4b00-4ef6-9d4c-19d0a08fdf9c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_6ea3cedc-1a6b-490d-b11d-092ed0465b56" xlink:to="loc_us-gaap_NetIncomeLoss_2fc4f6a4-4b00-4ef6-9d4c-19d0a08fdf9c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_7fadccde-7c47-4d02-8cc7-8b3ed4dc3cb0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareAbstract"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_6ea3cedc-1a6b-490d-b11d-092ed0465b56" xlink:to="loc_us-gaap_EarningsPerShareAbstract_7fadccde-7c47-4d02-8cc7-8b3ed4dc3cb0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicAbstract_3b4d589f-542b-4579-b4d7-308f1a6a7003" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareBasicAbstract"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_7fadccde-7c47-4d02-8cc7-8b3ed4dc3cb0" xlink:to="loc_us-gaap_EarningsPerShareBasicAbstract_3b4d589f-542b-4579-b4d7-308f1a6a7003" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_16afd9f1-cf28-4cb8-b7f7-08d060d1624f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_3b4d589f-542b-4579-b4d7-308f1a6a7003" xlink:to="loc_us-gaap_EarningsPerShareBasic_16afd9f1-cf28-4cb8-b7f7-08d060d1624f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDilutedAbstract_76bf06a3-fe9a-4f8e-a303-3198c502ef50" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareDilutedAbstract"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_7fadccde-7c47-4d02-8cc7-8b3ed4dc3cb0" xlink:to="loc_us-gaap_EarningsPerShareDilutedAbstract_76bf06a3-fe9a-4f8e-a303-3198c502ef50" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_40f1e932-8858-4d21-9b59-8f99d1d5c868" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_76bf06a3-fe9a-4f8e-a303-3198c502ef50" xlink:to="loc_us-gaap_EarningsPerShareDiluted_40f1e932-8858-4d21-9b59-8f99d1d5c868" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_529c3e0c-d233-4197-8568-a09864556938" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_6ea3cedc-1a6b-490d-b11d-092ed0465b56" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_529c3e0c-d233-4197-8568-a09864556938" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_4fec3f69-4b0e-4ee4-a06b-6b0faca03ee8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_529c3e0c-d233-4197-8568-a09864556938" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_4fec3f69-4b0e-4ee4-a06b-6b0faca03ee8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_346a7843-f751-4bd7-b094-ccd2beba07d9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_529c3e0c-d233-4197-8568-a09864556938" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_346a7843-f751-4bd7-b094-ccd2beba07d9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/ConsolidatedStatementsofComprehensiveIncome" xlink:type="simple" xlink:href="bwxt-20251231.xsd#ConsolidatedStatementsofComprehensiveIncome"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/ConsolidatedStatementsofComprehensiveIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_aaa5711d-e8d2-411c-ac84-15e4b438b2f6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_eae66377-c9f9-49d9-85d5-2ee0002bf7d5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfitLoss"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_aaa5711d-e8d2-411c-ac84-15e4b438b2f6" xlink:to="loc_us-gaap_ProfitLoss_eae66377-c9f9-49d9-85d5-2ee0002bf7d5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_e5c7d3f3-8f89-47b5-bd24-9ddee4f337d6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_aaa5711d-e8d2-411c-ac84-15e4b438b2f6" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_e5c7d3f3-8f89-47b5-bd24-9ddee4f337d6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_4d308f4a-f66a-4048-bc6b-4ffb75301b62" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_e5c7d3f3-8f89-47b5-bd24-9ddee4f337d6" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_4d308f4a-f66a-4048-bc6b-4ffb75301b62" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseAbstract_a3f820d5-7129-4bd2-83c9-4004db9eeec3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseAbstract"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_e5c7d3f3-8f89-47b5-bd24-9ddee4f337d6" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseAbstract_a3f820d5-7129-4bd2-83c9-4004db9eeec3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_4e4451d2-45a2-4975-aaae-9d15efb6f196" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseAbstract_a3f820d5-7129-4bd2-83c9-4004db9eeec3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_4e4451d2-45a2-4975-aaae-9d15efb6f196" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_670e3e8b-c678-43aa-87ae-59aabde4a36d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseAbstract_a3f820d5-7129-4bd2-83c9-4004db9eeec3" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_670e3e8b-c678-43aa-87ae-59aabde4a36d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract_a0fb6f28-f3a4-429a-b849-833c5ee91772" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_e5c7d3f3-8f89-47b5-bd24-9ddee4f337d6" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract_a0fb6f28-f3a4-429a-b849-833c5ee91772" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax_0d56e4c2-2db4-4716-995d-022a2a63af3a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract_a0fb6f28-f3a4-429a-b849-833c5ee91772" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax_0d56e4c2-2db4-4716-995d-022a2a63af3a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_OtherComprehensiveIncomeDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax_2fdcc3bc-0c26-4f52-ad1b-eb9a8129edcd" xlink:href="bwxt-20251231.xsd#bwxt_OtherComprehensiveIncomeDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract_a0fb6f28-f3a4-429a-b849-833c5ee91772" xlink:to="loc_bwxt_OtherComprehensiveIncomeDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax_2fdcc3bc-0c26-4f52-ad1b-eb9a8129edcd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesUnrealizedGainLossAbstract_d8a10876-ed16-4f42-9851-d6ed9ebbe026" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesUnrealizedGainLossAbstract"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_e5c7d3f3-8f89-47b5-bd24-9ddee4f337d6" xlink:to="loc_us-gaap_DebtSecuritiesUnrealizedGainLossAbstract_d8a10876-ed16-4f42-9851-d6ed9ebbe026" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_c38e3c02-0288-4ad9-b68f-6d8f3320d630" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtSecuritiesUnrealizedGainLossAbstract_d8a10876-ed16-4f42-9851-d6ed9ebbe026" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_c38e3c02-0288-4ad9-b68f-6d8f3320d630" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_019be102-b9ee-7942-9fc4-f9191d5b7719" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtSecuritiesUnrealizedGainLossAbstract_d8a10876-ed16-4f42-9851-d6ed9ebbe026" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_019be102-b9ee-7942-9fc4-f9191d5b7719" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_059eb360-c02c-4903-9ee7-0dcdc43a0547" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_e5c7d3f3-8f89-47b5-bd24-9ddee4f337d6" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_059eb360-c02c-4903-9ee7-0dcdc43a0547" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_51103f66-82b3-4123-a67e-db2e279b86c0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_aaa5711d-e8d2-411c-ac84-15e4b438b2f6" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_51103f66-82b3-4123-a67e-db2e279b86c0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_8208836a-f096-4408-81ae-7c1bfe82d96e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_aaa5711d-e8d2-411c-ac84-15e4b438b2f6" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_8208836a-f096-4408-81ae-7c1bfe82d96e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_bac51e8e-c1f8-4a06-bf98-ef639eb7f793" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_aaa5711d-e8d2-411c-ac84-15e4b438b2f6" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_bac51e8e-c1f8-4a06-bf98-ef639eb7f793" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/ConsolidatedStatementsofComprehensiveIncomeParenthetical" xlink:type="simple" xlink:href="bwxt-20251231.xsd#ConsolidatedStatementsofComprehensiveIncomeParenthetical"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/ConsolidatedStatementsofComprehensiveIncomeParenthetical" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_dc435aab-5123-42f5-9498-4f5965fa3afb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax_2ef3404e-6c17-4565-9dba-ca3a28bb1ed1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_dc435aab-5123-42f5-9498-4f5965fa3afb" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax_2ef3404e-6c17-4565-9dba-ca3a28bb1ed1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax_4fb30a7d-d001-4f09-a2bd-512139c61b9c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_dc435aab-5123-42f5-9498-4f5965fa3afb" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax_4fb30a7d-d001-4f09-a2bd-512139c61b9c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax_125bd353-043f-4945-8d91-5b1378675f25" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_dc435aab-5123-42f5-9498-4f5965fa3afb" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax_125bd353-043f-4945-8d91-5b1378675f25" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax_69f371df-e843-46bc-86fc-8677f03e39a4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_dc435aab-5123-42f5-9498-4f5965fa3afb" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax_69f371df-e843-46bc-86fc-8677f03e39a4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_c2f7b6ba-0b28-4c11-8e3f-5dbbe5a16f64" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_dc435aab-5123-42f5-9498-4f5965fa3afb" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_c2f7b6ba-0b28-4c11-8e3f-5dbbe5a16f64" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax_019be104-6341-7219-868c-152b9cfcaf37" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_dc435aab-5123-42f5-9498-4f5965fa3afb" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax_019be104-6341-7219-868c-152b9cfcaf37" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/ConsolidatedBalanceSheets" xlink:type="simple" xlink:href="bwxt-20251231.xsd#ConsolidatedBalanceSheets"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/ConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_1e3fb304-155d-4dff-b126-efda037da1e1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementOfFinancialPositionAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_2bfe1e84-5cca-47a4-8df7-0cd3c0f13ab7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsAbstract"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_1e3fb304-155d-4dff-b126-efda037da1e1" xlink:to="loc_us-gaap_AssetsAbstract_2bfe1e84-5cca-47a4-8df7-0cd3c0f13ab7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrentAbstract_99842788-b4a6-4ee9-877a-434fe7cb2943" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrentAbstract"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_2bfe1e84-5cca-47a4-8df7-0cd3c0f13ab7" xlink:to="loc_us-gaap_AssetsCurrentAbstract_99842788-b4a6-4ee9-877a-434fe7cb2943" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_f4bb000b-ebbb-46a5-baaf-9f6937757f1d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_99842788-b4a6-4ee9-877a-434fe7cb2943" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_f4bb000b-ebbb-46a5-baaf-9f6937757f1d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalents_c139a916-7180-4ba9-8175-aaf359e65d17" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashAndCashEquivalents"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_99842788-b4a6-4ee9-877a-434fe7cb2943" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalents_c139a916-7180-4ba9-8175-aaf359e65d17" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_b5a6fa77-3198-4b4f-9f8c-253cd13cb261" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_99842788-b4a6-4ee9-877a-434fe7cb2943" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_b5a6fa77-3198-4b4f-9f8c-253cd13cb261" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherReceivablesNetCurrent_e44e9039-fe29-4897-981b-2784794c93b1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherReceivablesNetCurrent"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_99842788-b4a6-4ee9-877a-434fe7cb2943" xlink:to="loc_us-gaap_OtherReceivablesNetCurrent_e44e9039-fe29-4897-981b-2784794c93b1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_AccountsReceivableRetainage_76e37b43-3f8d-40b7-8619-b3deb0bb7fa8" xlink:href="bwxt-20251231.xsd#bwxt_AccountsReceivableRetainage"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_99842788-b4a6-4ee9-877a-434fe7cb2943" xlink:to="loc_bwxt_AccountsReceivableRetainage_76e37b43-3f8d-40b7-8619-b3deb0bb7fa8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CostInExcessOfBillingsCurrent1_2a1f53b5-41f0-44a8-bd99-36770c67cd11" xlink:href="bwxt-20251231.xsd#bwxt_CostInExcessOfBillingsCurrent1"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_99842788-b4a6-4ee9-877a-434fe7cb2943" xlink:to="loc_bwxt_CostInExcessOfBillingsCurrent1_2a1f53b5-41f0-44a8-bd99-36770c67cd11" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019be6d9-1424-7c00-adab-94ccdbe5400b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryNet"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_99842788-b4a6-4ee9-877a-434fe7cb2943" xlink:to="loc_us-gaap_InventoryNet_019be6d9-1424-7c00-adab-94ccdbe5400b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_0ce4e88a-81b9-475e-926f-1bac54cdf545" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_99842788-b4a6-4ee9-877a-434fe7cb2943" xlink:to="loc_us-gaap_OtherAssetsCurrent_0ce4e88a-81b9-475e-926f-1bac54cdf545" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_31b297bd-8e43-4f41-ad27-ad6bcf4799a8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_99842788-b4a6-4ee9-877a-434fe7cb2943" xlink:to="loc_us-gaap_AssetsCurrent_31b297bd-8e43-4f41-ad27-ad6bcf4799a8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_48b2b408-39b3-490a-b76d-83452745c303" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_2bfe1e84-5cca-47a4-8df7-0cd3c0f13ab7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_48b2b408-39b3-490a-b76d-83452745c303" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_LongTermInvestmentsExcludingInvestmentsInUnconsolidatedAffiliates_902b6813-b12f-4492-8aa8-fcefc96f6ab2" xlink:href="bwxt-20251231.xsd#bwxt_LongTermInvestmentsExcludingInvestmentsInUnconsolidatedAffiliates"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_2bfe1e84-5cca-47a4-8df7-0cd3c0f13ab7" xlink:to="loc_bwxt_LongTermInvestmentsExcludingInvestmentsInUnconsolidatedAffiliates_902b6813-b12f-4492-8aa8-fcefc96f6ab2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_a45f31af-90cf-40ac-9d5b-dfc99dd83e93" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_2bfe1e84-5cca-47a4-8df7-0cd3c0f13ab7" xlink:to="loc_us-gaap_Goodwill_a45f31af-90cf-40ac-9d5b-dfc99dd83e93" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_47ee8336-0d91-4a75-80e0-b4fb3286c00a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_2bfe1e84-5cca-47a4-8df7-0cd3c0f13ab7" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_47ee8336-0d91-4a75-80e0-b4fb3286c00a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_dbe7b3f7-1888-408e-9071-4feefbe701ad" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestments"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_2bfe1e84-5cca-47a4-8df7-0cd3c0f13ab7" xlink:to="loc_us-gaap_EquityMethodInvestments_dbe7b3f7-1888-408e-9071-4feefbe701ad" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_72442ada-82e1-4100-81db-b680bb884340" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_2bfe1e84-5cca-47a4-8df7-0cd3c0f13ab7" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_72442ada-82e1-4100-81db-b680bb884340" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_c924593c-1b5a-47a9-9297-6c54a3e4019f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_2bfe1e84-5cca-47a4-8df7-0cd3c0f13ab7" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_c924593c-1b5a-47a9-9297-6c54a3e4019f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_cca94b86-cd6f-4485-b761-5f6ae78adc57" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_2bfe1e84-5cca-47a4-8df7-0cd3c0f13ab7" xlink:to="loc_us-gaap_Assets_cca94b86-cd6f-4485-b761-5f6ae78adc57" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_42868093-4ce9-4771-b317-18e7e7c5a311" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_1e3fb304-155d-4dff-b126-efda037da1e1" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_42868093-4ce9-4771-b317-18e7e7c5a311" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_93cf8b68-9c03-4851-ab71-db6814963253" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_42868093-4ce9-4771-b317-18e7e7c5a311" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_93cf8b68-9c03-4851-ab71-db6814963253" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_cc09cb54-9fd6-4a45-9287-3baa2f35f3bb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_93cf8b68-9c03-4851-ab71-db6814963253" xlink:to="loc_us-gaap_LongTermDebtCurrent_cc09cb54-9fd6-4a45-9287-3baa2f35f3bb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_5debfd18-079e-404a-9414-b9485fc195c9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_93cf8b68-9c03-4851-ab71-db6814963253" xlink:to="loc_us-gaap_AccountsPayableCurrent_5debfd18-079e-404a-9414-b9485fc195c9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_8bdad035-912b-45c4-9304-2ce46282a2d1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_93cf8b68-9c03-4851-ab71-db6814963253" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_8bdad035-912b-45c4-9304-2ce46282a2d1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_1eb79d45-057f-46fe-acca-85d309ecf82b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_93cf8b68-9c03-4851-ab71-db6814963253" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_1eb79d45-057f-46fe-acca-85d309ecf82b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_35ec1437-84b8-4dae-86b7-79407ce2820c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_93cf8b68-9c03-4851-ab71-db6814963253" xlink:to="loc_us-gaap_ContractWithCustomerLiability_35ec1437-84b8-4dae-86b7-79407ce2820c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_5c919f81-acf6-4577-8022-f95982d69249" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_93cf8b68-9c03-4851-ab71-db6814963253" xlink:to="loc_us-gaap_LiabilitiesCurrent_5c919f81-acf6-4577-8022-f95982d69249" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_021cdf10-8912-4fbf-a3db-8e2eeee6df60" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_42868093-4ce9-4771-b317-18e7e7c5a311" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_021cdf10-8912-4fbf-a3db-8e2eeee6df60" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent_bb8e6e3c-f170-46a3-a0f3-19fb287d2586" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_42868093-4ce9-4771-b317-18e7e7c5a311" xlink:to="loc_us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent_bb8e6e3c-f170-46a3-a0f3-19fb287d2586" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent_a5e524d0-4983-403f-951f-64a67be3a419" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_42868093-4ce9-4771-b317-18e7e7c5a311" xlink:to="loc_us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent_a5e524d0-4983-403f-951f-64a67be3a419" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent_9e75ce3d-39ec-42c3-8cb8-4d9bc1707ac8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_42868093-4ce9-4771-b317-18e7e7c5a311" xlink:to="loc_us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent_9e75ce3d-39ec-42c3-8cb8-4d9bc1707ac8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_58630e6a-075c-4808-90aa-ff3c386b8d73" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_42868093-4ce9-4771-b317-18e7e7c5a311" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_58630e6a-075c-4808-90aa-ff3c386b8d73" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019c34a6-705c-7cff-a5d9-6ed0db8aac21" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_42868093-4ce9-4771-b317-18e7e7c5a311" xlink:to="loc_us-gaap_Liabilities_019c34a6-705c-7cff-a5d9-6ed0db8aac21" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_5641ac1b-641d-45f4-b535-f4c05caaebbb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_42868093-4ce9-4771-b317-18e7e7c5a311" xlink:to="loc_us-gaap_CommitmentsAndContingencies_5641ac1b-641d-45f4-b535-f4c05caaebbb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_9168f131-2422-4727-b91f-9b451cd94687" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_42868093-4ce9-4771-b317-18e7e7c5a311" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_9168f131-2422-4727-b91f-9b451cd94687" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_33bd6c56-97da-4aa4-87fd-a1106f9b694c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockValue"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_9168f131-2422-4727-b91f-9b451cd94687" xlink:to="loc_us-gaap_CommonStockValue_33bd6c56-97da-4aa4-87fd-a1106f9b694c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_8238e322-dfbd-4278-91aa-f6f9fe028662" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockValue"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_9168f131-2422-4727-b91f-9b451cd94687" xlink:to="loc_us-gaap_PreferredStockValue_8238e322-dfbd-4278-91aa-f6f9fe028662" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_42387226-bd71-4dee-a0be-2c8af4f2cf50" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_9168f131-2422-4727-b91f-9b451cd94687" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_42387226-bd71-4dee-a0be-2c8af4f2cf50" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_615bbcca-6e32-4107-82cb-0226d9bf98a8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_9168f131-2422-4727-b91f-9b451cd94687" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_615bbcca-6e32-4107-82cb-0226d9bf98a8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonValue_5f16d438-c92b-4567-b93d-82f1cb8d474a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockCommonValue"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_9168f131-2422-4727-b91f-9b451cd94687" xlink:to="loc_us-gaap_TreasuryStockCommonValue_5f16d438-c92b-4567-b93d-82f1cb8d474a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_8f5d3562-ccc1-4225-aca7-ced76f16c8c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_9168f131-2422-4727-b91f-9b451cd94687" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_8f5d3562-ccc1-4225-aca7-ced76f16c8c7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_435a0c05-b225-42e7-b816-7456b4938ef0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_9168f131-2422-4727-b91f-9b451cd94687" xlink:to="loc_us-gaap_StockholdersEquity_435a0c05-b225-42e7-b816-7456b4938ef0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_4cbd7247-c6db-47a2-8bd3-303aebdb35b0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MinorityInterest"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_9168f131-2422-4727-b91f-9b451cd94687" xlink:to="loc_us-gaap_MinorityInterest_4cbd7247-c6db-47a2-8bd3-303aebdb35b0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_17331836-9685-4b90-ae19-48e70550c31f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_9168f131-2422-4727-b91f-9b451cd94687" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_17331836-9685-4b90-ae19-48e70550c31f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_3b857f4e-bc2e-4167-bc12-f74bc2f9e881" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_42868093-4ce9-4771-b317-18e7e7c5a311" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_3b857f4e-bc2e-4167-bc12-f74bc2f9e881" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="simple" xlink:href="bwxt-20251231.xsd#ConsolidatedBalanceSheetsParenthetical"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_f245d2b8-7913-4056-83bc-0355039d6bb5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementOfFinancialPositionAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_71859446-673a-410d-95ac-f2c801005880" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_f245d2b8-7913-4056-83bc-0355039d6bb5" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_71859446-673a-410d-95ac-f2c801005880" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_d7b15d2f-b2f9-48fc-a371-578bc23fe7a3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_f245d2b8-7913-4056-83bc-0355039d6bb5" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_d7b15d2f-b2f9-48fc-a371-578bc23fe7a3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_2e39ce1e-7cc3-4c55-ab1e-d679722d8f36" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_f245d2b8-7913-4056-83bc-0355039d6bb5" xlink:to="loc_us-gaap_CommonStockSharesIssued_2e39ce1e-7cc3-4c55-ab1e-d679722d8f36" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_a25131b1-121b-494d-bce6-5b2b4aee4a87" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockParOrStatedValuePerShare"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_f245d2b8-7913-4056-83bc-0355039d6bb5" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_a25131b1-121b-494d-bce6-5b2b4aee4a87" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_93c741d1-efa6-45d0-a5e9-ac2a89a27b2b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockSharesAuthorized"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_f245d2b8-7913-4056-83bc-0355039d6bb5" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_93c741d1-efa6-45d0-a5e9-ac2a89a27b2b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesIssued_ff24cd99-b727-43d4-8e7d-34bf7da9f95b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockSharesIssued"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_f245d2b8-7913-4056-83bc-0355039d6bb5" xlink:to="loc_us-gaap_PreferredStockSharesIssued_ff24cd99-b727-43d4-8e7d-34bf7da9f95b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_a3bd968a-17eb-428b-a2d9-6867706ecd9c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockCommonShares"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_f245d2b8-7913-4056-83bc-0355039d6bb5" xlink:to="loc_us-gaap_TreasuryStockCommonShares_a3bd968a-17eb-428b-a2d9-6867706ecd9c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/ConsolidatedStatementsofStockholdersEquity" xlink:type="simple" xlink:href="bwxt-20251231.xsd#ConsolidatedStatementsofStockholdersEquity"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/ConsolidatedStatementsofStockholdersEquity" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfStockholdersEquityAbstract_dcce0d1e-c18f-4981-85d4-e77e895a6a60" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementOfStockholdersEquityAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_c09fb401-42e7-4378-ad83-22865835646c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfStockholdersEquityAbstract_dcce0d1e-c18f-4981-85d4-e77e895a6a60" xlink:to="loc_us-gaap_StatementTable_c09fb401-42e7-4378-ad83-22865835646c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_bf85c552-1f5a-413c-9c5e-e967e4e9db87" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_c09fb401-42e7-4378-ad83-22865835646c" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_bf85c552-1f5a-413c-9c5e-e967e4e9db87" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_1cab082e-feea-418f-8856-bd7099aa5d29" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_bf85c552-1f5a-413c-9c5e-e967e4e9db87" xlink:to="loc_us-gaap_EquityComponentDomain_1cab082e-feea-418f-8856-bd7099aa5d29" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParentMember_41715b17-2506-4712-9a55-b37b1076def3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ParentMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_1cab082e-feea-418f-8856-bd7099aa5d29" xlink:to="loc_us-gaap_ParentMember_41715b17-2506-4712-9a55-b37b1076def3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_256725da-c254-48b7-8197-792542099d3a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ParentMember_41715b17-2506-4712-9a55-b37b1076def3" xlink:to="loc_us-gaap_CommonStockMember_256725da-c254-48b7-8197-792542099d3a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_f7cae84f-1ccc-468f-bbd1-abb3d15b0dc5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ParentMember_41715b17-2506-4712-9a55-b37b1076def3" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_f7cae84f-1ccc-468f-bbd1-abb3d15b0dc5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_f40f940e-c458-44f9-a4e6-a87162372d81" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ParentMember_41715b17-2506-4712-9a55-b37b1076def3" xlink:to="loc_us-gaap_RetainedEarningsMember_f40f940e-c458-44f9-a4e6-a87162372d81" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_b35dc2ae-0772-417e-9551-52cd618b8d6b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ParentMember_41715b17-2506-4712-9a55-b37b1076def3" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_b35dc2ae-0772-417e-9551-52cd618b8d6b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_b6dd8eab-c40c-4daf-8c1a-6526a71bb028" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ParentMember_41715b17-2506-4712-9a55-b37b1076def3" xlink:to="loc_us-gaap_TreasuryStockCommonMember_b6dd8eab-c40c-4daf-8c1a-6526a71bb028" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_bebec248-afb6-438a-979f-aa9feac8d773" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_1cab082e-feea-418f-8856-bd7099aa5d29" xlink:to="loc_us-gaap_NoncontrollingInterestMember_bebec248-afb6-438a-979f-aa9feac8d773" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_ae81d6a6-2fe8-4964-8825-8b253ef45bc1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_c09fb401-42e7-4378-ad83-22865835646c" xlink:to="loc_us-gaap_StatementLineItems_ae81d6a6-2fe8-4964-8825-8b253ef45bc1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_ae81d6a6-2fe8-4964-8825-8b253ef45bc1" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_cc1f69d7-500c-46b4-a862-61769543f1a0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:to="loc_us-gaap_CommonStockSharesIssued_cc1f69d7-500c-46b4-a862-61769543f1a0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_3bfef1f5-0256-48c5-8a3b-97bd3df5cf6f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_3bfef1f5-0256-48c5-8a3b-97bd3df5cf6f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_05cb4516-4b1e-4a37-9555-3394a6908567" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfitLoss"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:to="loc_us-gaap_ProfitLoss_05cb4516-4b1e-4a37-9555-3394a6908567" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Dividends_6924af3c-384f-4253-bb37-6cd778290d7f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Dividends"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:to="loc_us-gaap_Dividends_6924af3c-384f-4253-bb37-6cd778290d7f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_ed7e1b77-3a58-4f71-a624-740067ae4d4e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_ed7e1b77-3a58-4f71-a624-740067ae4d4e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_a0212a2d-7cd6-434d-b20c-5ebbb3723983" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_a0212a2d-7cd6-434d-b20c-5ebbb3723983" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_71b7b644-19c2-4e0e-91ec-15661527ab5e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_71b7b644-19c2-4e0e-91ec-15661527ab5e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_7f28fe1b-b9fa-4509-ad95-f7bee28634f1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_7f28fe1b-b9fa-4509-ad95-f7bee28634f1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_356d299e-70ab-43d4-bf65-e5b0328e51fb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_356d299e-70ab-43d4-bf65-e5b0328e51fb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_a0536881-4ba9-4c21-ae93-0bc186030b2f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_a0536881-4ba9-4c21-ae93-0bc186030b2f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_8f090262-1a02-4b01-8811-e9f687686f86" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_8f090262-1a02-4b01-8811-e9f687686f86" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_be0f7e12-07fe-4738-99a1-7d67709dfcee" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_be0f7e12-07fe-4738-99a1-7d67709dfcee" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockGrantedDuringPeriodValueSharebasedCompensation_2f69f585-d624-4292-81b4-2041333153d2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockGrantedDuringPeriodValueSharebasedCompensation"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:to="loc_us-gaap_StockGrantedDuringPeriodValueSharebasedCompensation_2f69f585-d624-4292-81b4-2041333153d2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_acff9bfd-b1c2-47ac-b6be-5cf13ac5d323" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_acff9bfd-b1c2-47ac-b6be-5cf13ac5d323" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCallsRelatedToConvertibleDebt_019c71c4-2b62-7b27-9a5e-d7d80760ed04" xlink:href="bwxt-20251231.xsd#bwxt_AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCallsRelatedToConvertibleDebt"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:to="loc_bwxt_AdjustmentsToAdditionalPaidInCapitalPurchaseOfCappedCallsRelatedToConvertibleDebt_019c71c4-2b62-7b27-9a5e-d7d80760ed04" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_16caf863-4b13-46e4-afea-2c9589065744" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:to="loc_us-gaap_CommonStockSharesIssued_16caf863-4b13-46e4-afea-2c9589065744" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_dcd198c1-c8b3-438b-939c-d1c2d37af1fa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_0a1ece40-b555-4805-88c1-b4c11d876e76" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_dcd198c1-c8b3-438b-939c-d1c2d37af1fa" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/ConsolidatedStatementsofStockholdersEquityParenthetical" xlink:type="simple" xlink:href="bwxt-20251231.xsd#ConsolidatedStatementsofStockholdersEquityParenthetical"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/ConsolidatedStatementsofStockholdersEquityParenthetical" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfStockholdersEquityAbstract_7703a2f9-974c-4b28-8b27-f535a6a441b4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementOfStockholdersEquityAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_21ac5f97-4f91-4a84-8106-86f6d301132d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfStockholdersEquityAbstract_7703a2f9-974c-4b28-8b27-f535a6a441b4" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_21ac5f97-4f91-4a84-8106-86f6d301132d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/ConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="bwxt-20251231.xsd#ConsolidatedStatementsofCashFlows"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/ConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_c7b2f450-836a-403f-b917-3acbcd0a8971" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementOfCashFlowsAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_d22c325e-341c-486a-a4ae-e15eb41b4f66" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_c7b2f450-836a-403f-b917-3acbcd0a8971" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_d22c325e-341c-486a-a4ae-e15eb41b4f66" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_f7422e2b-e94b-42fc-b6c4-2b3ef6b3a5b2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfitLoss"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_d22c325e-341c-486a-a4ae-e15eb41b4f66" xlink:to="loc_us-gaap_ProfitLoss_f7422e2b-e94b-42fc-b6c4-2b3ef6b3a5b2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_66f26419-541c-47ae-add7-cc053de8f089" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_d22c325e-341c-486a-a4ae-e15eb41b4f66" xlink:to="loc_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_66f26419-541c-47ae-add7-cc053de8f089" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_694fe9fd-b416-447f-bd28-66a415e803a4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_66f26419-541c-47ae-add7-cc053de8f089" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_694fe9fd-b416-447f-bd28-66a415e803a4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_1e7ad50b-d322-405c-bb78-00164306187b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_66f26419-541c-47ae-add7-cc053de8f089" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_1e7ad50b-d322-405c-bb78-00164306187b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_793262fa-d717-44cd-bd91-e2945b8c2af3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_66f26419-541c-47ae-add7-cc053de8f089" xlink:to="loc_us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_793262fa-d717-44cd-bd91-e2945b8c2af3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_01ac0982-84d5-4b07-b5e1-cf8111f95c0a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_66f26419-541c-47ae-add7-cc053de8f089" xlink:to="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_01ac0982-84d5-4b07-b5e1-cf8111f95c0a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_RecognitionOfGainsLossesForPensionAndPostretirementPlans_822c3b42-0dd5-4e85-ba43-ba05961cf52b" xlink:href="bwxt-20251231.xsd#bwxt_RecognitionOfGainsLossesForPensionAndPostretirementPlans"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_66f26419-541c-47ae-add7-cc053de8f089" xlink:to="loc_bwxt_RecognitionOfGainsLossesForPensionAndPostretirementPlans_822c3b42-0dd5-4e85-ba43-ba05961cf52b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_227a7a16-3b98-4ddb-b65d-242b623a53fe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensation"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_66f26419-541c-47ae-add7-cc053de8f089" xlink:to="loc_us-gaap_ShareBasedCompensation_227a7a16-3b98-4ddb-b65d-242b623a53fe" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_84862ac2-ca3e-446a-ac92-f4513d3ed3de" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherOperatingActivitiesCashFlowStatement"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_66f26419-541c-47ae-add7-cc053de8f089" xlink:to="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_84862ac2-ca3e-446a-ac92-f4513d3ed3de" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a1c3b99-a368-4f35-a2eb-c3f754014f7a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_66f26419-541c-47ae-add7-cc053de8f089" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a1c3b99-a368-4f35-a2eb-c3f754014f7a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables_cb6ef088-0a81-4b80-958a-d656acaf7555" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a1c3b99-a368-4f35-a2eb-c3f754014f7a" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables_cb6ef088-0a81-4b80-958a-d656acaf7555" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_6b56995a-eba3-4906-992c-94d905ae562c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a1c3b99-a368-4f35-a2eb-c3f754014f7a" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_6b56995a-eba3-4906-992c-94d905ae562c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDepositOtherAssets_42fb3c93-8827-4e1e-bd16-bc4440bc94ca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInDepositOtherAssets"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a1c3b99-a368-4f35-a2eb-c3f754014f7a" xlink:to="loc_us-gaap_IncreaseDecreaseInDepositOtherAssets_42fb3c93-8827-4e1e-bd16-bc4440bc94ca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_IncreaseDecreaseContractsInProgressAndAdvanceBillingsOnContracts_6ec8cc3e-cc80-4501-8605-90be79c26368" xlink:href="bwxt-20251231.xsd#bwxt_IncreaseDecreaseContractsInProgressAndAdvanceBillingsOnContracts"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a1c3b99-a368-4f35-a2eb-c3f754014f7a" xlink:to="loc_bwxt_IncreaseDecreaseContractsInProgressAndAdvanceBillingsOnContracts_6ec8cc3e-cc80-4501-8605-90be79c26368" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInIncomeTaxes_52091eb7-b9d4-4991-9ebc-1e90f3459d78" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInIncomeTaxes"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a1c3b99-a368-4f35-a2eb-c3f754014f7a" xlink:to="loc_us-gaap_IncreaseDecreaseInIncomeTaxes_52091eb7-b9d4-4991-9ebc-1e90f3459d78" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherAccruedLiabilities_b1f692ec-5920-442f-8a90-2dc30125197d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherAccruedLiabilities"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a1c3b99-a368-4f35-a2eb-c3f754014f7a" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherAccruedLiabilities_b1f692ec-5920-442f-8a90-2dc30125197d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_IncreaseDecreaseInPensionPostretirementAndAccruedEmployeeBenefits_26b72ffd-fd00-4714-8ed9-fced0e306e81" xlink:href="bwxt-20251231.xsd#bwxt_IncreaseDecreaseInPensionPostretirementAndAccruedEmployeeBenefits"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a1c3b99-a368-4f35-a2eb-c3f754014f7a" xlink:to="loc_bwxt_IncreaseDecreaseInPensionPostretirementAndAccruedEmployeeBenefits_26b72ffd-fd00-4714-8ed9-fced0e306e81" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_fd67fa00-cb04-44aa-94aa-6cae95634895" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a1c3b99-a368-4f35-a2eb-c3f754014f7a" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_fd67fa00-cb04-44aa-94aa-6cae95634895" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_341257ee-1998-4a9c-85a2-aede09a597ee" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_d22c325e-341c-486a-a4ae-e15eb41b4f66" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_341257ee-1998-4a9c-85a2-aede09a597ee" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_16a0c3e7-9fe5-4cc1-ac1f-807c20cbe53d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_c7b2f450-836a-403f-b917-3acbcd0a8971" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_16a0c3e7-9fe5-4cc1-ac1f-807c20cbe53d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_8b3c721b-3503-44f0-8790-b7558ec88b17" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_16a0c3e7-9fe5-4cc1-ac1f-807c20cbe53d" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_8b3c721b-3503-44f0-8790-b7558ec88b17" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_17818543-afd5-43d9-a4e6-89876fe1f6da" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_16a0c3e7-9fe5-4cc1-ac1f-807c20cbe53d" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_17818543-afd5-43d9-a4e6-89876fe1f6da" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireInvestments_4a0ecd86-f2de-42a0-9916-f51e926784ab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireInvestments"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_16a0c3e7-9fe5-4cc1-ac1f-807c20cbe53d" xlink:to="loc_us-gaap_PaymentsToAcquireInvestments_4a0ecd86-f2de-42a0-9916-f51e926784ab" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_8a13ca5d-9829-40ce-91e4-4c0183836563" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_16a0c3e7-9fe5-4cc1-ac1f-807c20cbe53d" xlink:to="loc_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_8a13ca5d-9829-40ce-91e4-4c0183836563" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_PaymentsToProceedsFromEquityMethodInvestmentsNetOfReturnOfCapital_a1099315-3338-4c81-87a5-f40a612f3968" xlink:href="bwxt-20251231.xsd#bwxt_PaymentsToProceedsFromEquityMethodInvestmentsNetOfReturnOfCapital"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_16a0c3e7-9fe5-4cc1-ac1f-807c20cbe53d" xlink:to="loc_bwxt_PaymentsToProceedsFromEquityMethodInvestmentsNetOfReturnOfCapital_a1099315-3338-4c81-87a5-f40a612f3968" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_f9793688-b66d-4a26-81d3-4a1e4d5b8509" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_16a0c3e7-9fe5-4cc1-ac1f-807c20cbe53d" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_f9793688-b66d-4a26-81d3-4a1e4d5b8509" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_9b56fde0-5b65-49f5-9a3e-71cb5c1cf645" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_16a0c3e7-9fe5-4cc1-ac1f-807c20cbe53d" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_9b56fde0-5b65-49f5-9a3e-71cb5c1cf645" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_c9aee76c-bbc9-456c-aac6-fddf740a6142" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_c7b2f450-836a-403f-b917-3acbcd0a8971" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_c9aee76c-bbc9-456c-aac6-fddf740a6142" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebt_019be10d-afee-7a56-90ba-c10cd1dc12da" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfDebt"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_c9aee76c-bbc9-456c-aac6-fddf740a6142" xlink:to="loc_us-gaap_RepaymentsOfDebt_019be10d-afee-7a56-90ba-c10cd1dc12da" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromConvertibleDebt_019be10e-a1f7-70da-b942-f820e92933f1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromConvertibleDebt"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_c9aee76c-bbc9-456c-aac6-fddf740a6142" xlink:to="loc_us-gaap_ProceedsFromConvertibleDebt_019be10e-a1f7-70da-b942-f820e92933f1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt_e2374218-b396-44e7-a1f4-bba1e62ecd67" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_c9aee76c-bbc9-456c-aac6-fddf740a6142" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt_e2374218-b396-44e7-a1f4-bba1e62ecd67" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_2bda1f4a-95be-40e0-9a0c-3b6a70922194" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_c9aee76c-bbc9-456c-aac6-fddf740a6142" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_2bda1f4a-95be-40e0-9a0c-3b6a70922194" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_dfae94d7-3ee3-40d0-9695-01899e500674" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_c9aee76c-bbc9-456c-aac6-fddf740a6142" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_dfae94d7-3ee3-40d0-9695-01899e500674" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_PaymentForPurchaseOfCappedCalls_019be110-f25d-7807-916d-af2352503f6d" xlink:href="bwxt-20251231.xsd#bwxt_PaymentForPurchaseOfCappedCalls"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_c9aee76c-bbc9-456c-aac6-fddf740a6142" xlink:to="loc_bwxt_PaymentForPurchaseOfCappedCalls_019be110-f25d-7807-916d-af2352503f6d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_c3489177-b263-4d51-b2f2-040607e2ba86" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_c9aee76c-bbc9-456c-aac6-fddf740a6142" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_c3489177-b263-4d51-b2f2-040607e2ba86" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_f70060d5-b2aa-4e39-9f12-cd3e381c87da" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfDividendsCommonStock"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_c9aee76c-bbc9-456c-aac6-fddf740a6142" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_f70060d5-b2aa-4e39-9f12-cd3e381c87da" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_2cf9b8a9-548c-48d3-ae5e-ed961288524b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_c9aee76c-bbc9-456c-aac6-fddf740a6142" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_2cf9b8a9-548c-48d3-ae5e-ed961288524b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromDerivativeInstrumentFinancingActivities_8d2bf551-3440-448c-bd0c-413cb188a86f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForProceedsFromDerivativeInstrumentFinancingActivities"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_c9aee76c-bbc9-456c-aac6-fddf740a6142" xlink:to="loc_us-gaap_PaymentsForProceedsFromDerivativeInstrumentFinancingActivities_8d2bf551-3440-448c-bd0c-413cb188a86f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_f3955b5d-55f2-48ab-806c-986044b87b33" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_c9aee76c-bbc9-456c-aac6-fddf740a6142" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_f3955b5d-55f2-48ab-806c-986044b87b33" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_6700f6f7-41e0-4aff-a971-04310f14ae95" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_c9aee76c-bbc9-456c-aac6-fddf740a6142" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_6700f6f7-41e0-4aff-a971-04310f14ae95" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_957ac00a-152c-4d20-a87a-d6b8bc4755b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_c7b2f450-836a-403f-b917-3acbcd0a8971" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_957ac00a-152c-4d20-a87a-d6b8bc4755b3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_0a98c981-8666-4595-a6dc-34130cb824bd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_c7b2f450-836a-403f-b917-3acbcd0a8971" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_0a98c981-8666-4595-a6dc-34130cb824bd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_f859cb94-f024-4b6a-972e-439c9c2cbd7c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_c7b2f450-836a-403f-b917-3acbcd0a8971" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_f859cb94-f024-4b6a-972e-439c9c2cbd7c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_acb0cfd3-0e4e-404b-a02f-ce236bb2fb68" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_c7b2f450-836a-403f-b917-3acbcd0a8971" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_acb0cfd3-0e4e-404b-a02f-ce236bb2fb68" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract_ba5cfc9a-775c-4e53-92ce-3949aad47a54" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SupplementalCashFlowInformationAbstract"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_c7b2f450-836a-403f-b917-3acbcd0a8971" xlink:to="loc_us-gaap_SupplementalCashFlowInformationAbstract_ba5cfc9a-775c-4e53-92ce-3949aad47a54" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CashPaidDuringPeriodForAbstract_e65214af-1982-4fb8-8e7f-dcdfd316bbcf" xlink:href="bwxt-20251231.xsd#bwxt_CashPaidDuringPeriodForAbstract"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_ba5cfc9a-775c-4e53-92ce-3949aad47a54" xlink:to="loc_bwxt_CashPaidDuringPeriodForAbstract_e65214af-1982-4fb8-8e7f-dcdfd316bbcf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPaidNet_eae9d193-d4ee-44f6-975d-4b62dd2bfc82" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestPaidNet"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_CashPaidDuringPeriodForAbstract_e65214af-1982-4fb8-8e7f-dcdfd316bbcf" xlink:to="loc_us-gaap_InterestPaidNet_eae9d193-d4ee-44f6-975d-4b62dd2bfc82" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesPaidNet_325759be-c148-4f7f-b17a-2629f1aa7860" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxesPaidNet"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_CashPaidDuringPeriodForAbstract_e65214af-1982-4fb8-8e7f-dcdfd316bbcf" xlink:to="loc_us-gaap_IncomeTaxesPaidNet_325759be-c148-4f7f-b17a-2629f1aa7860" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_652659d3-36e9-4633-b395-b9adb3e21296" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NoncashInvestingAndFinancingItemsAbstract"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_c7b2f450-836a-403f-b917-3acbcd0a8971" xlink:to="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_652659d3-36e9-4633-b395-b9adb3e21296" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_2fdbcd89-ab6f-4ebe-9df3-39005edb23a8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CapitalExpendituresIncurredButNotYetPaid"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_652659d3-36e9-4633-b395-b9adb3e21296" xlink:to="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_2fdbcd89-ab6f-4ebe-9df3-39005edb23a8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPolicies" xlink:type="simple" xlink:href="bwxt-20251231.xsd#BasisofPresentationandSignificantAccountingPolicies"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPolicies" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_f93480ee-a874-48bb-bba0-7a953921013f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountingPoliciesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_1855ddec-2943-476f-95da-446bdf829152" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_f93480ee-a874-48bb-bba0-7a953921013f" xlink:to="loc_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_1855ddec-2943-476f-95da-446bdf829152" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/Acquisitions" xlink:type="simple" xlink:href="bwxt-20251231.xsd#Acquisitions"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/Acquisitions" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_8cbe5661-9b86-4fce-a81a-05daebf74cc4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationAndAssetAcquisitionAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationDisclosureTextBlock_beb7a468-5cff-4cf9-bc96-22fc75d30ac9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationDisclosureTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_8cbe5661-9b86-4fce-a81a-05daebf74cc4" xlink:to="loc_us-gaap_BusinessCombinationDisclosureTextBlock_beb7a468-5cff-4cf9-bc96-22fc75d30ac9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/RevenueRecognition" xlink:type="simple" xlink:href="bwxt-20251231.xsd#RevenueRecognition"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/RevenueRecognition" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerAbstract_72aa730c-f147-4e01-b68d-8060a636e14a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerTextBlock_1b422ef9-3b1a-48a1-93a5-5798ae80da66" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerAbstract_72aa730c-f147-4e01-b68d-8060a636e14a" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerTextBlock_1b422ef9-3b1a-48a1-93a5-5798ae80da66" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/EquityMethodInvestments" xlink:type="simple" xlink:href="bwxt-20251231.xsd#EquityMethodInvestments"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/EquityMethodInvestments" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_d83b0b61-e3ef-49bd-ab6d-7c9aa6de0c7d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentsDisclosureTextBlock_e85e6127-a94b-4c20-be92-48773a453c06" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentsDisclosureTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_d83b0b61-e3ef-49bd-ab6d-7c9aa6de0c7d" xlink:to="loc_us-gaap_EquityMethodInvestmentsDisclosureTextBlock_e85e6127-a94b-4c20-be92-48773a453c06" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/IncomeTaxes" xlink:type="simple" xlink:href="bwxt-20251231.xsd#IncomeTaxes"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/IncomeTaxes" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_7c10fac9-70c3-4a42-aa67-49e6c9772cb8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxDisclosureTextBlock_f7593a47-c60f-4ce5-82cb-2174fe11565e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxDisclosureTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_7c10fac9-70c3-4a42-aa67-49e6c9772cb8" xlink:to="loc_us-gaap_IncomeTaxDisclosureTextBlock_f7593a47-c60f-4ce5-82cb-2174fe11565e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/LongTermDebt" xlink:type="simple" xlink:href="bwxt-20251231.xsd#LongTermDebt"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/LongTermDebt" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtDisclosureAbstract_042022c0-64a5-4914-a016-ec162869f397" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtTextBlock_7648e95d-83a8-4e48-9d13-a00eca2625f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_042022c0-64a5-4914-a016-ec162869f397" xlink:to="loc_us-gaap_LongTermDebtTextBlock_7648e95d-83a8-4e48-9d13-a00eca2625f0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/PensionPlansandPostretirementBenefits" xlink:type="simple" xlink:href="bwxt-20251231.xsd#PensionPlansandPostretirementBenefits"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/PensionPlansandPostretirementBenefits" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_a672302d-0a3a-49ce-a9ba-90e2b0b1f358" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_8fc59d41-b97f-47c2-993c-2cd0fd68bc49" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_a672302d-0a3a-49ce-a9ba-90e2b0b1f358" xlink:to="loc_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_8fc59d41-b97f-47c2-993c-2cd0fd68bc49" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/CapitalStock" xlink:type="simple" xlink:href="bwxt-20251231.xsd#CapitalStock"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/CapitalStock" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityAbstract_14ff6d44-19ca-4289-95cc-5fc91f7070de" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_3e00042b-301d-444d-a4af-ffc0caca7a5a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityAbstract_14ff6d44-19ca-4289-95cc-5fc91f7070de" xlink:to="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_3e00042b-301d-444d-a4af-ffc0caca7a5a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/StockBasedCompensation" xlink:type="simple" xlink:href="bwxt-20251231.xsd#StockBasedCompensation"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/StockBasedCompensation" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_6a23d3c6-8eb5-4150-893e-08ed50825dfe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_0600548a-8fbb-4e16-baee-f3ba9c023146" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_6a23d3c6-8eb5-4150-893e-08ed50825dfe" xlink:to="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_0600548a-8fbb-4e16-baee-f3ba9c023146" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/CommitmentsandContingencies" xlink:type="simple" xlink:href="bwxt-20251231.xsd#CommitmentsandContingencies"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/CommitmentsandContingencies" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_522f9d55-b2d8-41ab-b1c3-8b45438081bb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_3b6e2392-5a4c-46a6-999e-3ee8e822cea8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_522f9d55-b2d8-41ab-b1c3-8b45438081bb" xlink:to="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_3b6e2392-5a4c-46a6-999e-3ee8e822cea8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/RisksandUncertainties" xlink:type="simple" xlink:href="bwxt-20251231.xsd#RisksandUncertainties"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/RisksandUncertainties" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RisksAndUncertaintiesAbstract_a7837ed3-0378-420f-a10f-3333814b269a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RisksAndUncertaintiesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_RisksAndUncertaintiesTextBlock_975114d0-2fe8-4594-bef2-e98e1e1c85eb" xlink:href="bwxt-20251231.xsd#bwxt_RisksAndUncertaintiesTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RisksAndUncertaintiesAbstract_a7837ed3-0378-420f-a10f-3333814b269a" xlink:to="loc_bwxt_RisksAndUncertaintiesTextBlock_975114d0-2fe8-4594-bef2-e98e1e1c85eb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/FinancialInstrumentswithConcentrationsofCreditRisk" xlink:type="simple" xlink:href="bwxt-20251231.xsd#FinancialInstrumentswithConcentrationsofCreditRisk"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/FinancialInstrumentswithConcentrationsofCreditRisk" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RisksAndUncertaintiesAbstract_abe68ed3-8716-4a4c-9c7f-a107fdd14146" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RisksAndUncertaintiesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskDisclosureTextBlock_942e4acb-ab86-4af5-a238-81fa44609810" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskDisclosureTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RisksAndUncertaintiesAbstract_abe68ed3-8716-4a4c-9c7f-a107fdd14146" xlink:to="loc_us-gaap_ConcentrationRiskDisclosureTextBlock_942e4acb-ab86-4af5-a238-81fa44609810" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/Investments" xlink:type="simple" xlink:href="bwxt-20251231.xsd#Investments"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/Investments" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_b67a5606-9cc6-49c1-9be7-a4e99e767f9b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock_5fa551da-df46-4bf8-92fe-d37be380a74b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_b67a5606-9cc6-49c1-9be7-a4e99e767f9b" xlink:to="loc_us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock_5fa551da-df46-4bf8-92fe-d37be380a74b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/FairValueMeasurements" xlink:type="simple" xlink:href="bwxt-20251231.xsd#FairValueMeasurements"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/FairValueMeasurements" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract_054e8adb-bf2b-4fa3-9379-1498c3710292" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueDisclosuresAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosuresTextBlock_01ab3ab5-f9b8-4c51-bbe4-2a03e9edff82" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueDisclosuresTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueDisclosuresAbstract_054e8adb-bf2b-4fa3-9379-1498c3710292" xlink:to="loc_us-gaap_FairValueDisclosuresTextBlock_01ab3ab5-f9b8-4c51-bbe4-2a03e9edff82" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/SegmentReporting" xlink:type="simple" xlink:href="bwxt-20251231.xsd#SegmentReporting"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/SegmentReporting" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingAbstract_bf52eaad-cc6f-427c-a6f8-f2e6da74bb91" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingDisclosureTextBlock_b88d9e0c-4e9c-4702-99c0-f29702b91c42" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingDisclosureTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_bf52eaad-cc6f-427c-a6f8-f2e6da74bb91" xlink:to="loc_us-gaap_SegmentReportingDisclosureTextBlock_b88d9e0c-4e9c-4702-99c0-f29702b91c42" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/QuarterlyFinancialDataUnaudited" xlink:type="simple" xlink:href="bwxt-20251231.xsd#QuarterlyFinancialDataUnaudited"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/QuarterlyFinancialDataUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_76eb67fb-e4ad-4b7e-8432-050f50cfa8b2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_QuarterlyFinancialInformationDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_QuarterlyFinancialInformationTextBlock_17b2a614-a5b4-4a49-ac0c-7f3531d44347" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_QuarterlyFinancialInformationTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_76eb67fb-e4ad-4b7e-8432-050f50cfa8b2" xlink:to="loc_us-gaap_QuarterlyFinancialInformationTextBlock_17b2a614-a5b4-4a49-ac0c-7f3531d44347" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/EarningsPerShare" xlink:type="simple" xlink:href="bwxt-20251231.xsd#EarningsPerShare"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/EarningsPerShare" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_8d617392-bc2f-45cb-9ac0-1fc52dedad22" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareTextBlock_93a74e49-ba2e-4149-b85c-474a8f8cf4ec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_8d617392-bc2f-45cb-9ac0-1fc52dedad22" xlink:to="loc_us-gaap_EarningsPerShareTextBlock_93a74e49-ba2e-4149-b85c-474a8f8cf4ec" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesPolicies" xlink:type="simple" xlink:href="bwxt-20251231.xsd#BasisofPresentationandSignificantAccountingPoliciesPolicies"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesPolicies" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountingPoliciesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingPolicyPolicyTextBlock_9ae0414c-ff5a-473d-a914-2f308372ce76" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingPolicyPolicyTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_SegmentReportingPolicyPolicyTextBlock_9ae0414c-ff5a-473d-a914-2f308372ce76" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_0e9246a5-e722-4743-8cfc-9779a2ecaff3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_0e9246a5-e722-4743-8cfc-9779a2ecaff3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UseOfEstimates_ff57aade-3476-4491-abe5-36b28b25e363" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UseOfEstimates"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_UseOfEstimates_ff57aade-3476-4491-abe5-36b28b25e363" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRecognitionPolicyTextBlock_af8ac5f9-b118-4ae2-9b5b-43394b8e292e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRecognitionPolicyTextBlock"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_RevenueRecognitionPolicyTextBlock_af8ac5f9-b118-4ae2-9b5b-43394b8e292e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_3b77a276-0f11-4b9b-99e2-785c9898598a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_3b77a276-0f11-4b9b-99e2-785c9898598a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_GrantAccountingPolicyPolicyTextBlock_3ad15014-ac18-4fb8-a9c2-26bb48ddfcd7" xlink:href="bwxt-20251231.xsd#bwxt_GrantAccountingPolicyPolicyTextBlock"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_bwxt_GrantAccountingPolicyPolicyTextBlock_3ad15014-ac18-4fb8-a9c2-26bb48ddfcd7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpensePolicy_109d4230-2f35-409f-bbfa-33a4057151a9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ResearchAndDevelopmentExpensePolicy"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpensePolicy_109d4230-2f35-409f-bbfa-33a4057151a9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestCapitalizationPolicyPolicyTextBlock_8c0cb42b-6903-4fa4-b8f4-60d54457bb50" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestCapitalizationPolicyPolicyTextBlock"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_InterestCapitalizationPolicyPolicyTextBlock_8c0cb42b-6903-4fa4-b8f4-60d54457bb50" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxPolicyTextBlock_6e0e5c22-5ff5-41d3-8dd3-93b688cb8fc7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxPolicyTextBlock"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_IncomeTaxPolicyTextBlock_6e0e5c22-5ff5-41d3-8dd3-93b688cb8fc7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerSharePolicyTextBlock_1d5517d4-5356-43b1-b937-e57e793e629f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerSharePolicyTextBlock"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_EarningsPerSharePolicyTextBlock_1d5517d4-5356-43b1-b937-e57e793e629f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_e215f1d8-efb7-4d06-8f41-e5bafca65ab8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_e215f1d8-efb7-4d06-8f41-e5bafca65ab8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentPolicyTextBlock_bddbacac-f80d-42f7-b028-c3c582e32a37" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentPolicyTextBlock"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_InvestmentPolicyTextBlock_bddbacac-f80d-42f7-b028-c3c582e32a37" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryPolicyTextBlock_305f7e21-30bd-4454-a8f2-40b94e9b499f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryPolicyTextBlock"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_InventoryPolicyTextBlock_305f7e21-30bd-4454-a8f2-40b94e9b499f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_a7e84f88-0315-43f5-9e06-6e0f60468073" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_a7e84f88-0315-43f5-9e06-6e0f60468073" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy_e14a826d-ed65-4fd1-b928-d931f409a621" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy_e14a826d-ed65-4fd1-b928-d931f409a621" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentsIssuancesPolicy_8309c13e-8e7c-4a8b-9ffc-210e8e537fd1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentsIssuancesPolicy"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_EquityMethodInvestmentsIssuancesPolicy_8309c13e-8e7c-4a8b-9ffc-210e8e537fd1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy_7ecbde6a-b113-4a7e-befd-4834a0310d7e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy_7ecbde6a-b113-4a7e-befd-4834a0310d7e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeasesPolicyTextBlock_157ac311-04d9-47a9-8057-031b5c0de300" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeLeasesPolicyTextBlock"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_LesseeLeasesPolicyTextBlock_157ac311-04d9-47a9-8057-031b5c0de300" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StandardProductWarrantyPolicy_387034c3-7585-40eb-82c1-2f13511905e6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StandardProductWarrantyPolicy"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_StandardProductWarrantyPolicy_387034c3-7585-40eb-82c1-2f13511905e6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_OtherNonCurrentAssetsPolicyTextBlock_58d1f131-7441-4dcb-9c62-1785fcc01c9a" xlink:href="bwxt-20251231.xsd#bwxt_OtherNonCurrentAssetsPolicyTextBlock"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_bwxt_OtherNonCurrentAssetsPolicyTextBlock_58d1f131-7441-4dcb-9c62-1785fcc01c9a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementPlansPolicy_75ee3f18-b186-4aeb-9471-54777a6d678a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionAndOtherPostretirementPlansPolicy"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_PensionAndOtherPostretirementPlansPolicy_75ee3f18-b186-4aeb-9471-54777a6d678a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationsAndEnvironmentalCostPolicyTextBlock_712cee2d-9bb8-47b1-b029-7293ffa0f1ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationsAndEnvironmentalCostPolicyTextBlock"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_AssetRetirementObligationsAndEnvironmentalCostPolicyTextBlock_712cee2d-9bb8-47b1-b029-7293ffa0f1ed" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SelfInsuranceReservePolicyTextBlock_1d475209-d7e7-4b38-9eb9-ec90253fe351" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SelfInsuranceReservePolicyTextBlock"/>
    <link:presentationArc order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_SelfInsuranceReservePolicyTextBlock_1d475209-d7e7-4b38-9eb9-ec90253fe351" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingenciesPolicyTextBlock_30aee9ef-2991-412d-bf58-97081dc36404" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommitmentsAndContingenciesPolicyTextBlock"/>
    <link:presentationArc order="24" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_CommitmentsAndContingenciesPolicyTextBlock_30aee9ef-2991-412d-bf58-97081dc36404" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_c5f5e7f5-6ef0-4d0b-aecc-dd7beb675cdc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock"/>
    <link:presentationArc order="25" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_c5f5e7f5-6ef0-4d0b-aecc-dd7beb675cdc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesPolicyTextBlock_3b06a6fb-fd86-4973-9de3-0fcf5d1af074" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativesPolicyTextBlock"/>
    <link:presentationArc order="26" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_DerivativesPolicyTextBlock_3b06a6fb-fd86-4973-9de3-0fcf5d1af074" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementPolicyPolicyTextBlock_d66b637e-8258-45b5-a28e-907ef31f3630" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementPolicyPolicyTextBlock"/>
    <link:presentationArc order="27" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d0c7bfb6-eeab-4ea6-bb5d-c2f1d31031e3" xlink:to="loc_us-gaap_FairValueMeasurementPolicyPolicyTextBlock_d66b637e-8258-45b5-a28e-907ef31f3630" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesTables" xlink:type="simple" xlink:href="bwxt-20251231.xsd#BasisofPresentationandSignificantAccountingPoliciesTables"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_8824e26d-0e5c-4fb9-b397-dfed5b35bf5e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountingPoliciesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock_bf84e5c3-f42d-4c2f-bdb0-f59e29c73469" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8824e26d-0e5c-4fb9-b397-dfed5b35bf5e" xlink:to="loc_us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock_bf84e5c3-f42d-4c2f-bdb0-f59e29c73469" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_2c08186f-74e9-4401-a46f-3394b7423745" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8824e26d-0e5c-4fb9-b397-dfed5b35bf5e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_2c08186f-74e9-4401-a46f-3394b7423745" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTextBlock_46978be3-f4c8-479b-aca2-c06b68d107f3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfGoodwillTextBlock"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8824e26d-0e5c-4fb9-b397-dfed5b35bf5e" xlink:to="loc_us-gaap_ScheduleOfGoodwillTextBlock_46978be3-f4c8-479b-aca2-c06b68d107f3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ScheduleOfIntangibleAssetsTableTextBlock_6b3932db-baff-4f69-9f4e-18860024fe20" xlink:href="bwxt-20251231.xsd#bwxt_ScheduleOfIntangibleAssetsTableTextBlock"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8824e26d-0e5c-4fb9-b397-dfed5b35bf5e" xlink:to="loc_bwxt_ScheduleOfIntangibleAssetsTableTextBlock_6b3932db-baff-4f69-9f4e-18860024fe20" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ScheduleOfChangesInCarryingAmountOfOtherIntangibleAssetsTableTextBlock_9c974722-aae4-4959-927e-b5292b335800" xlink:href="bwxt-20251231.xsd#bwxt_ScheduleOfChangesInCarryingAmountOfOtherIntangibleAssetsTableTextBlock"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8824e26d-0e5c-4fb9-b397-dfed5b35bf5e" xlink:to="loc_bwxt_ScheduleOfChangesInCarryingAmountOfOtherIntangibleAssetsTableTextBlock_9c974722-aae4-4959-927e-b5292b335800" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_b83ba3ac-98ab-45b5-bc28-7454bc78b3e3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8824e26d-0e5c-4fb9-b397-dfed5b35bf5e" xlink:to="loc_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_b83ba3ac-98ab-45b5-bc28-7454bc78b3e3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_2112a0c6-094c-41ee-8329-feeafac85f3f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8824e26d-0e5c-4fb9-b397-dfed5b35bf5e" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_2112a0c6-094c-41ee-8329-feeafac85f3f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfOtherAssetsNoncurrentTextBlock_3f1dcfdb-621a-4a10-a664-10debeaaeb70" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfOtherAssetsNoncurrentTextBlock"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8824e26d-0e5c-4fb9-b397-dfed5b35bf5e" xlink:to="loc_us-gaap_ScheduleOfOtherAssetsNoncurrentTextBlock_3f1dcfdb-621a-4a10-a664-10debeaaeb70" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAssetRetirementObligationsTableTextBlock_2e464974-7aa8-432a-9545-5538aa087ca6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAssetRetirementObligationsTableTextBlock"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8824e26d-0e5c-4fb9-b397-dfed5b35bf5e" xlink:to="loc_us-gaap_ScheduleOfAssetRetirementObligationsTableTextBlock_2e464974-7aa8-432a-9545-5538aa087ca6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_6c6a7682-8ba7-4b8c-a83b-f419b497a9c1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8824e26d-0e5c-4fb9-b397-dfed5b35bf5e" xlink:to="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_6c6a7682-8ba7-4b8c-a83b-f419b497a9c1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock_f81bad26-adbe-435d-8970-67df86f85c9a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8824e26d-0e5c-4fb9-b397-dfed5b35bf5e" xlink:to="loc_us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock_f81bad26-adbe-435d-8970-67df86f85c9a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/AcquisitionTables" xlink:type="simple" xlink:href="bwxt-20251231.xsd#AcquisitionTables"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/AcquisitionTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_44119abf-66ef-4319-8f25-af78be052987" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationAndAssetAcquisitionAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTextBlock_949e847e-355b-4f48-af34-be892c51a6ad" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_44119abf-66ef-4319-8f25-af78be052987" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTextBlock_949e847e-355b-4f48-af34-be892c51a6ad" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTableTextBlock_019bb896-1404-7856-aebd-d4bfb7107530" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTableTextBlock"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_44119abf-66ef-4319-8f25-af78be052987" xlink:to="loc_us-gaap_FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTableTextBlock_019bb896-1404-7856-aebd-d4bfb7107530" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTextBlock_019c6720-8001-715f-8761-15521eb6ad93" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTextBlock"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_44119abf-66ef-4319-8f25-af78be052987" xlink:to="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTextBlock_019c6720-8001-715f-8761-15521eb6ad93" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/RevenueRecognitionTables" xlink:type="simple" xlink:href="bwxt-20251231.xsd#RevenueRecognitionTables"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/RevenueRecognitionTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerAbstract_7e2e8585-c8b0-4b5c-9a7a-163e6555801c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTableTextBlock_a51cb7e7-8787-4134-a0cb-093a2f8b02be" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueTableTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerAbstract_7e2e8585-c8b0-4b5c-9a7a-163e6555801c" xlink:to="loc_us-gaap_DisaggregationOfRevenueTableTextBlock_a51cb7e7-8787-4134-a0cb-093a2f8b02be" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_RevenuePerformanceObligationImpactOfChangesInEstimatesTableTextBlock_5ecc52d1-119f-450e-b727-45b2351c0c38" xlink:href="bwxt-20251231.xsd#bwxt_RevenuePerformanceObligationImpactOfChangesInEstimatesTableTextBlock"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerAbstract_7e2e8585-c8b0-4b5c-9a7a-163e6555801c" xlink:to="loc_bwxt_RevenuePerformanceObligationImpactOfChangesInEstimatesTableTextBlock_5ecc52d1-119f-450e-b727-45b2351c0c38" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_546c5295-b7ce-4a11-ab12-20d478b5cf45" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerAbstract_7e2e8585-c8b0-4b5c-9a7a-163e6555801c" xlink:to="loc_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_546c5295-b7ce-4a11-ab12-20d478b5cf45" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/EquityMethodInvestmentsTables" xlink:type="simple" xlink:href="bwxt-20251231.xsd#EquityMethodInvestmentsTables"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/EquityMethodInvestmentsTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_e861094c-5344-4ef7-a074-bcb20bddee94" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_EquityMethodInvestmentCombinedBalanceSheetInformationTableTextBlock_c5381420-98c6-478b-ac91-bc65dfafcb2b" xlink:href="bwxt-20251231.xsd#bwxt_EquityMethodInvestmentCombinedBalanceSheetInformationTableTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_e861094c-5344-4ef7-a074-bcb20bddee94" xlink:to="loc_bwxt_EquityMethodInvestmentCombinedBalanceSheetInformationTableTextBlock_c5381420-98c6-478b-ac91-bc65dfafcb2b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_EquityMethodInvestmentCombinedIncomeStatementInformationTableTextBlock_75ff6e42-027f-4cb6-b9d5-825288e31fe7" xlink:href="bwxt-20251231.xsd#bwxt_EquityMethodInvestmentCombinedIncomeStatementInformationTableTextBlock"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_e861094c-5344-4ef7-a074-bcb20bddee94" xlink:to="loc_bwxt_EquityMethodInvestmentCombinedIncomeStatementInformationTableTextBlock_75ff6e42-027f-4cb6-b9d5-825288e31fe7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_EquityMethodInvestmentReconciliationOfNetIncomeToEquityInIncomeTableTextBlock_7448b7ea-08d6-4197-a510-efcd4be15a3a" xlink:href="bwxt-20251231.xsd#bwxt_EquityMethodInvestmentReconciliationOfNetIncomeToEquityInIncomeTableTextBlock"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_e861094c-5344-4ef7-a074-bcb20bddee94" xlink:to="loc_bwxt_EquityMethodInvestmentReconciliationOfNetIncomeToEquityInIncomeTableTextBlock_7448b7ea-08d6-4197-a510-efcd4be15a3a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsInAndAdvancesToAffiliatesTextBlock_0ff6453f-e640-4bd8-822f-f5e0d6b6bb94" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentsInAndAdvancesToAffiliatesTextBlock"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_e861094c-5344-4ef7-a074-bcb20bddee94" xlink:to="loc_us-gaap_InvestmentsInAndAdvancesToAffiliatesTextBlock_0ff6453f-e640-4bd8-822f-f5e0d6b6bb94" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/IncomeTaxesTables" xlink:type="simple" xlink:href="bwxt-20251231.xsd#IncomeTaxesTables"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/IncomeTaxesTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_41b8c5a8-bb12-4ec2-b6f5-11235c938fb6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock_081e0129-77a9-40b5-880b-519adbb60f27" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_41b8c5a8-bb12-4ec2-b6f5-11235c938fb6" xlink:to="loc_us-gaap_ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock_081e0129-77a9-40b5-880b-519adbb60f27" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_fddfd92c-2ed8-4a6a-949b-3b69170c2754" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_41b8c5a8-bb12-4ec2-b6f5-11235c938fb6" xlink:to="loc_us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_fddfd92c-2ed8-4a6a-949b-3b69170c2754" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock_b718b9c3-21e5-48b1-a181-72311577d126" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_41b8c5a8-bb12-4ec2-b6f5-11235c938fb6" xlink:to="loc_us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock_b718b9c3-21e5-48b1-a181-72311577d126" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_b2ae4b70-2d9f-486a-9707-20c97dde064c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_41b8c5a8-bb12-4ec2-b6f5-11235c938fb6" xlink:to="loc_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_b2ae4b70-2d9f-486a-9707-20c97dde064c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_18bcafee-09f8-475d-a352-0890f37bc957" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_41b8c5a8-bb12-4ec2-b6f5-11235c938fb6" xlink:to="loc_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_18bcafee-09f8-475d-a352-0890f37bc957" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock_019be6f5-d5e7-7284-bdad-c1f9235dd008" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_41b8c5a8-bb12-4ec2-b6f5-11235c938fb6" xlink:to="loc_us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock_019be6f5-d5e7-7284-bdad-c1f9235dd008" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SummaryOfValuationAllowanceTextBlock_8c8ac5b8-5679-4f92-af6a-22cab4ef5bbc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SummaryOfValuationAllowanceTextBlock"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_41b8c5a8-bb12-4ec2-b6f5-11235c938fb6" xlink:to="loc_us-gaap_SummaryOfValuationAllowanceTextBlock_8c8ac5b8-5679-4f92-af6a-22cab4ef5bbc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/LongTermDebtTables" xlink:type="simple" xlink:href="bwxt-20251231.xsd#LongTermDebtTables"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/LongTermDebtTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtDisclosureAbstract_9353e5c1-9438-4884-9878-83cab23a71a2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDebtTableTextBlock_118deebf-5eba-4f87-beb3-1963f202110b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfDebtTableTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_9353e5c1-9438-4884-9878-83cab23a71a2" xlink:to="loc_us-gaap_ScheduleOfDebtTableTextBlock_118deebf-5eba-4f87-beb3-1963f202110b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsTables" xlink:type="simple" xlink:href="bwxt-20251231.xsd#PensionPlansandPostretirementBenefitsTables"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_99e5dbf1-de14-4b20-be26-ace627db66d8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfNetFundedStatusTableTextBlock_96e51424-e1ba-4840-afed-f30b12668c00" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfNetFundedStatusTableTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_99e5dbf1-de14-4b20-be26-ace627db66d8" xlink:to="loc_us-gaap_ScheduleOfNetFundedStatusTableTextBlock_96e51424-e1ba-4840-afed-f30b12668c00" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_f71e8582-aaed-4f41-bd3b-d02a01e2ffd5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfNetBenefitCostsTableTextBlock"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_99e5dbf1-de14-4b20-be26-ace627db66d8" xlink:to="loc_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_f71e8582-aaed-4f41-bd3b-d02a01e2ffd5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ScheduleOfChangesInAccumulatedOtherComprehensiveIncomeLossTableTextBlock_e5b1eedc-17c5-4a99-bff4-5eb6f300973c" xlink:href="bwxt-20251231.xsd#bwxt_ScheduleOfChangesInAccumulatedOtherComprehensiveIncomeLossTableTextBlock"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_99e5dbf1-de14-4b20-be26-ace627db66d8" xlink:to="loc_bwxt_ScheduleOfChangesInAccumulatedOtherComprehensiveIncomeLossTableTextBlock_e5b1eedc-17c5-4a99-bff4-5eb6f300973c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAssumptionsUsedTableTextBlock_d5d027de-4c5e-4499-86e1-37e9336d79ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAssumptionsUsedTableTextBlock"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_99e5dbf1-de14-4b20-be26-ace627db66d8" xlink:to="loc_us-gaap_ScheduleOfAssumptionsUsedTableTextBlock_d5d027de-4c5e-4499-86e1-37e9336d79ed" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfHealthCareCostTrendRatesTableTextBlock_2479b4c3-2dae-45c3-a4a3-1189133ff5e4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfHealthCareCostTrendRatesTableTextBlock"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_99e5dbf1-de14-4b20-be26-ace627db66d8" xlink:to="loc_us-gaap_ScheduleOfHealthCareCostTrendRatesTableTextBlock_2479b4c3-2dae-45c3-a4a3-1189133ff5e4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ScheduleOfAssetAllocationByAssetCategoryTableTextBlock_ae66b924-30d7-4e5d-9426-4f5187a6d76c" xlink:href="bwxt-20251231.xsd#bwxt_ScheduleOfAssetAllocationByAssetCategoryTableTextBlock"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_99e5dbf1-de14-4b20-be26-ace627db66d8" xlink:to="loc_bwxt_ScheduleOfAssetAllocationByAssetCategoryTableTextBlock_ae66b924-30d7-4e5d-9426-4f5187a6d76c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock_107b0fc7-c812-4097-8858-2359d8e28c0f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_99e5dbf1-de14-4b20-be26-ace627db66d8" xlink:to="loc_us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock_107b0fc7-c812-4097-8858-2359d8e28c0f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ScheduleOfInvestmentsMeasuredAtFairValueTableTextBlock_5191e5ae-b0c0-4d57-b91c-59b5f7ac5080" xlink:href="bwxt-20251231.xsd#bwxt_ScheduleOfInvestmentsMeasuredAtFairValueTableTextBlock"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_99e5dbf1-de14-4b20-be26-ace627db66d8" xlink:to="loc_bwxt_ScheduleOfInvestmentsMeasuredAtFairValueTableTextBlock_5191e5ae-b0c0-4d57-b91c-59b5f7ac5080" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock_33e27ed0-8198-42f0-a00f-6bb066ab64a0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_99e5dbf1-de14-4b20-be26-ace627db66d8" xlink:to="loc_us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock_33e27ed0-8198-42f0-a00f-6bb066ab64a0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/StockBasedCompensationTables" xlink:type="simple" xlink:href="bwxt-20251231.xsd#StockBasedCompensationTables"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/StockBasedCompensationTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_6315d0a7-af2d-4985-b0be-7e5374a15beb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_584e2c0c-9e2d-43b2-b93e-5bab59e63612" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_6315d0a7-af2d-4985-b0be-7e5374a15beb" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_584e2c0c-9e2d-43b2-b93e-5bab59e63612" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock_11c32944-f054-4e81-b68d-19b57b484774" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_6315d0a7-af2d-4985-b0be-7e5374a15beb" xlink:to="loc_us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock_11c32944-f054-4e81-b68d-19b57b484774" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/InvestmentsTables" xlink:type="simple" xlink:href="bwxt-20251231.xsd#InvestmentsTables"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/InvestmentsTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_7ed9bd91-a811-40a5-adc7-e3c2966308f9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesTextBlock_f8fd6175-f693-4644-98f9-96c04f5d082e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MarketableSecuritiesTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_7ed9bd91-a811-40a5-adc7-e3c2966308f9" xlink:to="loc_us-gaap_MarketableSecuritiesTextBlock_f8fd6175-f693-4644-98f9-96c04f5d082e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/FairValueMeasurementsTables" xlink:type="simple" xlink:href="bwxt-20251231.xsd#FairValueMeasurementsTables"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/FairValueMeasurementsTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract_0c0248be-539d-4658-914e-37d067e9ebc7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueDisclosuresAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringAndNonrecurringBasisTableTextBlock_0e49d703-4b2c-4234-a31d-4677141e417c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringAndNonrecurringBasisTableTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueDisclosuresAbstract_0c0248be-539d-4658-914e-37d067e9ebc7" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringAndNonrecurringBasisTableTextBlock_0e49d703-4b2c-4234-a31d-4677141e417c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/SegmentReportingTables" xlink:type="simple" xlink:href="bwxt-20251231.xsd#SegmentReportingTables"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/SegmentReportingTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingAbstract_ec23b4c2-cd1a-4572-8684-f10b05df16f5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_bd092503-52c3-4935-ae85-d616e97feb2d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_ec23b4c2-cd1a-4572-8684-f10b05df16f5" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_bd092503-52c3-4935-ae85-d616e97feb2d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock_f7b3644e-2ac4-42d5-a6d5-500ee850bea3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_ec23b4c2-cd1a-4572-8684-f10b05df16f5" xlink:to="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTextBlock_f7b3644e-2ac4-42d5-a6d5-500ee850bea3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesByCountryTextBlock_25af4fa3-9a69-4a68-a300-4ae5892b0b88" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesByCountryTextBlock"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_ec23b4c2-cd1a-4572-8684-f10b05df16f5" xlink:to="loc_us-gaap_ScheduleOfEntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesByCountryTextBlock_25af4fa3-9a69-4a68-a300-4ae5892b0b88" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/QuarterlyFinancialDataUnauditedTables" xlink:type="simple" xlink:href="bwxt-20251231.xsd#QuarterlyFinancialDataUnauditedTables"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/QuarterlyFinancialDataUnauditedTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_54930181-b00f-4162-af36-991dd4e14908" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_QuarterlyFinancialInformationDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_7e1c00f7-c5cf-447e-a4c0-ab0093345585" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_54930181-b00f-4162-af36-991dd4e14908" xlink:to="loc_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_7e1c00f7-c5cf-447e-a4c0-ab0093345585" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/EarningsPerShareTables" xlink:type="simple" xlink:href="bwxt-20251231.xsd#EarningsPerShareTables"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/EarningsPerShareTables" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_6b8891e5-aee3-4bcb-b2dc-a34cf8ce4a08" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_021ae466-30a0-471d-aaa2-4ccfab14d8d0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_6b8891e5-aee3-4bcb-b2dc-a34cf8ce4a08" xlink:to="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_021ae466-30a0-471d-aaa2-4ccfab14d8d0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesAdditionalInformationDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#BasisofPresentationandSignificantAccountingPoliciesAdditionalInformationDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_d38a77a5-1a3c-40aa-b180-41e95582dfa2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountingPoliciesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesTable_79e55dbe-de75-41e3-90bb-627c892b07c0" xlink:href="bwxt-20251231.xsd#bwxt_BasisOfPresentationAndSignificantAccountingPoliciesTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d38a77a5-1a3c-40aa-b180-41e95582dfa2" xlink:to="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesTable_79e55dbe-de75-41e3-90bb-627c892b07c0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_bf9f5793-4fcb-4039-b757-c3a856396437" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesTable_79e55dbe-de75-41e3-90bb-627c892b07c0" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_bf9f5793-4fcb-4039-b757-c3a856396437" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_6f3dddec-d1fd-4584-8d9c-8256b63bacb9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis_bf9f5793-4fcb-4039-b757-c3a856396437" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_6f3dddec-d1fd-4584-8d9c-8256b63bacb9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CashHeldForDecommissioningOfFacilitiesMember_94335c5a-fcd3-4ab5-9521-652c9006b2e0" xlink:href="bwxt-20251231.xsd#bwxt_CashHeldForDecommissioningOfFacilitiesMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_6f3dddec-d1fd-4584-8d9c-8256b63bacb9" xlink:to="loc_bwxt_CashHeldForDecommissioningOfFacilitiesMember_94335c5a-fcd3-4ab5-9521-652c9006b2e0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CashHeldToMeetReinsuranceReserveRequirementsMember_89d1c1bc-0d2e-41c0-ae6e-43bb631fc345" xlink:href="bwxt-20251231.xsd#bwxt_CashHeldToMeetReinsuranceReserveRequirementsMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_6f3dddec-d1fd-4584-8d9c-8256b63bacb9" xlink:to="loc_bwxt_CashHeldToMeetReinsuranceReserveRequirementsMember_89d1c1bc-0d2e-41c0-ae6e-43bb631fc345" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_8e90e1be-832b-4934-9d19-4def934e72c0" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesTable_79e55dbe-de75-41e3-90bb-627c892b07c0" xlink:to="loc_srt_RangeAxis_8e90e1be-832b-4934-9d19-4def934e72c0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_290b8d9f-9208-45b8-a736-ecf5f71a7b6d" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_8e90e1be-832b-4934-9d19-4def934e72c0" xlink:to="loc_srt_RangeMember_290b8d9f-9208-45b8-a736-ecf5f71a7b6d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_35d90011-3e08-441a-b01e-0c2e5e343d1d" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_290b8d9f-9208-45b8-a736-ecf5f71a7b6d" xlink:to="loc_srt_MinimumMember_35d90011-3e08-441a-b01e-0c2e5e343d1d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_349b485a-9ede-4b96-a323-890d6575df66" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_290b8d9f-9208-45b8-a736-ecf5f71a7b6d" xlink:to="loc_srt_MaximumMember_349b485a-9ede-4b96-a323-890d6575df66" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_86f46ea4-71ee-4dcd-b595-f555ca368200" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesTable_79e55dbe-de75-41e3-90bb-627c892b07c0" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_86f46ea4-71ee-4dcd-b595-f555ca368200" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_aac176b4-68c6-44db-b257-5beee22403e1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_86f46ea4-71ee-4dcd-b595-f555ca368200" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_aac176b4-68c6-44db-b257-5beee22403e1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MachineryAndEquipmentMember_53d154cf-e699-4a4d-8b77-c6188b335cb8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MachineryAndEquipmentMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_aac176b4-68c6-44db-b257-5beee22403e1" xlink:to="loc_us-gaap_MachineryAndEquipmentMember_53d154cf-e699-4a4d-8b77-c6188b335cb8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentMember_a924710e-953f-475d-90a9-40c0526ce6d6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_aac176b4-68c6-44db-b257-5beee22403e1" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentMember_a924710e-953f-475d-90a9-40c0526ce6d6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermAxis_5015c768-199a-47d8-abd7-661f0dff5979" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LeaseContractualTermAxis"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesTable_79e55dbe-de75-41e3-90bb-627c892b07c0" xlink:to="loc_us-gaap_LeaseContractualTermAxis_5015c768-199a-47d8-abd7-661f0dff5979" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermDomain_771ff5d1-f488-4d16-9aca-eb42eb92a1da" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LeaseContractualTermDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeaseContractualTermAxis_5015c768-199a-47d8-abd7-661f0dff5979" xlink:to="loc_us-gaap_LeaseContractualTermDomain_771ff5d1-f488-4d16-9aca-eb42eb92a1da" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseAgreementsMember_067c6166-04d3-4dec-bfd4-8501ad8db0be" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LeaseAgreementsMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeaseContractualTermDomain_771ff5d1-f488-4d16-9aca-eb42eb92a1da" xlink:to="loc_us-gaap_LeaseAgreementsMember_067c6166-04d3-4dec-bfd4-8501ad8db0be" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:href="bwxt-20251231.xsd#bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesTable_79e55dbe-de75-41e3-90bb-627c892b07c0" xlink:to="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_f2f31c91-db68-464e-b5e4-16e39731c905" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NumberOfReportableSegments"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_NumberOfReportableSegments_f2f31c91-db68-464e-b5e4-16e39731c905" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ResearchAndDevelopmentExpenseGross_d7e821f6-a77d-4985-8818-e6ffe609dcc3" xlink:href="bwxt-20251231.xsd#bwxt_ResearchAndDevelopmentExpenseGross"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_bwxt_ResearchAndDevelopmentExpenseGross_d7e821f6-a77d-4985-8818-e6ffe609dcc3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ResearchAndDevelopmentExpensePaidByCustomers_99893333-cc92-4e67-8198-21143e6c2753" xlink:href="bwxt-20251231.xsd#bwxt_ResearchAndDevelopmentExpensePaidByCustomers"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_bwxt_ResearchAndDevelopmentExpensePaidByCustomers_99893333-cc92-4e67-8198-21143e6c2753" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestCostsIncurred_c0245ce7-ca2b-40a9-b48f-2b83705c79e8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestCostsIncurred"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_InterestCostsIncurred_c0245ce7-ca2b-40a9-b48f-2b83705c79e8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestCostsCapitalized_aa606a33-99f3-4691-b21b-1e65c3326ebb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestCostsCapitalized"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_InterestCostsCapitalized_aa606a33-99f3-4691-b21b-1e65c3326ebb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_RestrictedCashAndCashEquivalentsIncludingPortionFromOtherAssets_f78a9619-2f67-4789-9de2-601b9c3d19bb" xlink:href="bwxt-20251231.xsd#bwxt_RestrictedCashAndCashEquivalentsIncludingPortionFromOtherAssets"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_bwxt_RestrictedCashAndCashEquivalentsIncludingPortionFromOtherAssets_f78a9619-2f67-4789-9de2-601b9c3d19bb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalents_55a9f72f-bb0a-4ecd-b5e1-1b40d150553c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashAndCashEquivalents"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalents_55a9f72f-bb0a-4ecd-b5e1-1b40d150553c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_9c54c7d8-ced8-4412-a1ee-9acd29102a13" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryNet"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_InventoryNet_9c54c7d8-ced8-4412-a1ee-9acd29102a13" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_0fbc02ac-e7f1-4c23-9645-287f5574a38a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_0fbc02ac-e7f1-4c23-9645-287f5574a38a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_c0893849-3292-4315-8eed-742638d0f237" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Depreciation"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_Depreciation_c0893849-3292-4315-8eed-742638d0f237" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseTermOfContract_7d1b6878-cbd4-4bc9-b7e9-8b6b29dbbfeb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseTermOfContract"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_LesseeOperatingLeaseTermOfContract_7d1b6878-cbd4-4bc9-b7e9-8b6b29dbbfeb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseRenewalTerm_2203335c-c5e8-4973-a69b-1dd0ca9df379" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseRenewalTerm"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_LesseeOperatingLeaseRenewalTerm_2203335c-c5e8-4973-a69b-1dd0ca9df379" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_df28c470-8de0-4627-b48e-55c7a0262daa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_df28c470-8de0-4627-b48e-55c7a0262daa" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList_ccb9b5e0-5123-4069-8cf5-a1b14fb5a1ab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList_ccb9b5e0-5123-4069-8cf5-a1b14fb5a1ab" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseExpense_be83c9cf-938c-4e61-bccf-3896f2eba54c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseExpense"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_OperatingLeaseExpense_be83c9cf-938c-4e61-bccf-3896f2eba54c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentForAmortization_e4544795-0f29-42ff-be4d-c6d50b19845d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdjustmentForAmortization"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_AdjustmentForAmortization_e4544795-0f29-42ff-be4d-c6d50b19845d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasePayments_6c85798d-d4bf-4159-95ee-499dc6998389" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeasePayments"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_OperatingLeasePayments_6c85798d-d4bf-4159-95ee-499dc6998389" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_1fa35d50-df74-4492-b848-9e3349767c7d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_1fa35d50-df74-4492-b848-9e3349767c7d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_39ae7046-eece-4eaf-8503-59ba8b4a5fd9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_39ae7046-eece-4eaf-8503-59ba8b4a5fd9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_72b227c6-600c-47c5-af1a-94971942cea3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_72b227c6-600c-47c5-af1a-94971942cea3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_NumberOfFacilitiesWithGovernmentDecommissioningCostsObligation_468084ef-a7c1-4209-bc44-84e1c3304a00" xlink:href="bwxt-20251231.xsd#bwxt_NumberOfFacilitiesWithGovernmentDecommissioningCostsObligation"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_bwxt_NumberOfFacilitiesWithGovernmentDecommissioningCostsObligation_468084ef-a7c1-4209-bc44-84e1c3304a00" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SelfInsuranceReserve_c0c5f3ed-50c8-4485-ae5a-93b89b0984e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SelfInsuranceReserve"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_SelfInsuranceReserve_c0c5f3ed-50c8-4485-ae5a-93b89b0984e5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_dc958179-4219-4d84-8c81-59f38dbc13c6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax"/>
    <link:presentationArc order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_dc958179-4219-4d84-8c81-59f38dbc13c6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred_d1f1aece-b66d-42c3-b428-3370fb2a1691" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred"/>
    <link:presentationArc order="24" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred_d1f1aece-b66d-42c3-b428-3370fb2a1691" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments_0768fd07-46c2-4ce3-a1bc-43a9bebddb20" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments"/>
    <link:presentationArc order="25" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments_0768fd07-46c2-4ce3-a1bc-43a9bebddb20" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_909c1c49-c72b-4639-bc4a-58dc0c2c0c1c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:presentationArc order="26" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_BasisOfPresentationAndSignificantAccountingPoliciesLineItems_caea8cac-8be6-4051-8a60-062c722e0b67" xlink:to="loc_us-gaap_DerivativeNotionalAmount_909c1c49-c72b-4639-bc4a-58dc0c2c0c1c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesCashandCashEquivalentsandRestrictedCashandCashEquivalentsDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#BasisofPresentationandSignificantAccountingPoliciesCashandCashEquivalentsandRestrictedCashandCashEquivalentsDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesCashandCashEquivalentsandRestrictedCashandCashEquivalentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_1b2a4b35-b6e6-4364-85c7-082756b37bf7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountingPoliciesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_f94e0a17-70b8-41ba-9d54-73f21df42215" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_1b2a4b35-b6e6-4364-85c7-082756b37bf7" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_f94e0a17-70b8-41ba-9d54-73f21df42215" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_44e8cb35-c222-4022-b449-8ce538f7fd7e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_1b2a4b35-b6e6-4364-85c7-082756b37bf7" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_44e8cb35-c222-4022-b449-8ce538f7fd7e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_f2032b38-e34a-48c4-941e-f5dfcba45f46" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashAndCashEquivalentsNoncurrent"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_1b2a4b35-b6e6-4364-85c7-082756b37bf7" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_f2032b38-e34a-48c4-941e-f5dfcba45f46" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_4395edbd-acbb-4c1a-b5ca-cfca436c2bd9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_1b2a4b35-b6e6-4364-85c7-082756b37bf7" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_4395edbd-acbb-4c1a-b5ca-cfca436c2bd9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesPropertyPlantandEquipmentDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#BasisofPresentationandSignificantAccountingPoliciesPropertyPlantandEquipmentDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesPropertyPlantandEquipmentDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_326d31eb-6345-4c3e-8826-4df390d81e47" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountingPoliciesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_c942022b-3340-4a8b-b004-19156420c0c0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_326d31eb-6345-4c3e-8826-4df390d81e47" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_c942022b-3340-4a8b-b004-19156420c0c0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_921d6773-a326-43f4-8be9-69dda560e7c3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_c942022b-3340-4a8b-b004-19156420c0c0" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_921d6773-a326-43f4-8be9-69dda560e7c3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_86949335-3751-40f6-8db1-ef42f554ca9b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_921d6773-a326-43f4-8be9-69dda560e7c3" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_86949335-3751-40f6-8db1-ef42f554ca9b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandMember_c4ba2efd-1be4-4bca-950e-67d06e730014" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LandMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_86949335-3751-40f6-8db1-ef42f554ca9b" xlink:to="loc_us-gaap_LandMember_c4ba2efd-1be4-4bca-950e-67d06e730014" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingMember_5e14c357-c360-4876-89a3-93db7593bf4c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BuildingMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_86949335-3751-40f6-8db1-ef42f554ca9b" xlink:to="loc_us-gaap_BuildingMember_5e14c357-c360-4876-89a3-93db7593bf4c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MachineryAndEquipmentMember_a3c51035-66db-4fe7-b9ab-f9bbfcad31fb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MachineryAndEquipmentMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_86949335-3751-40f6-8db1-ef42f554ca9b" xlink:to="loc_us-gaap_MachineryAndEquipmentMember_a3c51035-66db-4fe7-b9ab-f9bbfcad31fb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetUnderConstructionMember_b0002077-ef56-4479-bf70-33e33f5e23e0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetUnderConstructionMember"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_86949335-3751-40f6-8db1-ef42f554ca9b" xlink:to="loc_us-gaap_AssetUnderConstructionMember_b0002077-ef56-4479-bf70-33e33f5e23e0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1ce398f0-b923-4465-a3ab-162245ff7c9e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_c942022b-3340-4a8b-b004-19156420c0c0" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1ce398f0-b923-4465-a3ab-162245ff7c9e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_5483dacd-f8d8-4c1f-ba1a-b31db5f29aff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1ce398f0-b923-4465-a3ab-162245ff7c9e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_5483dacd-f8d8-4c1f-ba1a-b31db5f29aff" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_83f56794-81a8-400a-a46f-8aed7401476e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1ce398f0-b923-4465-a3ab-162245ff7c9e" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_83f56794-81a8-400a-a46f-8aed7401476e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_d1c86757-7dd0-4d32-9bf9-03a3d40c30cf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_1ce398f0-b923-4465-a3ab-162245ff7c9e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_d1c86757-7dd0-4d32-9bf9-03a3d40c30cf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesChangesinCarryingAmountofGoodwillDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#BasisofPresentationandSignificantAccountingPoliciesChangesinCarryingAmountofGoodwillDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesChangesinCarryingAmountofGoodwillDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_498a3c8c-17d5-485f-84b8-02b16b78c13c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountingPoliciesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_78fbfbf5-0626-4ddc-b81f-47fec214666a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_498a3c8c-17d5-485f-84b8-02b16b78c13c" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_78fbfbf5-0626-4ddc-b81f-47fec214666a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_2b66dddb-3e20-4c08-bcdc-2aad6b1293f1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_78fbfbf5-0626-4ddc-b81f-47fec214666a" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_2b66dddb-3e20-4c08-bcdc-2aad6b1293f1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_fc38457a-924f-4476-bfb4-830eed708a8e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_2b66dddb-3e20-4c08-bcdc-2aad6b1293f1" xlink:to="loc_us-gaap_SegmentDomain_fc38457a-924f-4476-bfb4-830eed708a8e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_GovernmentOperationsSegmentMember_05f9e936-916b-45cd-904f-8a6d10379090" xlink:href="bwxt-20251231.xsd#bwxt_GovernmentOperationsSegmentMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_fc38457a-924f-4476-bfb4-830eed708a8e" xlink:to="loc_bwxt_GovernmentOperationsSegmentMember_05f9e936-916b-45cd-904f-8a6d10379090" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CommercialOperationsSegmentMember_1fccb484-b69a-49fd-8dfc-24b92ab53de9" xlink:href="bwxt-20251231.xsd#bwxt_CommercialOperationsSegmentMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_fc38457a-924f-4476-bfb4-830eed708a8e" xlink:to="loc_bwxt_CommercialOperationsSegmentMember_1fccb484-b69a-49fd-8dfc-24b92ab53de9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_8fc109e7-5b84-4abb-bf03-ed78a54a9066" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_78fbfbf5-0626-4ddc-b81f-47fec214666a" xlink:to="loc_us-gaap_GoodwillLineItems_8fc109e7-5b84-4abb-bf03-ed78a54a9066" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillRollForward_db7465dd-3f25-4c86-a129-05d5871dc2ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillRollForward"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillLineItems_8fc109e7-5b84-4abb-bf03-ed78a54a9066" xlink:to="loc_us-gaap_GoodwillRollForward_db7465dd-3f25-4c86-a129-05d5871dc2ce" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_b76aa5ad-58e9-4d0f-a06f-bf8a61057a39" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillRollForward_db7465dd-3f25-4c86-a129-05d5871dc2ce" xlink:to="loc_us-gaap_Goodwill_b76aa5ad-58e9-4d0f-a06f-bf8a61057a39" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_2418482e-a3ec-457c-844c-e4e1b91b4e77" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillForeignCurrencyTranslationGainLoss"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillRollForward_db7465dd-3f25-4c86-a129-05d5871dc2ce" xlink:to="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_2418482e-a3ec-457c-844c-e4e1b91b4e77" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_8dad266a-03c4-470d-9441-bd7dbf100b9d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillRollForward_db7465dd-3f25-4c86-a129-05d5871dc2ce" xlink:to="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_8dad266a-03c4-470d-9441-bd7dbf100b9d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_212c5e2d-1167-49de-93d9-f4a6eed8ac8f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillRollForward_db7465dd-3f25-4c86-a129-05d5871dc2ce" xlink:to="loc_us-gaap_Goodwill_212c5e2d-1167-49de-93d9-f4a6eed8ac8f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesScheduleofIntangibleAssetsDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#BasisofPresentationandSignificantAccountingPoliciesScheduleofIntangibleAssetsDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesScheduleofIntangibleAssetsDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_3b1c84aa-2154-4fd9-aea9-9fa7bc5df352" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountingPoliciesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ScheduleOfAmortizedAndUnamortizedIntangibleAssetsTable_3595ae52-9cb6-48e3-880a-612230bea3b1" xlink:href="bwxt-20251231.xsd#bwxt_ScheduleOfAmortizedAndUnamortizedIntangibleAssetsTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_3b1c84aa-2154-4fd9-aea9-9fa7bc5df352" xlink:to="loc_bwxt_ScheduleOfAmortizedAndUnamortizedIntangibleAssetsTable_3595ae52-9cb6-48e3-880a-612230bea3b1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_95d8fa85-4023-4107-9154-165b6fc66662" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ScheduleOfAmortizedAndUnamortizedIntangibleAssetsTable_3595ae52-9cb6-48e3-880a-612230bea3b1" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_95d8fa85-4023-4107-9154-165b6fc66662" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_95c3198a-3963-44bd-ac8e-cbed319dbf65" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_95d8fa85-4023-4107-9154-165b6fc66662" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_95c3198a-3963-44bd-ac8e-cbed319dbf65" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_NrcCategoryOneLicenseMember_6d44dbce-705a-4203-8ba7-10d606e44e74" xlink:href="bwxt-20251231.xsd#bwxt_NrcCategoryOneLicenseMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_95c3198a-3963-44bd-ac8e-cbed319dbf65" xlink:to="loc_bwxt_NrcCategoryOneLicenseMember_6d44dbce-705a-4203-8ba7-10d606e44e74" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_019c671f-bfdc-7685-ac82-9cd394295f47" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TradeNamesMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_95c3198a-3963-44bd-ac8e-cbed319dbf65" xlink:to="loc_us-gaap_TradeNamesMember_019c671f-bfdc-7685-ac82-9cd394295f47" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_c7c9e84a-4969-4842-880a-8ccdc8c31474" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ScheduleOfAmortizedAndUnamortizedIntangibleAssetsTable_3595ae52-9cb6-48e3-880a-612230bea3b1" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_c7c9e84a-4969-4842-880a-8ccdc8c31474" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_515ca966-7135-4b58-ac4e-f7cdfab8d8d3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_c7c9e84a-4969-4842-880a-8ccdc8c31474" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_515ca966-7135-4b58-ac4e-f7cdfab8d8d3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_TechnicalSupportAgreementandRelationshipMember_0bd412bb-d7de-4546-8beb-5e7b5ed86253" xlink:href="bwxt-20251231.xsd#bwxt_TechnicalSupportAgreementandRelationshipMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_515ca966-7135-4b58-ac4e-f7cdfab8d8d3" xlink:to="loc_bwxt_TechnicalSupportAgreementandRelationshipMember_0bd412bb-d7de-4546-8beb-5e7b5ed86253" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_b38f0f71-06fe-4cc8-a5fd-ee874315c21c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_515ca966-7135-4b58-ac4e-f7cdfab8d8d3" xlink:to="loc_us-gaap_CustomerRelationshipsMember_b38f0f71-06fe-4cc8-a5fd-ee874315c21c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnpatentedTechnologyMember_2375a117-ceb8-47d9-b8cc-5d5ec041c2d3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnpatentedTechnologyMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_515ca966-7135-4b58-ac4e-f7cdfab8d8d3" xlink:to="loc_us-gaap_UnpatentedTechnologyMember_2375a117-ceb8-47d9-b8cc-5d5ec041c2d3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LicensingAgreementsMember_e40ba513-b22d-481e-ad97-65fd89d5c863" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LicensingAgreementsMember"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_515ca966-7135-4b58-ac4e-f7cdfab8d8d3" xlink:to="loc_us-gaap_LicensingAgreementsMember_e40ba513-b22d-481e-ad97-65fd89d5c863" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OrderOrProductionBacklogMember_1271a8b3-5334-4326-b2b3-cd1724ed9eb9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OrderOrProductionBacklogMember"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_515ca966-7135-4b58-ac4e-f7cdfab8d8d3" xlink:to="loc_us-gaap_OrderOrProductionBacklogMember_1271a8b3-5334-4326-b2b3-cd1724ed9eb9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PatentedTechnologyMember_4b5ab818-ece6-4da3-a791-5c2bce02875e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PatentedTechnologyMember"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_515ca966-7135-4b58-ac4e-f7cdfab8d8d3" xlink:to="loc_us-gaap_PatentedTechnologyMember_4b5ab818-ece6-4da3-a791-5c2bce02875e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_ef5ff860-d4d5-4dd4-acfb-bab9e9922901" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherIntangibleAssetsMember"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_515ca966-7135-4b58-ac4e-f7cdfab8d8d3" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_ef5ff860-d4d5-4dd4-acfb-bab9e9922901" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ScheduleOfAmortizedAndUnamortizedIntangibleAssetsLineItems_6e6dae79-0f3a-4f5f-9e25-97c0820f4656" xlink:href="bwxt-20251231.xsd#bwxt_ScheduleOfAmortizedAndUnamortizedIntangibleAssetsLineItems"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ScheduleOfAmortizedAndUnamortizedIntangibleAssetsTable_3595ae52-9cb6-48e3-880a-612230bea3b1" xlink:to="loc_bwxt_ScheduleOfAmortizedAndUnamortizedIntangibleAssetsLineItems_6e6dae79-0f3a-4f5f-9e25-97c0820f4656" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_edfd65ab-ae40-4288-a220-0385bec11d21" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ScheduleOfAmortizedAndUnamortizedIntangibleAssetsLineItems_6e6dae79-0f3a-4f5f-9e25-97c0820f4656" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_edfd65ab-ae40-4288-a220-0385bec11d21" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_908c8f02-7ace-4208-aef5-8f1c12457fcc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ScheduleOfAmortizedAndUnamortizedIntangibleAssetsLineItems_6e6dae79-0f3a-4f5f-9e25-97c0820f4656" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_908c8f02-7ace-4208-aef5-8f1c12457fcc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_68eecdd3-e84f-4677-9d23-e199dbdf81a8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ScheduleOfAmortizedAndUnamortizedIntangibleAssetsLineItems_6e6dae79-0f3a-4f5f-9e25-97c0820f4656" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_68eecdd3-e84f-4677-9d23-e199dbdf81a8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_55a184c2-0c95-4b96-8ed7-8c31929ffd9a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ScheduleOfAmortizedAndUnamortizedIntangibleAssetsLineItems_6e6dae79-0f3a-4f5f-9e25-97c0820f4656" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_55a184c2-0c95-4b96-8ed7-8c31929ffd9a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesChangesinCarryingAmountofIntangibleAssetsDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#BasisofPresentationandSignificantAccountingPoliciesChangesinCarryingAmountofIntangibleAssetsDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesChangesinCarryingAmountofIntangibleAssetsDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_c853f764-09d2-4330-bcdc-5dab5c8da9ba" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountingPoliciesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_29a5a8dd-98d4-4d68-aa74-4d7c1f5c6924" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsRollForward"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_c853f764-09d2-4330-bcdc-5dab5c8da9ba" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_29a5a8dd-98d4-4d68-aa74-4d7c1f5c6924" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_4eb64855-ee41-4fee-b21f-78221f46d9f6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_29a5a8dd-98d4-4d68-aa74-4d7c1f5c6924" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_4eb64855-ee41-4fee-b21f-78221f46d9f6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_ab6d4a2d-89f0-4ac6-a33a-9240a629cc83" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinitelivedIntangibleAssetsAcquired1"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_29a5a8dd-98d4-4d68-aa74-4d7c1f5c6924" xlink:to="loc_us-gaap_FinitelivedIntangibleAssetsAcquired1_ab6d4a2d-89f0-4ac6-a33a-9240a629cc83" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_02becd49-1a6b-4728-9b50-c8f4bce180b5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_29a5a8dd-98d4-4d68-aa74-4d7c1f5c6924" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_02becd49-1a6b-4728-9b50-c8f4bce180b5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_FiniteLivedIntangibleAssetsForeignCurrencyTranslationAndOtherGainLoss_54a1a348-91ca-4094-b004-40354e366c54" xlink:href="bwxt-20251231.xsd#bwxt_FiniteLivedIntangibleAssetsForeignCurrencyTranslationAndOtherGainLoss"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_29a5a8dd-98d4-4d68-aa74-4d7c1f5c6924" xlink:to="loc_bwxt_FiniteLivedIntangibleAssetsForeignCurrencyTranslationAndOtherGainLoss_54a1a348-91ca-4094-b004-40354e366c54" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_c129a13b-2fc5-4494-900e-08d96e650386" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsRollForward_29a5a8dd-98d4-4d68-aa74-4d7c1f5c6924" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_c129a13b-2fc5-4494-900e-08d96e650386" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesEstimatedAmortizationExpenseDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#BasisofPresentationandSignificantAccountingPoliciesEstimatedAmortizationExpenseDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesEstimatedAmortizationExpenseDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_d1d83e72-0a43-42b1-ba95-c62f55b43280" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountingPoliciesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_4d829557-dea8-4d3c-8784-a46639855921" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d1d83e72-0a43-42b1-ba95-c62f55b43280" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_4d829557-dea8-4d3c-8784-a46639855921" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_d30e63d2-04e3-4f5f-a6f4-d145aa6ea9c0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d1d83e72-0a43-42b1-ba95-c62f55b43280" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_d30e63d2-04e3-4f5f-a6f4-d145aa6ea9c0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_1c6897a6-6b42-4b6c-82ae-4f8d2d56a886" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d1d83e72-0a43-42b1-ba95-c62f55b43280" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_1c6897a6-6b42-4b6c-82ae-4f8d2d56a886" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_f122e8c8-bdc8-4b57-bb57-b71c29672097" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d1d83e72-0a43-42b1-ba95-c62f55b43280" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_f122e8c8-bdc8-4b57-bb57-b71c29672097" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_28ce4021-4ff8-47af-986b-6961c584c78a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_d1d83e72-0a43-42b1-ba95-c62f55b43280" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_28ce4021-4ff8-47af-986b-6961c584c78a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesLeasesDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#BasisofPresentationandSignificantAccountingPoliciesLeasesDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesLeasesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_8a6bd7ad-e53d-465c-b4de-b6966037df0c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountingPoliciesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_589f4097-f474-4106-a624-5fb5e53a6cf7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8a6bd7ad-e53d-465c-b4de-b6966037df0c" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_589f4097-f474-4106-a624-5fb5e53a6cf7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_ab6d1d18-6fdc-419d-b539-77237a610152" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8a6bd7ad-e53d-465c-b4de-b6966037df0c" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_ab6d1d18-6fdc-419d-b539-77237a610152" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_a6073378-6435-4cd1-89c0-e3f172965f41" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8a6bd7ad-e53d-465c-b4de-b6966037df0c" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_a6073378-6435-4cd1-89c0-e3f172965f41" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_7606cb45-f5a7-4a3e-a023-fe3e41475be0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8a6bd7ad-e53d-465c-b4de-b6966037df0c" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_7606cb45-f5a7-4a3e-a023-fe3e41475be0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_812fe0db-60ca-49cf-b6fc-3ddfaf0d5e5f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8a6bd7ad-e53d-465c-b4de-b6966037df0c" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_812fe0db-60ca-49cf-b6fc-3ddfaf0d5e5f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_f4a764e1-0eb3-4e03-8843-167485155e90" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8a6bd7ad-e53d-465c-b4de-b6966037df0c" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_f4a764e1-0eb3-4e03-8843-167485155e90" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_9ac8ae37-c84e-428d-bf55-d18d35f7612a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8a6bd7ad-e53d-465c-b4de-b6966037df0c" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_9ac8ae37-c84e-428d-bf55-d18d35f7612a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_979e8a19-eef0-4055-8b3e-239ee1a757d5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8a6bd7ad-e53d-465c-b4de-b6966037df0c" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_979e8a19-eef0-4055-8b3e-239ee1a757d5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_24605bd8-14b9-45db-809a-24702dca6a4a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8a6bd7ad-e53d-465c-b4de-b6966037df0c" xlink:to="loc_us-gaap_OperatingLeaseLiability_24605bd8-14b9-45db-809a-24702dca6a4a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_9b2bd2bc-a95a-424b-9c05-e53604ec30c5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_8a6bd7ad-e53d-465c-b4de-b6966037df0c" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_9b2bd2bc-a95a-424b-9c05-e53604ec30c5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesWarrantyExpenseDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#BasisofPresentationandSignificantAccountingPoliciesWarrantyExpenseDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesWarrantyExpenseDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_7d76f6f2-5c95-4478-9295-c615da619597" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountingPoliciesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductWarrantyAccrualClassifiedCurrent_ee63e919-06e3-432b-807f-1429c4519a2b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProductWarrantyAccrualClassifiedCurrent"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_7d76f6f2-5c95-4478-9295-c615da619597" xlink:to="loc_us-gaap_ProductWarrantyAccrualClassifiedCurrent_ee63e919-06e3-432b-807f-1429c4519a2b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesChangesinCarryingAmountofOtherNonCurrentAssetsDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#BasisofPresentationandSignificantAccountingPoliciesChangesinCarryingAmountofOtherNonCurrentAssetsDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesChangesinCarryingAmountofOtherNonCurrentAssetsDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_4a273f19-b9b2-4b7e-bcd7-95a8f6bbcb28" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountingPoliciesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019c34b2-c628-70e3-9001-a8d67e494db6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_4a273f19-b9b2-4b7e-bcd7-95a8f6bbcb28" xlink:to="loc_us-gaap_DebtInstrumentTable_019c34b2-c628-70e3-9001-a8d67e494db6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019c34b3-72e6-7deb-b6c6-3ffbc4ff40b5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_019c34b2-c628-70e3-9001-a8d67e494db6" xlink:to="loc_us-gaap_DebtInstrumentAxis_019c34b3-72e6-7deb-b6c6-3ffbc4ff40b5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019c34b3-72e6-703f-84de-b04924c74df1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentAxis_019c34b3-72e6-7deb-b6c6-3ffbc4ff40b5" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019c34b3-72e6-703f-84de-b04924c74df1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_FormerDebtInstrumentsMember_019c34b3-befb-73e3-b3d8-c99eb6aef6da" xlink:href="bwxt-20251231.xsd#bwxt_FormerDebtInstrumentsMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019c34b3-72e6-703f-84de-b04924c74df1" xlink:to="loc_bwxt_FormerDebtInstrumentsMember_019c34b3-befb-73e3-b3d8-c99eb6aef6da" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019c34b2-c628-78f2-bf07-765c7a30fe35" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_019c34b2-c628-70e3-9001-a8d67e494db6" xlink:to="loc_us-gaap_DebtInstrumentLineItems_019c34b2-c628-78f2-bf07-765c7a30fe35" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DeferredFinanceCostsRollForward_e8e54e0d-bd05-4bc3-b183-7ced8592066c" xlink:href="bwxt-20251231.xsd#bwxt_DeferredFinanceCostsRollForward"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019c34b2-c628-78f2-bf07-765c7a30fe35" xlink:to="loc_bwxt_DeferredFinanceCostsRollForward_e8e54e0d-bd05-4bc3-b183-7ced8592066c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_28ea9ee9-6298-4821-94bb-0a61a94087c6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_DeferredFinanceCostsRollForward_e8e54e0d-bd05-4bc3-b183-7ced8592066c" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_28ea9ee9-6298-4821-94bb-0a61a94087c6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtRelatedCommitmentFeesAndDebtIssuanceCosts_66f6d67e-e0e2-4e37-a70b-a01bbfbac343" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtRelatedCommitmentFeesAndDebtIssuanceCosts"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_DeferredFinanceCostsRollForward_e8e54e0d-bd05-4bc3-b183-7ced8592066c" xlink:to="loc_us-gaap_DebtRelatedCommitmentFeesAndDebtIssuanceCosts_66f6d67e-e0e2-4e37-a70b-a01bbfbac343" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebt_16001ad3-dd36-4f08-ad40-f413857430e6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpenseDebt"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_DeferredFinanceCostsRollForward_e8e54e0d-bd05-4bc3-b183-7ced8592066c" xlink:to="loc_us-gaap_InterestExpenseDebt_16001ad3-dd36-4f08-ad40-f413857430e6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_59a103e0-c29c-4d26-bb6e-389f70cb1aef" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_DeferredFinanceCostsRollForward_e8e54e0d-bd05-4bc3-b183-7ced8592066c" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_59a103e0-c29c-4d26-bb6e-389f70cb1aef" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_019c34b6-d876-790a-9618-c552b9096796" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_DeferredFinanceCostsRollForward_e8e54e0d-bd05-4bc3-b183-7ced8592066c" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_019c34b6-d876-790a-9618-c552b9096796" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesAssetRetirementObligationsDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#BasisofPresentationandSignificantAccountingPoliciesAssetRetirementObligationsDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesAssetRetirementObligationsDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_66b26a5b-5e19-4128-839d-b14eed8556a0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountingPoliciesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_e2e0ce10-f59c-41ca-bc91-05fdefaf5e58" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_66b26a5b-5e19-4128-839d-b14eed8556a0" xlink:to="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_e2e0ce10-f59c-41ca-bc91-05fdefaf5e58" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligation_339092e0-c911-4ea9-a81f-276e881cb940" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligation"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_e2e0ce10-f59c-41ca-bc91-05fdefaf5e58" xlink:to="loc_us-gaap_AssetRetirementObligation_339092e0-c911-4ea9-a81f-276e881cb940" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationLiabilitiesSettled_532c41c0-fd79-4968-9297-74d49790a123" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationLiabilitiesSettled"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_e2e0ce10-f59c-41ca-bc91-05fdefaf5e58" xlink:to="loc_us-gaap_AssetRetirementObligationLiabilitiesSettled_532c41c0-fd79-4968-9297-74d49790a123" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationRevisionOfEstimate_48939e87-1f0f-4f22-a329-7061ccfa9d28" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationRevisionOfEstimate"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_e2e0ce10-f59c-41ca-bc91-05fdefaf5e58" xlink:to="loc_us-gaap_AssetRetirementObligationRevisionOfEstimate_48939e87-1f0f-4f22-a329-7061ccfa9d28" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationAccretionExpense_e97803f5-cd82-4d28-826a-11434575a50c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationAccretionExpense"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_e2e0ce10-f59c-41ca-bc91-05fdefaf5e58" xlink:to="loc_us-gaap_AssetRetirementObligationAccretionExpense_e97803f5-cd82-4d28-826a-11434575a50c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationForeignCurrencyTranslationGainLoss_423e76fb-f28c-479f-8333-ed6d895d3a5d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationForeignCurrencyTranslationGainLoss"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_e2e0ce10-f59c-41ca-bc91-05fdefaf5e58" xlink:to="loc_us-gaap_AssetRetirementObligationForeignCurrencyTranslationGainLoss_423e76fb-f28c-479f-8333-ed6d895d3a5d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligation_8193e4d1-7eeb-44fd-a75b-1f16f42396a1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligation"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetRetirementObligationRollForwardAnalysisRollForward_e2e0ce10-f59c-41ca-bc91-05fdefaf5e58" xlink:to="loc_us-gaap_AssetRetirementObligation_8193e4d1-7eeb-44fd-a75b-1f16f42396a1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationCurrent_a189ce33-309a-41e5-b12d-73b514081c03" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationCurrent"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_66b26a5b-5e19-4128-839d-b14eed8556a0" xlink:to="loc_us-gaap_AssetRetirementObligationCurrent_a189ce33-309a-41e5-b12d-73b514081c03" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesAccumulatedOtherComprehensiveIncomeLossDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#BasisofPresentationandSignificantAccountingPoliciesAccumulatedOtherComprehensiveIncomeLossDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesAccumulatedOtherComprehensiveIncomeLossDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_eab56699-4377-41f5-b403-7678f3846fc4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountingPoliciesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_ca405fed-8152-443f-820c-8cbb10714aec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_eab56699-4377-41f5-b403-7678f3846fc4" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_ca405fed-8152-443f-820c-8cbb10714aec" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_f2569a8a-ae54-4f3b-b1cd-04de97fe59ec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_ca405fed-8152-443f-820c-8cbb10714aec" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_f2569a8a-ae54-4f3b-b1cd-04de97fe59ec" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_0a6fc512-3a92-4221-b20f-4408a972518f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_f2569a8a-ae54-4f3b-b1cd-04de97fe59ec" xlink:to="loc_us-gaap_EquityComponentDomain_0a6fc512-3a92-4221-b20f-4408a972518f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_a4de3d16-2ea2-40e5-b8ce-edff55b7c923" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_0a6fc512-3a92-4221-b20f-4408a972518f" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_a4de3d16-2ea2-40e5-b8ce-edff55b7c923" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_259dac4d-1fd5-4774-9daa-074e177de2bb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_a4de3d16-2ea2-40e5-b8ce-edff55b7c923" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_259dac4d-1fd5-4774-9daa-074e177de2bb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_e7dcd1b2-9e17-4e4c-881a-d3a16625dffd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_a4de3d16-2ea2-40e5-b8ce-edff55b7c923" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_e7dcd1b2-9e17-4e4c-881a-d3a16625dffd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_87e4c374-1fd9-48b6-b9df-7bd4673c0e76" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_a4de3d16-2ea2-40e5-b8ce-edff55b7c923" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_87e4c374-1fd9-48b6-b9df-7bd4673c0e76" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_34b0e2aa-85cf-48fa-b7da-72a0dffa28fc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_a4de3d16-2ea2-40e5-b8ce-edff55b7c923" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_34b0e2aa-85cf-48fa-b7da-72a0dffa28fc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_a13915a3-3db8-49f8-9cc7-9ebd4de90c11" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_ca405fed-8152-443f-820c-8cbb10714aec" xlink:to="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_a13915a3-3db8-49f8-9cc7-9ebd4de90c11" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_6112d1b4-1fad-46aa-ad88-ae98d6e113a7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems_a13915a3-3db8-49f8-9cc7-9ebd4de90c11" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_6112d1b4-1fad-46aa-ad88-ae98d6e113a7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesScheduleofAmountsReclassifiedfromAccumulatedOtherComprehensiveIncomeDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#BasisofPresentationandSignificantAccountingPoliciesScheduleofAmountsReclassifiedfromAccumulatedOtherComprehensiveIncomeDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/BasisofPresentationandSignificantAccountingPoliciesScheduleofAmountsReclassifiedfromAccumulatedOtherComprehensiveIncomeDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_17302113-8fdc-4613-afe1-7311a8c9a7d2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountingPoliciesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_75535bf1-9550-4989-a15f-f7e2113099ca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_17302113-8fdc-4613-afe1-7311a8c9a7d2" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_75535bf1-9550-4989-a15f-f7e2113099ca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_1a7ad194-0494-46e2-9fb9-7c9fe88a1654" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_75535bf1-9550-4989-a15f-f7e2113099ca" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_1a7ad194-0494-46e2-9fb9-7c9fe88a1654" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_3c973acc-6750-4846-aff3-33b0d40d527f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_1a7ad194-0494-46e2-9fb9-7c9fe88a1654" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_3c973acc-6750-4846-aff3-33b0d40d527f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_9796a21e-b239-4f45-b7f0-38e204ee3bf9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_3c973acc-6750-4846-aff3-33b0d40d527f" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember_9796a21e-b239-4f45-b7f0-38e204ee3bf9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_0c380e73-cc40-4049-b498-b33d5250cc2a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_75535bf1-9550-4989-a15f-f7e2113099ca" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_0c380e73-cc40-4049-b498-b33d5250cc2a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_fe28ef59-1731-47a1-9d3e-d1d7eea5403d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_0c380e73-cc40-4049-b498-b33d5250cc2a" xlink:to="loc_us-gaap_EquityComponentDomain_fe28ef59-1731-47a1-9d3e-d1d7eea5403d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_f15a85e7-b568-4f79-a813-ae6e3d02ac0d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_fe28ef59-1731-47a1-9d3e-d1d7eea5403d" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_f15a85e7-b568-4f79-a813-ae6e3d02ac0d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_b6e9c73f-e1c5-42e5-a704-e5c2e4598a94" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_fe28ef59-1731-47a1-9d3e-d1d7eea5403d" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_b6e9c73f-e1c5-42e5-a704-e5c2e4598a94" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_019be11b-3ec0-7003-916a-afb0eb165abf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_fe28ef59-1731-47a1-9d3e-d1d7eea5403d" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_019be11b-3ec0-7003-916a-afb0eb165abf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_3b2b0fba-8e19-4a77-a7fe-b73ee7c820bd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_75535bf1-9550-4989-a15f-f7e2113099ca" xlink:to="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_3b2b0fba-8e19-4a77-a7fe-b73ee7c820bd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_9f27b072-6db2-4541-962c-895f42d8df65" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_3b2b0fba-8e19-4a77-a7fe-b73ee7c820bd" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_9f27b072-6db2-4541-962c-895f42d8df65" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_5d8cba46-0c92-4f98-9acd-c029def62d14" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfRevenue"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_3b2b0fba-8e19-4a77-a7fe-b73ee7c820bd" xlink:to="loc_us-gaap_CostOfRevenue_5d8cba46-0c92-4f98-9acd-c029def62d14" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_e3cc647d-1ba5-48ee-867d-030160e67098" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_3b2b0fba-8e19-4a77-a7fe-b73ee7c820bd" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_e3cc647d-1ba5-48ee-867d-030160e67098" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_OtherIncomeExpenseNet_fb1f35f6-3aed-4b1c-9332-2c364615d958" xlink:href="bwxt-20251231.xsd#bwxt_OtherIncomeExpenseNet"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_3b2b0fba-8e19-4a77-a7fe-b73ee7c820bd" xlink:to="loc_bwxt_OtherIncomeExpenseNet_fb1f35f6-3aed-4b1c-9332-2c364615d958" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_d5fee615-1aa7-4e2c-a48e-f8240763afce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_3b2b0fba-8e19-4a77-a7fe-b73ee7c820bd" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_d5fee615-1aa7-4e2c-a48e-f8240763afce" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_c090899f-293d-4d12-80b8-1a2ef390a995" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfitLoss"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_3b2b0fba-8e19-4a77-a7fe-b73ee7c820bd" xlink:to="loc_us-gaap_ProfitLoss_c090899f-293d-4d12-80b8-1a2ef390a995" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/AcquisitionsDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#AcquisitionsDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/AcquisitionsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_92bd5651-316e-4561-a8a7-2a2c1830815d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationAndAssetAcquisitionAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_73b90f6a-d9df-45c2-b084-1f63e45e17ad" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_92bd5651-316e-4561-a8a7-2a2c1830815d" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_73b90f6a-d9df-45c2-b084-1f63e45e17ad" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_98f214f3-6895-47cb-b52b-f0a9e3590476" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_73b90f6a-d9df-45c2-b084-1f63e45e17ad" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_98f214f3-6895-47cb-b52b-f0a9e3590476" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_651013f6-3243-42e9-9f71-9406eb100e55" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_98f214f3-6895-47cb-b52b-f0a9e3590476" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_651013f6-3243-42e9-9f71-9406eb100e55" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_AerojetOrdnanceTennesseeInc.Member_a387ac4e-fa8e-4117-841e-a560b8e553d8" xlink:href="bwxt-20251231.xsd#bwxt_AerojetOrdnanceTennesseeInc.Member"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_651013f6-3243-42e9-9f71-9406eb100e55" xlink:to="loc_bwxt_AerojetOrdnanceTennesseeInc.Member_a387ac4e-fa8e-4117-841e-a560b8e553d8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_KinectricsHoldingsInc.Member_06d77fab-2b68-44e7-9754-e0854b36334b" xlink:href="bwxt-20251231.xsd#bwxt_KinectricsHoldingsInc.Member"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_651013f6-3243-42e9-9f71-9406eb100e55" xlink:to="loc_bwxt_KinectricsHoldingsInc.Member_06d77fab-2b68-44e7-9754-e0854b36334b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_adb6bf7f-5202-4365-8cd6-77288b6027f6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_73b90f6a-d9df-45c2-b084-1f63e45e17ad" xlink:to="loc_us-gaap_BusinessAcquisitionLineItems_adb6bf7f-5202-4365-8cd6-77288b6027f6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_500df8ca-3c4c-4652-b065-fc0071a7a03b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_adb6bf7f-5202-4365-8cd6-77288b6027f6" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_500df8ca-3c4c-4652-b065-fc0071a7a03b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_BusinessCombinationPurchasePriceReductionAmount_019bb88d-160a-7edf-a11e-9eb6909e3a9b" xlink:href="bwxt-20251231.xsd#bwxt_BusinessCombinationPurchasePriceReductionAmount"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_adb6bf7f-5202-4365-8cd6-77288b6027f6" xlink:to="loc_bwxt_BusinessCombinationPurchasePriceReductionAmount_019bb88d-160a-7edf-a11e-9eb6909e3a9b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019bb88d-e5e5-76f2-a19d-4d74c29ec5c8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_adb6bf7f-5202-4365-8cd6-77288b6027f6" xlink:to="loc_us-gaap_Goodwill_019bb88d-e5e5-76f2-a19d-4d74c29ec5c8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_019bb88e-2017-755b-be91-7ecfaf8e6a28" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_adb6bf7f-5202-4365-8cd6-77288b6027f6" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_019bb88e-2017-755b-be91-7ecfaf8e6a28" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_019bb88e-56d7-7372-97dc-4c4d7297e6e2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_adb6bf7f-5202-4365-8cd6-77288b6027f6" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_019bb88e-56d7-7372-97dc-4c4d7297e6e2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPeriodIncreaseDecrease_019bb890-b253-777d-a8b4-410b2f725690" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillPeriodIncreaseDecrease"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_adb6bf7f-5202-4365-8cd6-77288b6027f6" xlink:to="loc_us-gaap_GoodwillPeriodIncreaseDecrease_019bb890-b253-777d-a8b4-410b2f725690" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityNumberOfEmployees_a9720d72-f714-4ed9-b5ea-6daa3a3bd6db" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityNumberOfEmployees"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_adb6bf7f-5202-4365-8cd6-77288b6027f6" xlink:to="loc_dei_EntityNumberOfEmployees_a9720d72-f714-4ed9-b5ea-6daa3a3bd6db" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_NumberOfSites_99d0d769-4df7-4033-a0d0-b02eb0e39bf6" xlink:href="bwxt-20251231.xsd#bwxt_NumberOfSites"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_adb6bf7f-5202-4365-8cd6-77288b6027f6" xlink:to="loc_bwxt_NumberOfSites_99d0d769-4df7-4033-a0d0-b02eb0e39bf6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationPriceOfAcquisitionExpected_019bb893-a683-7c11-81f2-f0ea55111d3c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationPriceOfAcquisitionExpected"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_adb6bf7f-5202-4365-8cd6-77288b6027f6" xlink:to="loc_us-gaap_BusinessCombinationPriceOfAcquisitionExpected_019bb893-a683-7c11-81f2-f0ea55111d3c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_BusinessCombinationConsiderationTransferredNetOfCertainLiabilitiesAndIndebtedness_019bb893-ef98-7aef-bd42-e72bb260a1be" xlink:href="bwxt-20251231.xsd#bwxt_BusinessCombinationConsiderationTransferredNetOfCertainLiabilitiesAndIndebtedness"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_adb6bf7f-5202-4365-8cd6-77288b6027f6" xlink:to="loc_bwxt_BusinessCombinationConsiderationTransferredNetOfCertainLiabilitiesAndIndebtedness_019bb893-ef98-7aef-bd42-e72bb260a1be" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_019bb895-48e1-7282-9b24-7804cb1c5748" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_adb6bf7f-5202-4365-8cd6-77288b6027f6" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_019bb895-48e1-7282-9b24-7804cb1c5748" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_BusinessCombinationRecognizedAssetAcquiredAssetInvestmentsInUnconsolidatedAffiliates_019bb895-7512-7e39-894b-cb1327a52361" xlink:href="bwxt-20251231.xsd#bwxt_BusinessCombinationRecognizedAssetAcquiredAssetInvestmentsInUnconsolidatedAffiliates"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_adb6bf7f-5202-4365-8cd6-77288b6027f6" xlink:to="loc_bwxt_BusinessCombinationRecognizedAssetAcquiredAssetInvestmentsInUnconsolidatedAffiliates_019bb895-7512-7e39-894b-cb1327a52361" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_BusinessCombinationNetWorkingCapital_019bb895-9b16-76f8-a9c3-30e309a783a0" xlink:href="bwxt-20251231.xsd#bwxt_BusinessCombinationNetWorkingCapital"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_adb6bf7f-5202-4365-8cd6-77288b6027f6" xlink:to="loc_bwxt_BusinessCombinationNetWorkingCapital_019bb895-9b16-76f8-a9c3-30e309a783a0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_BusinessCombinationRecognizedLiabilityAssumedPensionAndOtherPostretirementLiability_019bb895-c4cc-75e7-9813-5c9265b76657" xlink:href="bwxt-20251231.xsd#bwxt_BusinessCombinationRecognizedLiabilityAssumedPensionAndOtherPostretirementLiability"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_adb6bf7f-5202-4365-8cd6-77288b6027f6" xlink:to="loc_bwxt_BusinessCombinationRecognizedLiabilityAssumedPensionAndOtherPostretirementLiability_019bb895-c4cc-75e7-9813-5c9265b76657" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/AcquisitionScheduleofIntangibleAssetsAcquiredDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#AcquisitionScheduleofIntangibleAssetsAcquiredDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/AcquisitionScheduleofIntangibleAssetsAcquiredDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_66647b65-00a5-470f-abb9-ca50f9546c16" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationAndAssetAcquisitionAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable_1ddc7b01-fd59-4318-84ba-a19c7dbcaa9a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_66647b65-00a5-470f-abb9-ca50f9546c16" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable_1ddc7b01-fd59-4318-84ba-a19c7dbcaa9a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_4ebadf02-16c8-44ff-a4da-a89fa3435b31" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable_1ddc7b01-fd59-4318-84ba-a19c7dbcaa9a" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_4ebadf02-16c8-44ff-a4da-a89fa3435b31" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e212cc74-f1c5-4931-acde-bc6a920433cf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_4ebadf02-16c8-44ff-a4da-a89fa3435b31" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e212cc74-f1c5-4931-acde-bc6a920433cf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_AerojetOrdnanceTennesseeInc.Member_019bb891-baf8-777e-9e66-841b801a1668" xlink:href="bwxt-20251231.xsd#bwxt_AerojetOrdnanceTennesseeInc.Member"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e212cc74-f1c5-4931-acde-bc6a920433cf" xlink:to="loc_bwxt_AerojetOrdnanceTennesseeInc.Member_019bb891-baf8-777e-9e66-841b801a1668" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_KinectricsHoldingsInc.Member_019bb896-65ca-7c15-afdd-6fa190a764ec" xlink:href="bwxt-20251231.xsd#bwxt_KinectricsHoldingsInc.Member"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e212cc74-f1c5-4931-acde-bc6a920433cf" xlink:to="loc_bwxt_KinectricsHoldingsInc.Member_019bb896-65ca-7c15-afdd-6fa190a764ec" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_c1040572-7f99-460e-a3bd-fecfdb09b331" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable_1ddc7b01-fd59-4318-84ba-a19c7dbcaa9a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_c1040572-7f99-460e-a3bd-fecfdb09b331" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_cfc0032e-43b0-4e46-9642-d8e224cb2a87" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_c1040572-7f99-460e-a3bd-fecfdb09b331" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_cfc0032e-43b0-4e46-9642-d8e224cb2a87" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_696b603c-4e6d-44c6-9de7-1bd4a23d476c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_cfc0032e-43b0-4e46-9642-d8e224cb2a87" xlink:to="loc_us-gaap_CustomerRelationshipsMember_696b603c-4e6d-44c6-9de7-1bd4a23d476c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OrderOrProductionBacklogMember_9ed85709-0869-497a-8ec0-c1ceb0ca9144" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OrderOrProductionBacklogMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_cfc0032e-43b0-4e46-9642-d8e224cb2a87" xlink:to="loc_us-gaap_OrderOrProductionBacklogMember_9ed85709-0869-497a-8ec0-c1ceb0ca9144" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_019bb896-65ca-7369-8411-6a77283349c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DevelopedTechnologyRightsMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_cfc0032e-43b0-4e46-9642-d8e224cb2a87" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_019bb896-65ca-7369-8411-6a77283349c7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_019bb896-65ca-7058-8cef-8837f88ddd81" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable_1ddc7b01-fd59-4318-84ba-a19c7dbcaa9a" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_019bb896-65ca-7058-8cef-8837f88ddd81" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019bb896-65ca-7af5-8b3b-f21dfea5cc4b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_019bb896-65ca-7058-8cef-8837f88ddd81" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019bb896-65ca-7af5-8b3b-f21dfea5cc4b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_019bb896-65ca-7423-aabb-81c0e3549ba5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TradeNamesMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_019bb896-65ca-7af5-8b3b-f21dfea5cc4b" xlink:to="loc_us-gaap_TradeNamesMember_019bb896-65ca-7423-aabb-81c0e3549ba5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_7fb42db4-6c38-4e0f-9f20-4b1d81dc2a4b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable_1ddc7b01-fd59-4318-84ba-a19c7dbcaa9a" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_7fb42db4-6c38-4e0f-9f20-4b1d81dc2a4b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_27c80f02-cc6e-4e09-ac86-fcee61074fbf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_7fb42db4-6c38-4e0f-9f20-4b1d81dc2a4b" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_27c80f02-cc6e-4e09-ac86-fcee61074fbf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_73632ca3-8d77-40bd-8da3-f33babe6fece" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_7fb42db4-6c38-4e0f-9f20-4b1d81dc2a4b" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_73632ca3-8d77-40bd-8da3-f33babe6fece" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets_019bb896-65ca-7d78-a7d2-31bdec7d4591" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_7fb42db4-6c38-4e0f-9f20-4b1d81dc2a4b" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets_019bb896-65ca-7d78-a7d2-31bdec7d4591" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/RevenueRecognitionDisaggregationofRevenueDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#RevenueRecognitionDisaggregationofRevenueDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/RevenueRecognitionDisaggregationofRevenueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerAbstract_84e42eda-f563-4049-ab63-1488666db450" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_ac5719f0-4a14-4c16-8ad2-d42b462646e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerAbstract_84e42eda-f563-4049-ab63-1488666db450" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_ac5719f0-4a14-4c16-8ad2-d42b462646e5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_bf002663-cc01-4a74-abbf-4920ade504de" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_ac5719f0-4a14-4c16-8ad2-d42b462646e5" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_bf002663-cc01-4a74-abbf-4920ade504de" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_03cd43b7-995b-4d4a-8e69-b4e5fc48d715" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_bf002663-cc01-4a74-abbf-4920ade504de" xlink:to="loc_us-gaap_SegmentDomain_03cd43b7-995b-4d4a-8e69-b4e5fc48d715" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_GovernmentOperationsSegmentMember_d4346ac7-d585-4b85-bb71-992b7b7e1dd1" xlink:href="bwxt-20251231.xsd#bwxt_GovernmentOperationsSegmentMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_03cd43b7-995b-4d4a-8e69-b4e5fc48d715" xlink:to="loc_bwxt_GovernmentOperationsSegmentMember_d4346ac7-d585-4b85-bb71-992b7b7e1dd1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CommercialOperationsSegmentMember_973845b3-d63a-43fb-8141-d880896c74fc" xlink:href="bwxt-20251231.xsd#bwxt_CommercialOperationsSegmentMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_03cd43b7-995b-4d4a-8e69-b4e5fc48d715" xlink:to="loc_bwxt_CommercialOperationsSegmentMember_973845b3-d63a-43fb-8141-d880896c74fc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_9c56ef13-ac20-4233-93c0-5ab4e354e4a4" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementGeographicalAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_ac5719f0-4a14-4c16-8ad2-d42b462646e5" xlink:to="loc_srt_StatementGeographicalAxis_9c56ef13-ac20-4233-93c0-5ab4e354e4a4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_aeaf2670-b0f0-4b2c-8096-0cea5e8befc4" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_StatementGeographicalAxis_9c56ef13-ac20-4233-93c0-5ab4e354e4a4" xlink:to="loc_srt_SegmentGeographicalDomain_aeaf2670-b0f0-4b2c-8096-0cea5e8befc4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_be4f3a55-c265-4bb9-9c49-dc16dfc931a8" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_SegmentGeographicalDomain_aeaf2670-b0f0-4b2c-8096-0cea5e8befc4" xlink:to="loc_country_US_be4f3a55-c265-4bb9-9c49-dc16dfc931a8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CA_46dde5ad-74e2-491c-8bba-50ed89b5040d" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CA"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_SegmentGeographicalDomain_aeaf2670-b0f0-4b2c-8096-0cea5e8befc4" xlink:to="loc_country_CA_46dde5ad-74e2-491c-8bba-50ed89b5040d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_OtherGeographicLocationMember_995b75d4-a20e-4c5c-9d5b-91c3d763e08e" xlink:href="bwxt-20251231.xsd#bwxt_OtherGeographicLocationMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_SegmentGeographicalDomain_aeaf2670-b0f0-4b2c-8096-0cea5e8befc4" xlink:to="loc_bwxt_OtherGeographicLocationMember_995b75d4-a20e-4c5c-9d5b-91c3d763e08e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_9a4160f9-7989-4e47-b62e-e62d65c209c5" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MajorCustomersAxis"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_ac5719f0-4a14-4c16-8ad2-d42b462646e5" xlink:to="loc_srt_MajorCustomersAxis_9a4160f9-7989-4e47-b62e-e62d65c209c5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_1ca378fb-7c36-4318-a2f3-5b249846044a" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_MajorCustomersAxis_9a4160f9-7989-4e47-b62e-e62d65c209c5" xlink:to="loc_srt_NameOfMajorCustomerDomain_1ca378fb-7c36-4318-a2f3-5b249846044a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_GovernmentCustomersMember_62723171-136c-4182-9868-90efc818742d" xlink:href="bwxt-20251231.xsd#bwxt_GovernmentCustomersMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_NameOfMajorCustomerDomain_1ca378fb-7c36-4318-a2f3-5b249846044a" xlink:to="loc_bwxt_GovernmentCustomersMember_62723171-136c-4182-9868-90efc818742d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_NonGovernmentMember_4e622c67-18cc-47e3-a6f4-7a62d527ea60" xlink:href="bwxt-20251231.xsd#bwxt_NonGovernmentMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_NameOfMajorCustomerDomain_1ca378fb-7c36-4318-a2f3-5b249846044a" xlink:to="loc_bwxt_NonGovernmentMember_4e622c67-18cc-47e3-a6f4-7a62d527ea60" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_722c1a3c-555d-4f0f-a422-490aca016e06" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TimingOfTransferOfGoodOrServiceAxis"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_ac5719f0-4a14-4c16-8ad2-d42b462646e5" xlink:to="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_722c1a3c-555d-4f0f-a422-490aca016e06" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_f477c6fa-b5fb-4c75-aa53-1ab0164a40a3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TimingOfTransferOfGoodOrServiceDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_722c1a3c-555d-4f0f-a422-490aca016e06" xlink:to="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_f477c6fa-b5fb-4c75-aa53-1ab0164a40a3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransferredOverTimeMember_658070b0-40f8-4717-a23b-16053b6527f6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransferredOverTimeMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_f477c6fa-b5fb-4c75-aa53-1ab0164a40a3" xlink:to="loc_us-gaap_TransferredOverTimeMember_658070b0-40f8-4717-a23b-16053b6527f6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransferredAtPointInTimeMember_66093847-7efa-438c-ac5d-abfa4aaa62cc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransferredAtPointInTimeMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TimingOfTransferOfGoodOrServiceDomain_f477c6fa-b5fb-4c75-aa53-1ab0164a40a3" xlink:to="loc_us-gaap_TransferredAtPointInTimeMember_66093847-7efa-438c-ac5d-abfa4aaa62cc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerBasisOfPricingAxis_e8e2d88f-a02c-4685-86f9-944c2ace03ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerBasisOfPricingAxis"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_ac5719f0-4a14-4c16-8ad2-d42b462646e5" xlink:to="loc_us-gaap_ContractWithCustomerBasisOfPricingAxis_e8e2d88f-a02c-4685-86f9-944c2ace03ed" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_0e5e3739-068f-4dbc-89c5-d051f1e0e60a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerBasisOfPricingDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ContractWithCustomerBasisOfPricingAxis_e8e2d88f-a02c-4685-86f9-944c2ace03ed" xlink:to="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_0e5e3739-068f-4dbc-89c5-d051f1e0e60a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FixedPriceContractMember_fbaff6f2-f94d-44fe-9a63-1ccd3b9ae0ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FixedPriceContractMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_0e5e3739-068f-4dbc-89c5-d051f1e0e60a" xlink:to="loc_us-gaap_FixedPriceContractMember_fbaff6f2-f94d-44fe-9a63-1ccd3b9ae0ed" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_FirmFixedPriceMember_f83c0d13-a20e-4c6d-90a2-a770b8cca983" xlink:href="bwxt-20251231.xsd#bwxt_FirmFixedPriceMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_0e5e3739-068f-4dbc-89c5-d051f1e0e60a" xlink:to="loc_bwxt_FirmFixedPriceMember_f83c0d13-a20e-4c6d-90a2-a770b8cca983" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CostPlusFeeMember_a4f3af7a-6c43-4d7f-9435-3669dd3e5fe1" xlink:href="bwxt-20251231.xsd#bwxt_CostPlusFeeMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_0e5e3739-068f-4dbc-89c5-d051f1e0e60a" xlink:to="loc_bwxt_CostPlusFeeMember_a4f3af7a-6c43-4d7f-9435-3669dd3e5fe1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimeAndMaterialsContractMember_32c22d59-0932-490f-a97b-fb23f0b9cdb2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TimeAndMaterialsContractMember"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_0e5e3739-068f-4dbc-89c5-d051f1e0e60a" xlink:to="loc_us-gaap_TimeAndMaterialsContractMember_32c22d59-0932-490f-a97b-fb23f0b9cdb2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_46f21ea8-4ddd-4605-8d36-94572e1144e0" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsAxis"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_ac5719f0-4a14-4c16-8ad2-d42b462646e5" xlink:to="loc_srt_ConsolidationItemsAxis_46f21ea8-4ddd-4605-8d36-94572e1144e0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_626ac4b0-9858-4f8a-a796-09e5443cce0a" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsAxis_46f21ea8-4ddd-4605-8d36-94572e1144e0" xlink:to="loc_srt_ConsolidationItemsDomain_626ac4b0-9858-4f8a-a796-09e5443cce0a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_9ea0c76e-cb1c-4b25-8499-ce06166a4210" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_626ac4b0-9858-4f8a-a796-09e5443cce0a" xlink:to="loc_us-gaap_OperatingSegmentsMember_9ea0c76e-cb1c-4b25-8499-ce06166a4210" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntersegmentEliminationMember_e601b00e-81bd-4dd3-83cb-5ed1d32274d3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntersegmentEliminationMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_626ac4b0-9858-4f8a-a796-09e5443cce0a" xlink:to="loc_us-gaap_IntersegmentEliminationMember_e601b00e-81bd-4dd3-83cb-5ed1d32274d3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_1db284ee-c8b6-4626-9fc7-15ca70c630a5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_ac5719f0-4a14-4c16-8ad2-d42b462646e5" xlink:to="loc_us-gaap_DisaggregationOfRevenueLineItems_1db284ee-c8b6-4626-9fc7-15ca70c630a5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_e60b55b4-c49f-4cc7-bc3f-cde3ff2d6b8f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_1db284ee-c8b6-4626-9fc7-15ca70c630a5" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_e60b55b4-c49f-4cc7-bc3f-cde3ff2d6b8f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/RevenueRecognitionSummaryofImpactofChangesInEstimatesDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#RevenueRecognitionSummaryofImpactofChangesInEstimatesDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/RevenueRecognitionSummaryofImpactofChangesInEstimatesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerAbstract_2118c8ec-2313-411c-90ff-823c1cddda69" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_be92120a-e4ed-4198-a014-1efac7ed475c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerAbstract_2118c8ec-2313-411c-90ff-823c1cddda69" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_be92120a-e4ed-4198-a014-1efac7ed475c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_bfa27267-48bb-4a79-8d2b-761b04606831" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_be92120a-e4ed-4198-a014-1efac7ed475c" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_bfa27267-48bb-4a79-8d2b-761b04606831" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_b79ad20c-ccfe-4d0b-9647-5ef385c9bac5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_bfa27267-48bb-4a79-8d2b-761b04606831" xlink:to="loc_us-gaap_SegmentDomain_b79ad20c-ccfe-4d0b-9647-5ef385c9bac5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_GovernmentOperationsSegmentMember_2f2a6911-abc0-4a7e-be03-09f94a86f2fa" xlink:href="bwxt-20251231.xsd#bwxt_GovernmentOperationsSegmentMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_b79ad20c-ccfe-4d0b-9647-5ef385c9bac5" xlink:to="loc_bwxt_GovernmentOperationsSegmentMember_2f2a6911-abc0-4a7e-be03-09f94a86f2fa" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_88c025e7-209d-4149-a65e-a7994bc59817" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_be92120a-e4ed-4198-a014-1efac7ed475c" xlink:to="loc_us-gaap_DisaggregationOfRevenueLineItems_88c025e7-209d-4149-a65e-a7994bc59817" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice_4acc1efb-de67-465f-b66e-5497525ef180" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_88c025e7-209d-4149-a65e-a7994bc59817" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice_4acc1efb-de67-465f-b66e-5497525ef180" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueModificationOfContract_7c0968b4-efff-40f1-b3dd-34737bfb23ab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueModificationOfContract"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_88c025e7-209d-4149-a65e-a7994bc59817" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueModificationOfContract_7c0968b4-efff-40f1-b3dd-34737bfb23ab" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/RevenueRecognitionAdditionalInformationDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#RevenueRecognitionAdditionalInformationDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/RevenueRecognitionAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerAbstract_4900a013-0a99-4eb5-98a1-77fc322d5e7f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_43843a22-012e-45bc-9b21-8c7f777d19b8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerAbstract_4900a013-0a99-4eb5-98a1-77fc322d5e7f" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_43843a22-012e-45bc-9b21-8c7f777d19b8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_8b7fae50-2fc6-40cd-bda2-2678640ba5d5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_43843a22-012e-45bc-9b21-8c7f777d19b8" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_8b7fae50-2fc6-40cd-bda2-2678640ba5d5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_07577ee0-25a8-41cd-9c68-30c18c4504ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_43843a22-012e-45bc-9b21-8c7f777d19b8" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_07577ee0-25a8-41cd-9c68-30c18c4504ce" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_b25be6a2-353e-4605-86c0-3eee0073a6ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_07577ee0-25a8-41cd-9c68-30c18c4504ce" xlink:to="loc_us-gaap_SegmentDomain_b25be6a2-353e-4605-86c0-3eee0073a6ed" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_GovernmentOperationsSegmentMember_3f96cb2e-d619-4462-bf9a-76f9bb157abf" xlink:href="bwxt-20251231.xsd#bwxt_GovernmentOperationsSegmentMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_b25be6a2-353e-4605-86c0-3eee0073a6ed" xlink:to="loc_bwxt_GovernmentOperationsSegmentMember_3f96cb2e-d619-4462-bf9a-76f9bb157abf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_6b052578-009a-4b0d-878c-1e5491f660e1" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MajorCustomersAxis"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_43843a22-012e-45bc-9b21-8c7f777d19b8" xlink:to="loc_srt_MajorCustomersAxis_6b052578-009a-4b0d-878c-1e5491f660e1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_f7128c9f-1ef6-4b32-99d8-c5fb946d87a2" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_MajorCustomersAxis_6b052578-009a-4b0d-878c-1e5491f660e1" xlink:to="loc_srt_NameOfMajorCustomerDomain_f7128c9f-1ef6-4b32-99d8-c5fb946d87a2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_GovernmentCustomersMember_e2b02430-2082-447d-8718-cc2c9cb0f232" xlink:href="bwxt-20251231.xsd#bwxt_GovernmentCustomersMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_NameOfMajorCustomerDomain_f7128c9f-1ef6-4b32-99d8-c5fb946d87a2" xlink:to="loc_bwxt_GovernmentCustomersMember_e2b02430-2082-447d-8718-cc2c9cb0f232" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_80c237e6-223b-4f7b-9305-63fec7c78021" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_43843a22-012e-45bc-9b21-8c7f777d19b8" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_80c237e6-223b-4f7b-9305-63fec7c78021" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueModificationOfContract_4bee0480-96de-4cba-af81-bf96f654c0f9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueModificationOfContract"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_80c237e6-223b-4f7b-9305-63fec7c78021" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueModificationOfContract_4bee0480-96de-4cba-af81-bf96f654c0f9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice_f97142af-c729-4240-b55f-805bf2f0f216" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerAssetCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_80c237e6-223b-4f7b-9305-63fec7c78021" xlink:to="loc_us-gaap_ContractWithCustomerAssetCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice_f97142af-c729-4240-b55f-805bf2f0f216" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_dc88e723-b825-4c12-84a7-8f6c7b7a25eb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_80c237e6-223b-4f7b-9305-63fec7c78021" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_dc88e723-b825-4c12-84a7-8f6c7b7a25eb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_20f76e24-8db0-4d52-a479-8bb749de148f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_80c237e6-223b-4f7b-9305-63fec7c78021" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_20f76e24-8db0-4d52-a479-8bb749de148f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_169b93fd-f6a2-40b1-8c3c-f773c48d51ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_80c237e6-223b-4f7b-9305-63fec7c78021" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_169b93fd-f6a2-40b1-8c3c-f773c48d51ce" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_e28b1706-c68e-407c-8a07-143d46af2b38" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationPercentage"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_80c237e6-223b-4f7b-9305-63fec7c78021" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_e28b1706-c68e-407c-8a07-143d46af2b38" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_c08c0807-7337-4032-88dd-3c56c16c586b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_80c237e6-223b-4f7b-9305-63fec7c78021" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_c08c0807-7337-4032-88dd-3c56c16c586b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/RevenueRecognitionRetainagesDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#RevenueRecognitionRetainagesDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/RevenueRecognitionRetainagesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerAbstract_a78392a0-64d9-409f-87f8-e4ff9ea6b3d6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_c22fe041-97a5-4762-9b70-0bf1f4446b90" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerAbstract_a78392a0-64d9-409f-87f8-e4ff9ea6b3d6" xlink:to="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_c22fe041-97a5-4762-9b70-0bf1f4446b90" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_1f019821-441f-4890-b8e6-53cb06d82a70" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_c22fe041-97a5-4762-9b70-0bf1f4446b90" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_1f019821-441f-4890-b8e6-53cb06d82a70" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_ad57e554-46e3-4386-9d16-dfd50695ad85" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BalanceSheetLocationDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_1f019821-441f-4890-b8e6-53cb06d82a70" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_ad57e554-46e3-4386-9d16-dfd50695ad85" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ContractsinProgressMember_96edd4a7-9de2-40d0-991e-b3521f116a70" xlink:href="bwxt-20251231.xsd#bwxt_ContractsinProgressMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_ad57e554-46e3-4386-9d16-dfd50695ad85" xlink:to="loc_bwxt_ContractsinProgressMember_96edd4a7-9de2-40d0-991e-b3521f116a70" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableMember_93d550da-bf98-4664-a5a5-251b34406d1f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivableMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_ad57e554-46e3-4386-9d16-dfd50695ad85" xlink:to="loc_us-gaap_AccountsReceivableMember_93d550da-bf98-4664-a5a5-251b34406d1f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_775044cf-9dce-4a35-972e-6951cd54a177" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_c22fe041-97a5-4762-9b70-0bf1f4446b90" xlink:to="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_775044cf-9dce-4a35-972e-6951cd54a177" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetCurrent_c39760f0-d24d-4eb6-8de1-44ae36b48bdc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerAssetNetCurrent"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_775044cf-9dce-4a35-972e-6951cd54a177" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetCurrent_c39760f0-d24d-4eb6-8de1-44ae36b48bdc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_eedd0547-720f-4153-8fcd-2afe0276a8bc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_775044cf-9dce-4a35-972e-6951cd54a177" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_eedd0547-720f-4153-8fcd-2afe0276a8bc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/EquityMethodInvestmentsAdditionalInformationDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#EquityMethodInvestmentsAdditionalInformationDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/EquityMethodInvestmentsAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_b17beb07-ff81-47b1-bbb6-4982c2966592" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ScheduleOfResultsRelatedToEquityAccountedInvesteesTable_48dfb1a4-f2b6-4cef-ad8d-2fbb486abdda" xlink:href="bwxt-20251231.xsd#bwxt_ScheduleOfResultsRelatedToEquityAccountedInvesteesTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_b17beb07-ff81-47b1-bbb6-4982c2966592" xlink:to="loc_bwxt_ScheduleOfResultsRelatedToEquityAccountedInvesteesTable_48dfb1a4-f2b6-4cef-ad8d-2fbb486abdda" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d59ff7df-bd49-4d44-8fab-797563161cca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ScheduleOfResultsRelatedToEquityAccountedInvesteesTable_48dfb1a4-f2b6-4cef-ad8d-2fbb486abdda" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d59ff7df-bd49-4d44-8fab-797563161cca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_e50452da-576e-46c0-bcde-39ed9dcd292b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_d59ff7df-bd49-4d44-8fab-797563161cca" xlink:to="loc_us-gaap_RelatedPartyDomain_e50452da-576e-46c0-bcde-39ed9dcd292b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvesteeMember_74d0a3c3-a09e-465a-a8ae-a5a585501b37" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvesteeMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RelatedPartyDomain_e50452da-576e-46c0-bcde-39ed9dcd292b" xlink:to="loc_us-gaap_InvesteeMember_74d0a3c3-a09e-465a-a8ae-a5a585501b37" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_471600a2-2a24-4f1e-bf89-4a1330aa16e7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RelatedPartyMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RelatedPartyDomain_e50452da-576e-46c0-bcde-39ed9dcd292b" xlink:to="loc_us-gaap_RelatedPartyMember_471600a2-2a24-4f1e-bf89-4a1330aa16e7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ScheduleOfResultsRelatedToEquityAccountedInvesteesLineItems_7607674a-233d-4dc2-a9cc-0d58850c048f" xlink:href="bwxt-20251231.xsd#bwxt_ScheduleOfResultsRelatedToEquityAccountedInvesteesLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ScheduleOfResultsRelatedToEquityAccountedInvesteesTable_48dfb1a4-f2b6-4cef-ad8d-2fbb486abdda" xlink:to="loc_bwxt_ScheduleOfResultsRelatedToEquityAccountedInvesteesLineItems_7607674a-233d-4dc2-a9cc-0d58850c048f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees_81cea927-762a-4f27-88f5-23cf857e2ea3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ScheduleOfResultsRelatedToEquityAccountedInvesteesLineItems_7607674a-233d-4dc2-a9cc-0d58850c048f" xlink:to="loc_us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees_81cea927-762a-4f27-88f5-23cf857e2ea3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_EquityMethodInvestmentsReimbursableCosts_8139d96e-fc8d-42a8-9b25-57a6411629e2" xlink:href="bwxt-20251231.xsd#bwxt_EquityMethodInvestmentsReimbursableCosts"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ScheduleOfResultsRelatedToEquityAccountedInvesteesLineItems_7607674a-233d-4dc2-a9cc-0d58850c048f" xlink:to="loc_bwxt_EquityMethodInvestmentsReimbursableCosts_8139d96e-fc8d-42a8-9b25-57a6411629e2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_56261217-1527-49c3-955b-fe3948761735" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ScheduleOfResultsRelatedToEquityAccountedInvesteesLineItems_7607674a-233d-4dc2-a9cc-0d58850c048f" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_56261217-1527-49c3-955b-fe3948761735" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherReceivablesNetCurrent_3bb98dca-73a9-43bf-b6a2-6f43f78bc115" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherReceivablesNetCurrent"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ScheduleOfResultsRelatedToEquityAccountedInvesteesLineItems_7607674a-233d-4dc2-a9cc-0d58850c048f" xlink:to="loc_us-gaap_OtherReceivablesNetCurrent_3bb98dca-73a9-43bf-b6a2-6f43f78bc115" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/EquityMethodInvestmentsSummaryofCombinedBalanceSheetInformationDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#EquityMethodInvestmentsSummaryofCombinedBalanceSheetInformationDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/EquityMethodInvestmentsSummaryofCombinedBalanceSheetInformationDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_4a032e31-20c8-43f1-8d0a-f52e45b0fea1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_730bb465-3074-475f-99e2-663287c62a62" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_4a032e31-20c8-43f1-8d0a-f52e45b0fea1" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_730bb465-3074-475f-99e2-663287c62a62" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_90a9bf19-3a0c-4399-8ee0-d0586bf444fe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_730bb465-3074-475f-99e2-663287c62a62" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_90a9bf19-3a0c-4399-8ee0-d0586bf444fe" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_3fc73a9d-50fd-4e9c-bc8c-dcdf86c155d3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_90a9bf19-3a0c-4399-8ee0-d0586bf444fe" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_3fc73a9d-50fd-4e9c-bc8c-dcdf86c155d3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvesteeMember_e814b4ae-e805-491d-b357-fc9a028ed078" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvesteeMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_3fc73a9d-50fd-4e9c-bc8c-dcdf86c155d3" xlink:to="loc_us-gaap_EquityMethodInvesteeMember_e814b4ae-e805-491d-b357-fc9a028ed078" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_39e2aaa4-e1a2-448f-a504-2f7ce78307c6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_730bb465-3074-475f-99e2-663287c62a62" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_39e2aaa4-e1a2-448f-a504-2f7ce78307c6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_f6bfba4e-20a5-4c14-bc56-9de371d4036f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_39e2aaa4-e1a2-448f-a504-2f7ce78307c6" xlink:to="loc_us-gaap_AssetsCurrent_f6bfba4e-20a5-4c14-bc56-9de371d4036f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsNoncurrent_b4798611-6186-4763-8571-bef109c085c9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsNoncurrent"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_39e2aaa4-e1a2-448f-a504-2f7ce78307c6" xlink:to="loc_us-gaap_AssetsNoncurrent_b4798611-6186-4763-8571-bef109c085c9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_0209d249-8924-4573-b374-fc970b2e5dda" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_39e2aaa4-e1a2-448f-a504-2f7ce78307c6" xlink:to="loc_us-gaap_Assets_0209d249-8924-4573-b374-fc970b2e5dda" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019c8b3a-758c-77c8-82f2-cac62a75a633" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_39e2aaa4-e1a2-448f-a504-2f7ce78307c6" xlink:to="loc_us-gaap_Liabilities_019c8b3a-758c-77c8-82f2-cac62a75a633" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_bc1c9804-3028-41e8-8b20-9decb6d28c7f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_39e2aaa4-e1a2-448f-a504-2f7ce78307c6" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_bc1c9804-3028-41e8-8b20-9decb6d28c7f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_79733c42-fcfd-4436-8cf5-4e57ee9171ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_39e2aaa4-e1a2-448f-a504-2f7ce78307c6" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_79733c42-fcfd-4436-8cf5-4e57ee9171ce" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/EquityMethodInvestmentsSummaryofCombinedIncomeStatementInformationDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#EquityMethodInvestmentsSummaryofCombinedIncomeStatementInformationDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/EquityMethodInvestmentsSummaryofCombinedIncomeStatementInformationDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_8e691c42-7232-4d43-8b8b-7d4cffa033f1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_354347da-aaea-46bf-b40a-f1b501003b70" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_8e691c42-7232-4d43-8b8b-7d4cffa033f1" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_354347da-aaea-46bf-b40a-f1b501003b70" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_5a4ed9b7-5815-4562-bad1-d1fe20e6ca92" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_354347da-aaea-46bf-b40a-f1b501003b70" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_5a4ed9b7-5815-4562-bad1-d1fe20e6ca92" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_6fbcc095-a781-4dc0-afac-921f13de9a2f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_5a4ed9b7-5815-4562-bad1-d1fe20e6ca92" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_6fbcc095-a781-4dc0-afac-921f13de9a2f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvesteeMember_a338d7bc-16a2-4b77-9149-0b17c043c582" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvesteeMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_6fbcc095-a781-4dc0-afac-921f13de9a2f" xlink:to="loc_us-gaap_EquityMethodInvesteeMember_a338d7bc-16a2-4b77-9149-0b17c043c582" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_998858ce-7262-4bd9-b243-8403efe35368" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_354347da-aaea-46bf-b40a-f1b501003b70" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_998858ce-7262-4bd9-b243-8403efe35368" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_735af8bf-bd04-46d0-a69b-af8bd1ff47c6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Revenues"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_998858ce-7262-4bd9-b243-8403efe35368" xlink:to="loc_us-gaap_Revenues_735af8bf-bd04-46d0-a69b-af8bd1ff47c6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_cb4da230-4c96-4663-a479-b532b0d7b7f4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GrossProfit"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_998858ce-7262-4bd9-b243-8403efe35368" xlink:to="loc_us-gaap_GrossProfit_cb4da230-4c96-4663-a479-b532b0d7b7f4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_c1a3837c-473b-4181-847b-afb2c7964543" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfitLoss"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_998858ce-7262-4bd9-b243-8403efe35368" xlink:to="loc_us-gaap_ProfitLoss_c1a3837c-473b-4181-847b-afb2c7964543" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/EquityMethodInvestmentsReconciliationofNetIncometoEquityinIncomeDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#EquityMethodInvestmentsReconciliationofNetIncometoEquityinIncomeDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/EquityMethodInvestmentsReconciliationofNetIncometoEquityinIncomeDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_c582c141-d191-4cc7-8e96-acfbef7d2304" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets_77ff24d2-affb-4822-b6c7-e0b738fde83a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_c582c141-d191-4cc7-8e96-acfbef7d2304" xlink:to="loc_us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets_77ff24d2-affb-4822-b6c7-e0b738fde83a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity_e74ca08a-2c27-4bdf-a91d-91c1ec9fae8c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_c582c141-d191-4cc7-8e96-acfbef7d2304" xlink:to="loc_us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity_e74ca08a-2c27-4bdf-a91d-91c1ec9fae8c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_81de3134-6860-42ce-832e-d58ba018647f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_c582c141-d191-4cc7-8e96-acfbef7d2304" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_81de3134-6860-42ce-832e-d58ba018647f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/EquityMethodInvestmentsScheduleofTransactionswithUnconsolidatedAffiliatesDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#EquityMethodInvestmentsScheduleofTransactionswithUnconsolidatedAffiliatesDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/EquityMethodInvestmentsScheduleofTransactionswithUnconsolidatedAffiliatesDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_899775c0-d02c-4292-8cdb-05040d55d5cc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfEquityMethodInvestments_61cccaf3-4ca9-4a1c-835b-6ae5b90c784d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleOfEquityMethodInvestments"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_899775c0-d02c-4292-8cdb-05040d55d5cc" xlink:to="loc_us-gaap_ProceedsFromSaleOfEquityMethodInvestments_61cccaf3-4ca9-4a1c-835b-6ae5b90c784d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentDividendsOrDistributions_f9ab5a25-bf26-4c10-a7b2-f9d71c65ca0a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityMethodInvestmentDividendsOrDistributions"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_899775c0-d02c-4292-8cdb-05040d55d5cc" xlink:to="loc_us-gaap_EquityMethodInvestmentDividendsOrDistributions_f9ab5a25-bf26-4c10-a7b2-f9d71c65ca0a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_PaymentsToEquityMethodInvestmentsNetOfReturnOfCapital_984ba8d5-6381-4749-b71d-c2ba34f26f58" xlink:href="bwxt-20251231.xsd#bwxt_PaymentsToEquityMethodInvestmentsNetOfReturnOfCapital"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_899775c0-d02c-4292-8cdb-05040d55d5cc" xlink:to="loc_bwxt_PaymentsToEquityMethodInvestmentsNetOfReturnOfCapital_984ba8d5-6381-4749-b71d-c2ba34f26f58" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/IncomeTaxesReconciliationofUnrecognizedTaxBenefitsDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#IncomeTaxesReconciliationofUnrecognizedTaxBenefitsDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/IncomeTaxesReconciliationofUnrecognizedTaxBenefitsDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_6f888392-1825-43cf-906e-24382ec11fa1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d30772e4-457e-43af-ac61-113315c28124" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_6f888392-1825-43cf-906e-24382ec11fa1" xlink:to="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d30772e4-457e-43af-ac61-113315c28124" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_f2f1b9e1-adc2-4d30-bbbc-ab0dea112f6e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnrecognizedTaxBenefits"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d30772e4-457e-43af-ac61-113315c28124" xlink:to="loc_us-gaap_UnrecognizedTaxBenefits_f2f1b9e1-adc2-4d30-bbbc-ab0dea112f6e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions_0c4bfe14-c84d-4973-9f9f-eb7c31978e17" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d30772e4-457e-43af-ac61-113315c28124" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions_0c4bfe14-c84d-4973-9f9f-eb7c31978e17" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions_d6940cd6-c502-4976-bc72-464e75b35d04" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d30772e4-457e-43af-ac61-113315c28124" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions_d6940cd6-c502-4976-bc72-464e75b35d04" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions_b7125b33-4633-4d8d-ac74-c9e1fb2fd1cf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d30772e4-457e-43af-ac61-113315c28124" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions_b7125b33-4633-4d8d-ac74-c9e1fb2fd1cf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_8e94d6f5-37fa-455f-8576-e71b6d4b1ba9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d30772e4-457e-43af-ac61-113315c28124" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_8e94d6f5-37fa-455f-8576-e71b6d4b1ba9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations_019be6e4-6614-7bdf-8299-0865e72c1fa2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d30772e4-457e-43af-ac61-113315c28124" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations_019be6e4-6614-7bdf-8299-0865e72c1fa2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_UnrecognizedTaxBenefitsOtherPeriodIncreaseDecrease_019be6e5-6cf2-7e40-822b-0bbc36a54a10" xlink:href="bwxt-20251231.xsd#bwxt_UnrecognizedTaxBenefitsOtherPeriodIncreaseDecrease"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d30772e4-457e-43af-ac61-113315c28124" xlink:to="loc_bwxt_UnrecognizedTaxBenefitsOtherPeriodIncreaseDecrease_019be6e5-6cf2-7e40-822b-0bbc36a54a10" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_6f95fcb3-4504-4a86-bf16-c6d3f599ab76" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnrecognizedTaxBenefits"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward_d30772e4-457e-43af-ac61-113315c28124" xlink:to="loc_us-gaap_UnrecognizedTaxBenefits_6f95fcb3-4504-4a86-bf16-c6d3f599ab76" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/IncomeTaxesAdditionalInformationDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#IncomeTaxesAdditionalInformationDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/IncomeTaxesAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_16e569a1-47b8-4947-8d2e-98a96d6b1f02" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxContingencyTable_865a4959-9ef7-461c-a539-465d0fc87438" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxContingencyTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_16e569a1-47b8-4947-8d2e-98a96d6b1f02" xlink:to="loc_us-gaap_IncomeTaxContingencyTable_865a4959-9ef7-461c-a539-465d0fc87438" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_74166e7a-089a-4aaa-9657-842a92c28e88" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyTable_865a4959-9ef7-461c-a539-465d0fc87438" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_74166e7a-089a-4aaa-9657-842a92c28e88" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_b775f230-5f2a-41ba-aa78-2e743b2a043c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_74166e7a-089a-4aaa-9657-842a92c28e88" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_b775f230-5f2a-41ba-aa78-2e743b2a043c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_019c671b-51b5-731c-b9db-84b16e51a80a" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_b775f230-5f2a-41ba-aa78-2e743b2a043c" xlink:to="loc_country_US_019c671b-51b5-731c-b9db-84b16e51a80a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StateAndLocalTaxJurisdictionOtherMember_019c671c-2502-7ae2-9988-78aeee517c2d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StateAndLocalTaxJurisdictionOtherMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_b775f230-5f2a-41ba-aa78-2e743b2a043c" xlink:to="loc_us-gaap_StateAndLocalTaxJurisdictionOtherMember_019c671c-2502-7ae2-9988-78aeee517c2d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxContingencyLineItems_8192fe81-65df-435f-a083-dc7338717ea3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxContingencyLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyTable_865a4959-9ef7-461c-a539-465d0fc87438" xlink:to="loc_us-gaap_IncomeTaxContingencyLineItems_8192fe81-65df-435f-a083-dc7338717ea3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_a10486d7-4524-4b2b-9d1a-305f6b786e01" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnrecognizedTaxBenefits"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_8192fe81-65df-435f-a083-dc7338717ea3" xlink:to="loc_us-gaap_UnrecognizedTaxBenefits_a10486d7-4524-4b2b-9d1a-305f6b786e01" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_05567cc5-3eed-400d-90bd-8e7da32f2e17" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_8192fe81-65df-435f-a083-dc7338717ea3" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_05567cc5-3eed-400d-90bd-8e7da32f2e17" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_019c671a-a157-7df4-b9c9-ba0275d10302" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_8192fe81-65df-435f-a083-dc7338717ea3" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_019c671a-a157-7df4-b9c9-ba0275d10302" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwards_ad62b3cb-41d8-4bc9-9e13-b713220b9379" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLossCarryforwards"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_8192fe81-65df-435f-a083-dc7338717ea3" xlink:to="loc_us-gaap_OperatingLossCarryforwards_ad62b3cb-41d8-4bc9-9e13-b713220b9379" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsValuationAllowance_275537e9-67b6-4512-a26d-9ac24a685334" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLossCarryforwardsValuationAllowance"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_8192fe81-65df-435f-a083-dc7338717ea3" xlink:to="loc_us-gaap_OperatingLossCarryforwardsValuationAllowance_275537e9-67b6-4512-a26d-9ac24a685334" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/IncomeTaxesComponentsofDeferredTaxAssetsandLiabilitiesDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#IncomeTaxesComponentsofDeferredTaxAssetsandLiabilitiesDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/IncomeTaxesComponentsofDeferredTaxAssetsandLiabilitiesDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_95a16cd3-7f4e-40da-baee-e916853141ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComponentsOfDeferredTaxAssetsAbstract"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_95a16cd3-7f4e-40da-baee-e916853141ed" xlink:to="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions_ddd64863-a5f2-4131-b6d1-743aaf0a7d54" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions_ddd64863-a5f2-4131-b6d1-743aaf0a7d54" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves_ddbf757b-69d3-47a2-9a8a-9b303e9efa39" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves_ddbf757b-69d3-47a2-9a8a-9b303e9efa39" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch_0dd61a9e-a13a-4574-b25b-71d60229a824" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch_0dd61a9e-a13a-4574-b25b-71d60229a824" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences_6efe9ca7-f130-43ce-9924-f57e2934a6a4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences_6efe9ca7-f130-43ce-9924-f57e2934a6a4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities_b9f394ba-1457-4d87-b750-063441cf8ac1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities_b9f394ba-1457-4d87-b750-063441cf8ac1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DeferredTaxAssetsEnvironmentalAndProductsLiabilities_5d07fc91-48ba-49d2-9083-d29aceeb207b" xlink:href="bwxt-20251231.xsd#bwxt_DeferredTaxAssetsEnvironmentalAndProductsLiabilities"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:to="loc_bwxt_DeferredTaxAssetsEnvironmentalAndProductsLiabilities_5d07fc91-48ba-49d2-9083-d29aceeb207b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DeferredTaxAssetsLeaseLiabilities_c97886fe-b2e0-44b0-b71d-0e4495f0faec" xlink:href="bwxt-20251231.xsd#bwxt_DeferredTaxAssetsLeaseLiabilities"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:to="loc_bwxt_DeferredTaxAssetsLeaseLiabilities_c97886fe-b2e0-44b0-b71d-0e4495f0faec" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsEquityMethodInvestments_40b6825b-4a62-4808-bf65-f7bfa3052550" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsEquityMethodInvestments"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:to="loc_us-gaap_DeferredTaxAssetsEquityMethodInvestments_40b6825b-4a62-4808-bf65-f7bfa3052550" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DeferredTaxAssetsConvertibleDebtPremium_e3771ff1-b77d-47a5-b154-eb13ff8f2357" xlink:href="bwxt-20251231.xsd#bwxt_DeferredTaxAssetsConvertibleDebtPremium"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:to="loc_bwxt_DeferredTaxAssetsConvertibleDebtPremium_e3771ff1-b77d-47a5-b154-eb13ff8f2357" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic_07ad3a34-007a-49a1-9c96-d58f21138658" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic_07ad3a34-007a-49a1-9c96-d58f21138658" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal_2886f8fe-3e87-4eb5-9bef-73cea4ef8bcb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal_2886f8fe-3e87-4eb5-9bef-73cea4ef8bcb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_f51d029a-3e5a-4ee6-a562-ed6428a7d7be" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwards"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_f51d029a-3e5a-4ee6-a562-ed6428a7d7be" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOther_340084d2-4d80-4894-8c6c-bc3baa069fb9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsOther"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:to="loc_us-gaap_DeferredTaxAssetsOther_340084d2-4d80-4894-8c6c-bc3baa069fb9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsGross_8c1f7aa2-7e0a-441f-ab70-00315a28d130" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsGross"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:to="loc_us-gaap_DeferredTaxAssetsGross_8c1f7aa2-7e0a-441f-ab70-00315a28d130" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_b2ad6b39-b784-4407-b500-84da7762ebc6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_b2ad6b39-b784-4407-b500-84da7762ebc6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_bcbcaac8-580e-4e75-b3b1-30c83c041d83" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsNet"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxAssetsAbstract_0eaf4741-fb94-4de3-9e4e-69f82ea24d6d" xlink:to="loc_us-gaap_DeferredTaxAssetsNet_bcbcaac8-580e-4e75-b3b1-30c83c041d83" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_f337709b-d465-4960-82de-0742832085bb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_95a16cd3-7f4e-40da-baee-e916853141ed" xlink:to="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_f337709b-d465-4960-82de-0742832085bb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_72da8ee9-7736-45fc-9057-930d4e074d6b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_f337709b-d465-4960-82de-0742832085bb" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_72da8ee9-7736-45fc-9057-930d4e074d6b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DeferredTaxLiabilitiesLongTermContracts_5d9bbc62-033e-49c9-8c47-0cf47c45f9cc" xlink:href="bwxt-20251231.xsd#bwxt_DeferredTaxLiabilitiesLongTermContracts"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_f337709b-d465-4960-82de-0742832085bb" xlink:to="loc_bwxt_DeferredTaxLiabilitiesLongTermContracts_5d9bbc62-033e-49c9-8c47-0cf47c45f9cc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DeferredTaxLiabilitiesRightOfUseAssets_0a8d2b82-1a7d-492c-9e21-18fdc07a91db" xlink:href="bwxt-20251231.xsd#bwxt_DeferredTaxLiabilitiesRightOfUseAssets"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_f337709b-d465-4960-82de-0742832085bb" xlink:to="loc_bwxt_DeferredTaxLiabilitiesRightOfUseAssets_0a8d2b82-1a7d-492c-9e21-18fdc07a91db" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DeferredTaxLiabilitiesAccruedLiabilitiesForSelfInsurance_278b0174-a14e-4d81-abad-44146f987bf5" xlink:href="bwxt-20251231.xsd#bwxt_DeferredTaxLiabilitiesAccruedLiabilitiesForSelfInsurance"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_f337709b-d465-4960-82de-0742832085bb" xlink:to="loc_bwxt_DeferredTaxLiabilitiesAccruedLiabilitiesForSelfInsurance_278b0174-a14e-4d81-abad-44146f987bf5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets_85c7d319-3389-48c2-ba47-6404baa42dc6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_f337709b-d465-4960-82de-0742832085bb" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets_85c7d319-3389-48c2-ba47-6404baa42dc6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_b4f098da-7aca-43e3-9f8c-f7fc09354f86" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxLiabilities"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract_f337709b-d465-4960-82de-0742832085bb" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilities_b4f098da-7aca-43e3-9f8c-f7fc09354f86" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilities_ad3b7d55-4e3b-4a5b-ac54-aaee5613f9b2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxLiabilities"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_95a16cd3-7f4e-40da-baee-e916853141ed" xlink:to="loc_us-gaap_DeferredTaxLiabilities_ad3b7d55-4e3b-4a5b-ac54-aaee5613f9b2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTotalLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/IncomeTaxesIncomefromContinuingOperationsBeforeProvisionforIncomeTaxesDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#IncomeTaxesIncomefromContinuingOperationsBeforeProvisionforIncomeTaxesDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/IncomeTaxesIncomefromContinuingOperationsBeforeProvisionforIncomeTaxesDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_60ebf983-a4b6-4e02-9374-2927d85682e9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_6baf6d10-576d-4d66-8565-7b9395c34451" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_60ebf983-a4b6-4e02-9374-2927d85682e9" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_6baf6d10-576d-4d66-8565-7b9395c34451" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_8c6d55c7-ba99-4d84-978f-84df41bdfd77" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_60ebf983-a4b6-4e02-9374-2927d85682e9" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_8c6d55c7-ba99-4d84-978f-84df41bdfd77" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1463b577-cbac-4c4b-9660-22df16749273" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_60ebf983-a4b6-4e02-9374-2927d85682e9" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1463b577-cbac-4c4b-9660-22df16749273" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/IncomeTaxesComponentsofIncomeTaxProvisionfromContinuingOperationsDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#IncomeTaxesComponentsofIncomeTaxProvisionfromContinuingOperationsDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/IncomeTaxesComponentsofIncomeTaxProvisionfromContinuingOperationsDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_777bffdc-c120-4e7c-b2ed-d614941c39e3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefitAbstract_f32b505e-786d-4ac8-be65-62ba9819b03a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefitAbstract"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_777bffdc-c120-4e7c-b2ed-d614941c39e3" xlink:to="loc_us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefitAbstract_f32b505e-786d-4ac8-be65-62ba9819b03a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentFederalTaxExpenseBenefit_481fc82c-ba15-48f4-b1ec-826ee8c296fc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CurrentFederalTaxExpenseBenefit"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefitAbstract_f32b505e-786d-4ac8-be65-62ba9819b03a" xlink:to="loc_us-gaap_CurrentFederalTaxExpenseBenefit_481fc82c-ba15-48f4-b1ec-826ee8c296fc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_8c1e560e-ba17-4988-9012-831db59978b6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefitAbstract_f32b505e-786d-4ac8-be65-62ba9819b03a" xlink:to="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_8c1e560e-ba17-4988-9012-831db59978b6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentForeignTaxExpenseBenefit_37e29fa3-2500-47dc-9521-8443b05a9413" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CurrentForeignTaxExpenseBenefit"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefitAbstract_f32b505e-786d-4ac8-be65-62ba9819b03a" xlink:to="loc_us-gaap_CurrentForeignTaxExpenseBenefit_37e29fa3-2500-47dc-9521-8443b05a9413" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_cf3618a7-2407-4240-bc0c-d7cac2998fbc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefitAbstract_f32b505e-786d-4ac8-be65-62ba9819b03a" xlink:to="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_cf3618a7-2407-4240-bc0c-d7cac2998fbc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFederalStateAndLocalTaxExpenseBenefitAbstract_f4fc6c74-0cbf-4e6d-ac1f-13da34424e88" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredFederalStateAndLocalTaxExpenseBenefitAbstract"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_777bffdc-c120-4e7c-b2ed-d614941c39e3" xlink:to="loc_us-gaap_DeferredFederalStateAndLocalTaxExpenseBenefitAbstract_f4fc6c74-0cbf-4e6d-ac1f-13da34424e88" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_cde5764d-fb9a-4649-b6d4-be61c9e48991" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DeferredFederalStateAndLocalTaxExpenseBenefitAbstract_f4fc6c74-0cbf-4e6d-ac1f-13da34424e88" xlink:to="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_cde5764d-fb9a-4649-b6d4-be61c9e48991" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_fcc89b6d-8558-42fe-95e3-eb7e19ba5344" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DeferredFederalStateAndLocalTaxExpenseBenefitAbstract_f4fc6c74-0cbf-4e6d-ac1f-13da34424e88" xlink:to="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_fcc89b6d-8558-42fe-95e3-eb7e19ba5344" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_58b827d4-2e7a-464d-a58f-6fdb73a751e2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredForeignIncomeTaxExpenseBenefit"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DeferredFederalStateAndLocalTaxExpenseBenefitAbstract_f4fc6c74-0cbf-4e6d-ac1f-13da34424e88" xlink:to="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_58b827d4-2e7a-464d-a58f-6fdb73a751e2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_9b62cc82-9bab-4d30-8264-49b064085324" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DeferredFederalStateAndLocalTaxExpenseBenefitAbstract_f4fc6c74-0cbf-4e6d-ac1f-13da34424e88" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_9b62cc82-9bab-4d30-8264-49b064085324" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_6916f0c5-bdbf-4500-a17b-fd5143270a9c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_777bffdc-c120-4e7c-b2ed-d614941c39e3" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_6916f0c5-bdbf-4500-a17b-fd5143270a9c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/IncomeTaxesReconciliationoftheIncomeTaxProvisionRelatedtoContinuingOperationsfromtheUSStatutoryFederalTaxRate2025Details" xlink:type="simple" xlink:href="bwxt-20251231.xsd#IncomeTaxesReconciliationoftheIncomeTaxProvisionRelatedtoContinuingOperationsfromtheUSStatutoryFederalTaxRate2025Details"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/IncomeTaxesReconciliationoftheIncomeTaxProvisionRelatedtoContinuingOperationsfromtheUSStatutoryFederalTaxRate2025Details" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_019be6f2-4c97-76b8-857a-ef0489e181c6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTable_019be6f2-4c97-73e2-b6c5-69cb9a2c9165" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_019be6f2-4c97-76b8-857a-ef0489e181c6" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTable_019be6f2-4c97-73e2-b6c5-69cb9a2c9165" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_019be6f2-4c97-76cf-970e-21fcb493b8dc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTable_019be6f2-4c97-73e2-b6c5-69cb9a2c9165" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_019be6f2-4c97-76cf-970e-21fcb493b8dc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_019be6f2-4c97-7a1e-92fe-bf36e86a68f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_019be6f2-4c97-76cf-970e-21fcb493b8dc" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_019be6f2-4c97-7a1e-92fe-bf36e86a68f0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignTaxJurisdictionOtherMember_019be6f2-4c97-7a6a-b8a6-6068b0998d87" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignTaxJurisdictionOtherMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_019be6f2-4c97-7a1e-92fe-bf36e86a68f0" xlink:to="loc_us-gaap_ForeignTaxJurisdictionOtherMember_019be6f2-4c97-7a6a-b8a6-6068b0998d87" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CA_019be6f2-4c97-73fc-bd20-ff24f09709c8" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CA"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_019be6f2-4c97-7a1e-92fe-bf36e86a68f0" xlink:to="loc_country_CA_019be6f2-4c97-73fc-bd20-ff24f09709c8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_019be6f2-4c97-7ea3-9459-cd009ad4c32c" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_019be6f2-4c97-7a1e-92fe-bf36e86a68f0" xlink:to="loc_country_US_019be6f2-4c97-7ea3-9459-cd009ad4c32c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationLineItems_019be6f2-4c97-7984-a7de-092fc3e611e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTable_019be6f2-4c97-73e2-b6c5-69cb9a2c9165" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationLineItems_019be6f2-4c97-7984-a7de-092fc3e611e5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_019be6f2-c477-7e42-b363-3237935a9ad3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationLineItems_019be6f2-4c97-7984-a7de-092fc3e611e5" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_019be6f2-c477-7e42-b363-3237935a9ad3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019be6f2-4c97-7284-9c80-62870c5a28d2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_019be6f2-c477-7e42-b363-3237935a9ad3" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019be6f2-4c97-7284-9c80-62870c5a28d2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_019be6f2-4c97-797f-8058-59a9d0b9402a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_019be6f2-c477-7e42-b363-3237935a9ad3" xlink:to="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_019be6f2-4c97-797f-8058-59a9d0b9402a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_019be6f2-4c97-72e5-b4f4-dfef39c0ede1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_019be6f2-c477-7e42-b363-3237935a9ad3" xlink:to="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_019be6f2-4c97-72e5-b4f4-dfef39c0ede1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential_019be6f2-4c97-7f09-8b3d-6288a4df42f1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_019be6f2-c477-7e42-b363-3237935a9ad3" xlink:to="loc_us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential_019be6f2-4c97-7f09-8b3d-6288a4df42f1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_019be6f2-4c97-7bd1-b872-66985607e17a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationOtherAdjustments"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_019be6f2-c477-7e42-b363-3237935a9ad3" xlink:to="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_019be6f2-4c97-7bd1-b872-66985607e17a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_019be6f2-4c97-7e80-be57-d2bd3f8b45c6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_019be6f2-c477-7e42-b363-3237935a9ad3" xlink:to="loc_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate_019be6f2-4c97-7e80-be57-d2bd3f8b45c6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectAmount_019be6f2-4c97-7105-90ce-f14c93cd2e4b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectAmount"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_019be6f2-c477-7e42-b363-3237935a9ad3" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectAmount_019be6f2-4c97-7105-90ce-f14c93cd2e4b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxCreditsResearch_019be6f2-4c97-7b3c-bb53-3d0f2120a565" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationTaxCreditsResearch"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_019be6f2-c477-7e42-b363-3237935a9ad3" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxCreditsResearch_019be6f2-4c97-7b3c-bb53-3d0f2120a565" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpense_019be6f2-4c97-7ac8-946d-b5f82d67556c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpense"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_019be6f2-c477-7e42-b363-3237935a9ad3" xlink:to="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpense_019be6f2-4c97-7ac8-946d-b5f82d67556c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxContingencies_019be6f2-4c97-7033-aa66-1eb91b0e06c2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationTaxContingencies"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_019be6f2-c477-7e42-b363-3237935a9ad3" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxContingencies_019be6f2-4c97-7033-aa66-1eb91b0e06c2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019be6f2-4c97-73da-802f-b5e6b942d98f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefitContinuingOperationsIncomeTaxReconciliationAbstract_019be6f2-c477-7e42-b363-3237935a9ad3" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019be6f2-4c97-73da-802f-b5e6b942d98f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_019be6f3-03c2-70e5-bbd5-20fabab16d45" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateReconciliationLineItems_019be6f2-4c97-7984-a7de-092fc3e611e5" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_019be6f3-03c2-70e5-bbd5-20fabab16d45" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_019be6f2-4c97-749b-b3b8-e5fec69a7b17" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_019be6f3-03c2-70e5-bbd5-20fabab16d45" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_019be6f2-4c97-749b-b3b8-e5fec69a7b17" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_019be6f2-4c97-7881-8b4e-06374c216a40" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_019be6f3-03c2-70e5-bbd5-20fabab16d45" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_019be6f2-4c97-7881-8b4e-06374c216a40" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential_019c34be-ea2d-7ddd-94e5-12558f61eb5b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_019be6f3-03c2-70e5-bbd5-20fabab16d45" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential_019c34be-ea2d-7ddd-94e5-12558f61eb5b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_019be6f2-4c97-7aec-9044-d7715cae573d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_019be6f3-03c2-70e5-bbd5-20fabab16d45" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_019be6f2-4c97-7aec-9044-d7715cae573d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_019be6f2-4c97-7be7-86c9-eb9c0f48241f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_019be6f3-03c2-70e5-bbd5-20fabab16d45" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate_019be6f2-4c97-7be7-86c9-eb9c0f48241f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectPercent_019be6f2-4c97-7109-98f7-7cadd74e6bcf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectPercent"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_019be6f3-03c2-70e5-bbd5-20fabab16d45" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectPercent_019be6f2-4c97-7109-98f7-7cadd74e6bcf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch_019be6f2-4c97-7954-ac5c-ecf576c5d47a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_019be6f3-03c2-70e5-bbd5-20fabab16d45" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch_019be6f2-4c97-7954-ac5c-ecf576c5d47a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense_019be6f2-4c97-77cb-ab3c-26cc4b3fc206" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_019be6f3-03c2-70e5-bbd5-20fabab16d45" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense_019be6f2-4c97-77cb-ab3c-26cc4b3fc206" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies_019be6f2-4c97-70c7-a71a-65dcc6b76ac9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_019be6f3-03c2-70e5-bbd5-20fabab16d45" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies_019be6f2-4c97-70c7-a71a-65dcc6b76ac9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019be6f2-4c97-7f1e-84e9-17010cfa7a0e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperationsTaxRateReconciliationAbstract_019be6f3-03c2-70e5-bbd5-20fabab16d45" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019be6f2-4c97-7f1e-84e9-17010cfa7a0e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/IncomeTaxesReconciliationoftheIncomeTaxProvisionRelatedtoContinuingOperationsfromtheUSStatutoryFederalTaxRateDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#IncomeTaxesReconciliationoftheIncomeTaxProvisionRelatedtoContinuingOperationsfromtheUSStatutoryFederalTaxRateDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/IncomeTaxesReconciliationoftheIncomeTaxProvisionRelatedtoContinuingOperationsfromtheUSStatutoryFederalTaxRateDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_9f577652-275b-414b-96c7-5910efe54164" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_6113126b-7116-40e4-81b8-6cace7eee020" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_9f577652-275b-414b-96c7-5910efe54164" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_6113126b-7116-40e4-81b8-6cace7eee020" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_9fba898a-f581-4eb7-be0c-0c8f84edbe07" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_9f577652-275b-414b-96c7-5910efe54164" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_9fba898a-f581-4eb7-be0c-0c8f84edbe07" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch_bb1aa6b5-0c8e-4e27-91c8-46fddf214f38" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_9f577652-275b-414b-96c7-5910efe54164" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch_bb1aa6b5-0c8e-4e27-91c8-46fddf214f38" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits_55a76e22-999d-446f-ade4-69e3e0684a56" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_9f577652-275b-414b-96c7-5910efe54164" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits_55a76e22-999d-446f-ade4-69e3e0684a56" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_60e8c940-6339-404c-be8a-86ebfa4c85ec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_9f577652-275b-414b-96c7-5910efe54164" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_60e8c940-6339-404c-be8a-86ebfa4c85ec" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_78a22ce3-3df4-41b3-9f3c-d18a92d23ae7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_9f577652-275b-414b-96c7-5910efe54164" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_78a22ce3-3df4-41b3-9f3c-d18a92d23ae7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/IncomeTaxesIncomeTaxesPaidDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#IncomeTaxesIncomeTaxesPaidDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/IncomeTaxesIncomeTaxesPaidDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_019be6f7-4c7a-7c29-8c2f-0064d5f0e9e6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionTable_019be6f7-4c7a-7524-bf9a-c0762bfd08a2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxPaidByIndividualJurisdictionTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_019be6f7-4c7a-7c29-8c2f-0064d5f0e9e6" xlink:to="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionTable_019be6f7-4c7a-7524-bf9a-c0762bfd08a2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_019be6f7-4c7a-7cf2-9425-d69a6ea0370d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionTable_019be6f7-4c7a-7524-bf9a-c0762bfd08a2" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_019be6f7-4c7a-7cf2-9425-d69a6ea0370d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_019be6f7-4c7a-7438-979c-276128499d64" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_019be6f7-4c7a-7cf2-9425-d69a6ea0370d" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_019be6f7-4c7a-7438-979c-276128499d64" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CA_019be6f7-4c7a-7c50-907e-55e3957317e8" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CA"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_019be6f7-4c7a-7438-979c-276128499d64" xlink:to="loc_country_CA_019be6f7-4c7a-7c50-907e-55e3957317e8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignTaxJurisdictionOtherMember_019be6f7-4c7a-7a49-b72c-2278c0ffb6e3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignTaxJurisdictionOtherMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_019be6f7-4c7a-7438-979c-276128499d64" xlink:to="loc_us-gaap_ForeignTaxJurisdictionOtherMember_019be6f7-4c7a-7a49-b72c-2278c0ffb6e3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionLineItems_019be6f7-4c7a-7e22-8f54-d0f1b978557d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxPaidByIndividualJurisdictionLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionTable_019be6f7-4c7a-7524-bf9a-c0762bfd08a2" xlink:to="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionLineItems_019be6f7-4c7a-7e22-8f54-d0f1b978557d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxPaidFederalAfterRefundReceived_019be6f7-4c7a-7d41-a3d7-f03e17a4ec62" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxPaidFederalAfterRefundReceived"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionLineItems_019be6f7-4c7a-7e22-8f54-d0f1b978557d" xlink:to="loc_us-gaap_IncomeTaxPaidFederalAfterRefundReceived_019be6f7-4c7a-7d41-a3d7-f03e17a4ec62" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxPaidStateAndLocalAfterRefundReceived_019be6f7-4c7a-7d40-962d-2cedc6461e90" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxPaidStateAndLocalAfterRefundReceived"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionLineItems_019be6f7-4c7a-7e22-8f54-d0f1b978557d" xlink:to="loc_us-gaap_IncomeTaxPaidStateAndLocalAfterRefundReceived_019be6f7-4c7a-7d40-962d-2cedc6461e90" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxPaidForeignAfterRefundReceived_019be6f7-4c7a-79f2-8646-675142d37a94" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxPaidForeignAfterRefundReceived"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionLineItems_019be6f7-4c7a-7e22-8f54-d0f1b978557d" xlink:to="loc_us-gaap_IncomeTaxPaidForeignAfterRefundReceived_019be6f7-4c7a-79f2-8646-675142d37a94" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesPaidNet_019be6f7-4c7a-794f-a2b8-34280783f9af" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxesPaidNet"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxPaidByIndividualJurisdictionLineItems_019be6f7-4c7a-7e22-8f54-d0f1b978557d" xlink:to="loc_us-gaap_IncomeTaxesPaidNet_019be6f7-4c7a-794f-a2b8-34280783f9af" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/IncomeTaxesValuationAllowanceforDeferredTaxAssetsDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#IncomeTaxesValuationAllowanceforDeferredTaxAssetsDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/IncomeTaxesValuationAllowanceforDeferredTaxAssetsDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_7bd5dc58-f113-4e32-95ad-5a751bcc2396" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_00a445bd-2398-4908-8e2a-602a0433f874" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ValuationAndQualifyingAccountsDisclosureTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_7bd5dc58-f113-4e32-95ad-5a751bcc2396" xlink:to="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_00a445bd-2398-4908-8e2a-602a0433f874" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_e91c1e5e-fa57-4147-a10f-5fabea676215" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_00a445bd-2398-4908-8e2a-602a0433f874" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_e91c1e5e-fa57-4147-a10f-5fabea676215" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_3efec11e-9ce6-4aa5-ad9c-02807c2d5bae" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ValuationAllowancesAndReservesDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_e91c1e5e-fa57-4147-a10f-5fabea676215" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_3efec11e-9ce6-4aa5-ad9c-02807c2d5bae" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember_20888e17-aecf-4618-9b59-d5e6a1618f4f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_3efec11e-9ce6-4aa5-ad9c-02807c2d5bae" xlink:to="loc_us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember_20888e17-aecf-4618-9b59-d5e6a1618f4f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_4ee47ebf-eff9-4d58-a893-48da3ff7e0a0" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ValuationAndQualifyingAccountsDisclosureLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_00a445bd-2398-4908-8e2a-602a0433f874" xlink:to="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_4ee47ebf-eff9-4d58-a893-48da3ff7e0a0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_27ba08a9-ec66-4623-b656-b0306f0642ca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MovementInValuationAllowancesAndReservesRollForward"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_4ee47ebf-eff9-4d58-a893-48da3ff7e0a0" xlink:to="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_27ba08a9-ec66-4623-b656-b0306f0642ca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesBalance_2dd0bc1e-a688-44d4-bbe6-6692af4f70f4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ValuationAllowancesAndReservesBalance"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_27ba08a9-ec66-4623-b656-b0306f0642ca" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesBalance_2dd0bc1e-a688-44d4-bbe6-6692af4f70f4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedPeriodStartLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_da5cde79-ef2f-4396-90ae-ac379ea8d8ef" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_27ba08a9-ec66-4623-b656-b0306f0642ca" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_da5cde79-ef2f-4396-90ae-ac379ea8d8ef" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts_91fb786d-a35a-4827-9967-3025003d7efd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_27ba08a9-ec66-4623-b656-b0306f0642ca" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts_91fb786d-a35a-4827-9967-3025003d7efd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesBalance_defed4f7-8751-4eea-ae30-d3b87f06a8ec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ValuationAllowancesAndReservesBalance"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_27ba08a9-ec66-4623-b656-b0306f0642ca" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesBalance_defed4f7-8751-4eea-ae30-d3b87f06a8ec" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedPeriodEndLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/LongTermDebtComponentsofLongTermDebtDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#LongTermDebtComponentsofLongTermDebtDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/LongTermDebtComponentsofLongTermDebtDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtDisclosureAbstract_ed77dec3-3312-4523-b0b4-5ec23aae4c6e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_6cb2fe1c-fe64-4c59-a597-89bc6927184c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_ed77dec3-3312-4523-b0b4-5ec23aae4c6e" xlink:to="loc_us-gaap_DebtInstrumentTable_6cb2fe1c-fe64-4c59-a597-89bc6927184c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_7ed6bf91-3598-4568-a85e-c33a06a1ea4e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_6cb2fe1c-fe64-4c59-a597-89bc6927184c" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_7ed6bf91-3598-4568-a85e-c33a06a1ea4e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_2a8cd889-56bb-47b0-9fb3-5b95f4fd6885" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_7ed6bf91-3598-4568-a85e-c33a06a1ea4e" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_2a8cd889-56bb-47b0-9fb3-5b95f4fd6885" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtMember_019bb89e-aa7e-7a8c-8d22-f648d3507e89" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConvertibleDebtMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_2a8cd889-56bb-47b0-9fb3-5b95f4fd6885" xlink:to="loc_us-gaap_ConvertibleDebtMember_019bb89e-aa7e-7a8c-8d22-f648d3507e89" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_6c4ea59f-4ff7-49ea-9d4a-e190edce6cb8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SeniorNotesMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_2a8cd889-56bb-47b0-9fb3-5b95f4fd6885" xlink:to="loc_us-gaap_SeniorNotesMember_6c4ea59f-4ff7-49ea-9d4a-e190edce6cb8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019c66fd-3d7a-7488-a4d2-cd5194ca46a6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_2a8cd889-56bb-47b0-9fb3-5b95f4fd6885" xlink:to="loc_us-gaap_LineOfCreditMember_019c66fd-3d7a-7488-a4d2-cd5194ca46a6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_OtherDebtMember_019be12e-7743-778d-a790-0930b7c38c46" xlink:href="bwxt-20251231.xsd#bwxt_OtherDebtMember"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_2a8cd889-56bb-47b0-9fb3-5b95f4fd6885" xlink:to="loc_bwxt_OtherDebtMember_019be12e-7743-778d-a790-0930b7c38c46" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_8ce0d380-be51-402d-bf5e-05fa2a466890" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_6cb2fe1c-fe64-4c59-a597-89bc6927184c" xlink:to="loc_us-gaap_DebtInstrumentLineItems_8ce0d380-be51-402d-bf5e-05fa2a466890" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_c19c65a9-87db-41ac-a54b-acf5a74eadd2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8ce0d380-be51-402d-bf5e-05fa2a466890" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_c19c65a9-87db-41ac-a54b-acf5a74eadd2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_LongTermDebtGrossCurrent_fa57d084-7134-41b5-9c25-f88c051801f4" xlink:href="bwxt-20251231.xsd#bwxt_LongTermDebtGrossCurrent"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8ce0d380-be51-402d-bf5e-05fa2a466890" xlink:to="loc_bwxt_LongTermDebtGrossCurrent_fa57d084-7134-41b5-9c25-f88c051801f4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_LongTermDebtGrossExcludingCurrentMaturities_3c22b73d-9c2c-46cb-a20c-f05a173f635e" xlink:href="bwxt-20251231.xsd#bwxt_LongTermDebtGrossExcludingCurrentMaturities"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8ce0d380-be51-402d-bf5e-05fa2a466890" xlink:to="loc_bwxt_LongTermDebtGrossExcludingCurrentMaturities_3c22b73d-9c2c-46cb-a20c-f05a173f635e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_6c997411-c940-4a4f-a013-d6dc2bd65ad1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8ce0d380-be51-402d-bf5e-05fa2a466890" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_6c997411-c940-4a4f-a013-d6dc2bd65ad1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_b698f129-0c0e-472f-8c62-4a70f0732832" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_8ce0d380-be51-402d-bf5e-05fa2a466890" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_b698f129-0c0e-472f-8c62-4a70f0732832" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/LongTermDebtMaturitiesNarrativeDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#LongTermDebtMaturitiesNarrativeDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/LongTermDebtMaturitiesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtDisclosureAbstract_00994c66-f88b-4a0f-b133-608ee32f4474" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_08e5df86-9598-4954-b56b-3c20728e19e9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_00994c66-f88b-4a0f-b133-608ee32f4474" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_08e5df86-9598-4954-b56b-3c20728e19e9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_7034cd57-4ca5-4cd9-868b-32b11f3eda4d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_00994c66-f88b-4a0f-b133-608ee32f4474" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_7034cd57-4ca5-4cd9-868b-32b11f3eda4d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_b7026364-6aa0-4559-a9b7-08aa6473aaa3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_00994c66-f88b-4a0f-b133-608ee32f4474" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_b7026364-6aa0-4559-a9b7-08aa6473aaa3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_4232d457-a47c-463e-b752-0b734ccaf766" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_00994c66-f88b-4a0f-b133-608ee32f4474" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_4232d457-a47c-463e-b752-0b734ccaf766" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_ef2992a8-24b9-4dee-bd19-2f7e40db0c27" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_00994c66-f88b-4a0f-b133-608ee32f4474" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_ef2992a8-24b9-4dee-bd19-2f7e40db0c27" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/LongTermDebtCreditFacilityNarrativeDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#LongTermDebtCreditFacilityNarrativeDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/LongTermDebtCreditFacilityNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtDisclosureAbstract_208988b2-a69f-4cee-877d-87b06dd5603d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_dd2e36e6-554b-470e-9574-5a42ebfafef5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_208988b2-a69f-4cee-877d-87b06dd5603d" xlink:to="loc_us-gaap_DebtInstrumentTable_dd2e36e6-554b-470e-9574-5a42ebfafef5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_f2618434-7831-404a-b36e-21b9879c0417" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_dd2e36e6-554b-470e-9574-5a42ebfafef5" xlink:to="loc_us-gaap_CreditFacilityAxis_f2618434-7831-404a-b36e-21b9879c0417" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_a7082551-872b-41ba-9ae6-60001f84945c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityAxis_f2618434-7831-404a-b36e-21b9879c0417" xlink:to="loc_us-gaap_CreditFacilityDomain_a7082551-872b-41ba-9ae6-60001f84945c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_5052b56d-a39e-4ff5-8d0a-c2f71342de2b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityDomain_a7082551-872b-41ba-9ae6-60001f84945c" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_5052b56d-a39e-4ff5-8d0a-c2f71342de2b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_669eec3d-22a9-4dd3-95d5-c2e87ae8f457" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LetterOfCreditMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityDomain_a7082551-872b-41ba-9ae6-60001f84945c" xlink:to="loc_us-gaap_LetterOfCreditMember_669eec3d-22a9-4dd3-95d5-c2e87ae8f457" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_PerformanceLetterOfCreditMember_454f78f8-2c20-4df3-9297-edc87b2a74ab" xlink:href="bwxt-20251231.xsd#bwxt_PerformanceLetterOfCreditMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityDomain_a7082551-872b-41ba-9ae6-60001f84945c" xlink:to="loc_bwxt_PerformanceLetterOfCreditMember_454f78f8-2c20-4df3-9297-edc87b2a74ab" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_019c6712-053b-7829-9ba6-72542564f9f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SecuredDebtMember"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityDomain_a7082551-872b-41ba-9ae6-60001f84945c" xlink:to="loc_us-gaap_SecuredDebtMember_019c6712-053b-7829-9ba6-72542564f9f0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_73173332-50be-42de-80b8-d3e549d27206" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_dd2e36e6-554b-470e-9574-5a42ebfafef5" xlink:to="loc_us-gaap_DebtInstrumentAxis_73173332-50be-42de-80b8-d3e549d27206" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_0cc629b5-d1c6-4c68-9d68-46ac1084ac73" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentAxis_73173332-50be-42de-80b8-d3e549d27206" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_0cc629b5-d1c6-4c68-9d68-46ac1084ac73" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_NewCreditFacilityMember_6e6d8d08-713d-4c86-87b3-af97db795ba6" xlink:href="bwxt-20251231.xsd#bwxt_NewCreditFacilityMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_0cc629b5-d1c6-4c68-9d68-46ac1084ac73" xlink:to="loc_bwxt_NewCreditFacilityMember_6e6d8d08-713d-4c86-87b3-af97db795ba6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_FormerCreditFacilityMember_019c6701-d848-749a-ba4a-01c49b6dd8cd" xlink:href="bwxt-20251231.xsd#bwxt_FormerCreditFacilityMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_0cc629b5-d1c6-4c68-9d68-46ac1084ac73" xlink:to="loc_bwxt_FormerCreditFacilityMember_019c6701-d848-749a-ba4a-01c49b6dd8cd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_3f0cf4c0-fc8e-4d52-b1e2-4ab8a3029881" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_dd2e36e6-554b-470e-9574-5a42ebfafef5" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_3f0cf4c0-fc8e-4d52-b1e2-4ab8a3029881" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_e6d3ea72-4e0b-4a25-b76b-13568a609c1c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_3f0cf4c0-fc8e-4d52-b1e2-4ab8a3029881" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_e6d3ea72-4e0b-4a25-b76b-13568a609c1c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_57f65ef7-a6f9-4596-a5f5-5945314bed3a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SecuredDebtMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_e6d3ea72-4e0b-4a25-b76b-13568a609c1c" xlink:to="loc_us-gaap_SecuredDebtMember_57f65ef7-a6f9-4596-a5f5-5945314bed3a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_2d6e3fe3-1f2c-44f4-89c1-481b824d2ff9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_e6d3ea72-4e0b-4a25-b76b-13568a609c1c" xlink:to="loc_us-gaap_LineOfCreditMember_2d6e3fe3-1f2c-44f4-89c1-481b824d2ff9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_84f8384c-8c80-4fe4-8f8d-97397a8fef30" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_VariableRateAxis"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_dd2e36e6-554b-470e-9574-5a42ebfafef5" xlink:to="loc_us-gaap_VariableRateAxis_84f8384c-8c80-4fe4-8f8d-97397a8fef30" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_43306ec3-e9c6-463c-86f8-694505c0bf5b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_VariableRateDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_VariableRateAxis_84f8384c-8c80-4fe4-8f8d-97397a8fef30" xlink:to="loc_us-gaap_VariableRateDomain_43306ec3-e9c6-463c-86f8-694505c0bf5b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_EurocurrencyRateMember_1a2ccc08-c50e-4e0c-ac33-eb9095bb633f" xlink:href="bwxt-20251231.xsd#bwxt_EurocurrencyRateMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_VariableRateDomain_43306ec3-e9c6-463c-86f8-694505c0bf5b" xlink:to="loc_bwxt_EurocurrencyRateMember_1a2ccc08-c50e-4e0c-ac33-eb9095bb633f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FederalFundsEffectiveSwapRateMember_019be171-2cb6-7f11-9df3-7e50a097b0d5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FederalFundsEffectiveSwapRateMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_VariableRateDomain_43306ec3-e9c6-463c-86f8-694505c0bf5b" xlink:to="loc_us-gaap_FederalFundsEffectiveSwapRateMember_019be171-2cb6-7f11-9df3-7e50a097b0d5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_PrimeRateOrCanadianPrimeRateMember_64800264-c00a-427c-9ac2-ed184fa47422" xlink:href="bwxt-20251231.xsd#bwxt_PrimeRateOrCanadianPrimeRateMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_VariableRateDomain_43306ec3-e9c6-463c-86f8-694505c0bf5b" xlink:to="loc_bwxt_PrimeRateOrCanadianPrimeRateMember_64800264-c00a-427c-9ac2-ed184fa47422" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BaseRateMember_0507c1b1-f9a8-4da7-99dc-03247a201353" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BaseRateMember"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_VariableRateDomain_43306ec3-e9c6-463c-86f8-694505c0bf5b" xlink:to="loc_us-gaap_BaseRateMember_0507c1b1-f9a8-4da7-99dc-03247a201353" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_4fa3733b-c28d-49b1-b5a3-8981252f1008" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_dd2e36e6-554b-470e-9574-5a42ebfafef5" xlink:to="loc_srt_RangeAxis_4fa3733b-c28d-49b1-b5a3-8981252f1008" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_04b59b1f-67f1-4518-a632-ac8b47738895" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_4fa3733b-c28d-49b1-b5a3-8981252f1008" xlink:to="loc_srt_RangeMember_04b59b1f-67f1-4518-a632-ac8b47738895" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_7fbc9177-ada2-44c9-8f9b-8dc9a4fa3e4a" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_04b59b1f-67f1-4518-a632-ac8b47738895" xlink:to="loc_srt_MinimumMember_7fbc9177-ada2-44c9-8f9b-8dc9a4fa3e4a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_604da08e-0819-4f0c-a0c8-d37dae433adc" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_04b59b1f-67f1-4518-a632-ac8b47738895" xlink:to="loc_srt_MaximumMember_604da08e-0819-4f0c-a0c8-d37dae433adc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_dd2e36e6-554b-470e-9574-5a42ebfafef5" xlink:to="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_da6362d6-0b07-471d-924c-eb7df47afc9e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_da6362d6-0b07-471d-924c-eb7df47afc9e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_c9054db4-bdb2-4d11-8581-e0e38a3b7429" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_c9054db4-bdb2-4d11-8581-e0e38a3b7429" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_LineOfCreditFacilityCovenantEarlyMaturityTriggerThresholdPeriodPriorToDueDate_019c6706-74d4-78e4-9096-4f606870e72d" xlink:href="bwxt-20251231.xsd#bwxt_LineOfCreditFacilityCovenantEarlyMaturityTriggerThresholdPeriodPriorToDueDate"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_bwxt_LineOfCreditFacilityCovenantEarlyMaturityTriggerThresholdPeriodPriorToDueDate_019c6706-74d4-78e4-9096-4f606870e72d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_LineOfCreditFacilityCovenantPercentageofEBITDA_0e1e7af5-4d0f-4576-9c19-f77bfd7ff2c9" xlink:href="bwxt-20251231.xsd#bwxt_LineOfCreditFacilityCovenantPercentageofEBITDA"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_bwxt_LineOfCreditFacilityCovenantPercentageofEBITDA_0e1e7af5-4d0f-4576-9c19-f77bfd7ff2c9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_LineOfCreditFacilityCovenantEarlyMaturityTriggerMaximumNetLeverageRatio_019c34c9-c97a-714c-9a97-d85d0f451ec7" xlink:href="bwxt-20251231.xsd#bwxt_LineOfCreditFacilityCovenantEarlyMaturityTriggerMaximumNetLeverageRatio"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_bwxt_LineOfCreditFacilityCovenantEarlyMaturityTriggerMaximumNetLeverageRatio_019c34c9-c97a-714c-9a97-d85d0f451ec7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_LineOfCreditFacilityCovenantEarlyMaturityTriggerMinimumLiquidityPercentageOfOutstandingUnsecuredDebt_019c34cf-0003-7ec3-ba66-c988cf323a40" xlink:href="bwxt-20251231.xsd#bwxt_LineOfCreditFacilityCovenantEarlyMaturityTriggerMinimumLiquidityPercentageOfOutstandingUnsecuredDebt"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_bwxt_LineOfCreditFacilityCovenantEarlyMaturityTriggerMinimumLiquidityPercentageOfOutstandingUnsecuredDebt_019c34cf-0003-7ec3-ba66-c988cf323a40" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_LineOfCreditFacilityAccordionFeatureIncreaseLimit_82ae45f3-5c39-4645-b2d5-aaa1fa841355" xlink:href="bwxt-20251231.xsd#bwxt_LineOfCreditFacilityAccordionFeatureIncreaseLimit"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_bwxt_LineOfCreditFacilityAccordionFeatureIncreaseLimit_82ae45f3-5c39-4645-b2d5-aaa1fa841355" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_LineOfCreditFacilityCovenantNumberOfFiscalQuarters_5d3af65f-488c-470c-8aa6-fef16695756d" xlink:href="bwxt-20251231.xsd#bwxt_LineOfCreditFacilityCovenantNumberOfFiscalQuarters"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_bwxt_LineOfCreditFacilityCovenantNumberOfFiscalQuarters_5d3af65f-488c-470c-8aa6-fef16695756d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_LineOfCreditFacilityCovenantMaximumProFormaFirstLienLeverageRatio_019c34d3-7667-7aee-bf75-13e56c705b85" xlink:href="bwxt-20251231.xsd#bwxt_LineOfCreditFacilityCovenantMaximumProFormaFirstLienLeverageRatio"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_bwxt_LineOfCreditFacilityCovenantMaximumProFormaFirstLienLeverageRatio_019c34d3-7667-7aee-bf75-13e56c705b85" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_af85abf1-4809-4737-b036-51775d4d1615" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_af85abf1-4809-4737-b036-51775d4d1615" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_84acbaca-ed97-492d-b236-82909e6fab40" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_84acbaca-ed97-492d-b236-82909e6fab40" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_LetterOfCreditFeeCommitmentFeePercentage_957b81f8-07df-4b99-b9e6-6eb1e6913dc0" xlink:href="bwxt-20251231.xsd#bwxt_LetterOfCreditFeeCommitmentFeePercentage"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_bwxt_LetterOfCreditFeeCommitmentFeePercentage_957b81f8-07df-4b99-b9e6-6eb1e6913dc0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DebtInstrumentCovenantLeverageRatioMaximum_0f797af3-9214-4161-a1f8-e3168904e04e" xlink:href="bwxt-20251231.xsd#bwxt_DebtInstrumentCovenantLeverageRatioMaximum"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_bwxt_DebtInstrumentCovenantLeverageRatioMaximum_0f797af3-9214-4161-a1f8-e3168904e04e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DebtInstrumentCovenantLeverageRatioMaximumAfterMaterialAcquisition_2fb7daf0-919a-4071-84b5-e886de7246c6" xlink:href="bwxt-20251231.xsd#bwxt_DebtInstrumentCovenantLeverageRatioMaximumAfterMaterialAcquisition"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_bwxt_DebtInstrumentCovenantLeverageRatioMaximumAfterMaterialAcquisition_2fb7daf0-919a-4071-84b5-e886de7246c6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DebtInstrumentCovenantInterestCoverageRatioMinimum_c0ec34f0-32eb-48bc-b20d-a6ca0fb1f054" xlink:href="bwxt-20251231.xsd#bwxt_DebtInstrumentCovenantInterestCoverageRatioMinimum"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_bwxt_DebtInstrumentCovenantInterestCoverageRatioMinimum_c0ec34f0-32eb-48bc-b20d-a6ca0fb1f054" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_4462bc90-fdd2-4786-bebb-3ea1681a5890" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebt"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_us-gaap_LongTermDebt_4462bc90-fdd2-4786-bebb-3ea1681a5890" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_019c7cad-44a6-7b1b-9bb9-1db6da859518" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCredit"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_us-gaap_LineOfCredit_019c7cad-44a6-7b1b-9bb9-1db6da859518" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_6af5d697-61bf-4c3a-bb64-d4ee515d588f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_452d7ba6-966b-45bd-aac4-8832e4750f14" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_6af5d697-61bf-4c3a-bb64-d4ee515d588f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/LongTermDebtSeniorNotesandOtherArrangementsNarrativeDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#LongTermDebtSeniorNotesandOtherArrangementsNarrativeDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/LongTermDebtSeniorNotesandOtherArrangementsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtDisclosureAbstract_dcc5beb5-5c25-4145-961a-e868fcdeb795" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_484101cd-f7a4-4927-9f25-75ac4b2c8708" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_dcc5beb5-5c25-4145-961a-e868fcdeb795" xlink:to="loc_us-gaap_DebtInstrumentTable_484101cd-f7a4-4927-9f25-75ac4b2c8708" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_03e487e0-52a1-4525-b9c8-7ee2a2d28cb9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_484101cd-f7a4-4927-9f25-75ac4b2c8708" xlink:to="loc_us-gaap_DebtInstrumentAxis_03e487e0-52a1-4525-b9c8-7ee2a2d28cb9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_b62df728-2567-45de-80a5-2c6dc8344467" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentAxis_03e487e0-52a1-4525-b9c8-7ee2a2d28cb9" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_b62df728-2567-45de-80a5-2c6dc8344467" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_SeniorNotesDue2028Member_60186178-7f39-4f92-b6d5-da03c71894fc" xlink:href="bwxt-20251231.xsd#bwxt_SeniorNotesDue2028Member"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_b62df728-2567-45de-80a5-2c6dc8344467" xlink:to="loc_bwxt_SeniorNotesDue2028Member_60186178-7f39-4f92-b6d5-da03c71894fc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_SeniorNotesDue2029Member_26d8de85-a93d-4fd4-84e5-93ceb0985565" xlink:href="bwxt-20251231.xsd#bwxt_SeniorNotesDue2029Member"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_b62df728-2567-45de-80a5-2c6dc8344467" xlink:to="loc_bwxt_SeniorNotesDue2029Member_26d8de85-a93d-4fd4-84e5-93ceb0985565" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_NewCreditFacilityMember_019be187-5c12-75f6-80c8-7392a5e4607d" xlink:href="bwxt-20251231.xsd#bwxt_NewCreditFacilityMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_b62df728-2567-45de-80a5-2c6dc8344467" xlink:to="loc_bwxt_NewCreditFacilityMember_019be187-5c12-75f6-80c8-7392a5e4607d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_A2030NotesMember_019be187-8703-7345-a8b1-76267045f8b3" xlink:href="bwxt-20251231.xsd#bwxt_A2030NotesMember"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_b62df728-2567-45de-80a5-2c6dc8344467" xlink:to="loc_bwxt_A2030NotesMember_019be187-8703-7345-a8b1-76267045f8b3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_756ca91d-a143-42ac-9ed4-af9c1815cb2e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_484101cd-f7a4-4927-9f25-75ac4b2c8708" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_756ca91d-a143-42ac-9ed4-af9c1815cb2e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_6c9e0fb9-4686-473b-96d0-b70a8f64e139" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_756ca91d-a143-42ac-9ed4-af9c1815cb2e" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_6c9e0fb9-4686-473b-96d0-b70a8f64e139" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_6fed20b0-60ad-4c84-86dc-e5fb124003b2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SeniorNotesMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_6c9e0fb9-4686-473b-96d0-b70a8f64e139" xlink:to="loc_us-gaap_SeniorNotesMember_6fed20b0-60ad-4c84-86dc-e5fb124003b2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_019be187-5c12-7bce-89ba-bbbc9260b63d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_6c9e0fb9-4686-473b-96d0-b70a8f64e139" xlink:to="loc_us-gaap_LineOfCreditMember_019be187-5c12-7bce-89ba-bbbc9260b63d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtMember_019be187-8703-71f1-b370-0d792d36f6cb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConvertibleDebtMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_6c9e0fb9-4686-473b-96d0-b70a8f64e139" xlink:to="loc_us-gaap_ConvertibleDebtMember_019be187-8703-71f1-b370-0d792d36f6cb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_41bbc408-9f56-4238-9ccc-a0aafa542987" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_484101cd-f7a4-4927-9f25-75ac4b2c8708" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_41bbc408-9f56-4238-9ccc-a0aafa542987" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_13b3a29c-2456-4da3-a6e5-1f1049d512e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_41bbc408-9f56-4238-9ccc-a0aafa542987" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_13b3a29c-2456-4da3-a6e5-1f1049d512e5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodThreeMember_e430972c-7344-473c-a898-9a541fdebc2a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentRedemptionPeriodThreeMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_13b3a29c-2456-4da3-a6e5-1f1049d512e5" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodThreeMember_e430972c-7344-473c-a898-9a541fdebc2a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodFourMember_1eb2130e-2b77-4680-ba11-13130ebd8c11" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentRedemptionPeriodFourMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_13b3a29c-2456-4da3-a6e5-1f1049d512e5" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodFourMember_1eb2130e-2b77-4680-ba11-13130ebd8c11" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_332dcdc1-9c04-4118-a3e7-fac94c1378e0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityAxis"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_484101cd-f7a4-4927-9f25-75ac4b2c8708" xlink:to="loc_us-gaap_CreditFacilityAxis_332dcdc1-9c04-4118-a3e7-fac94c1378e0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_759bed6a-822a-4a4c-8e84-0d62058d1306" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityAxis_332dcdc1-9c04-4118-a3e7-fac94c1378e0" xlink:to="loc_us-gaap_CreditFacilityDomain_759bed6a-822a-4a4c-8e84-0d62058d1306" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_c6b62c24-1ce1-49b3-b3d7-d05fd07c9a64" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LetterOfCreditMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityDomain_759bed6a-822a-4a4c-8e84-0d62058d1306" xlink:to="loc_us-gaap_LetterOfCreditMember_c6b62c24-1ce1-49b3-b3d7-d05fd07c9a64" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019be187-5c12-7720-8704-1a87e63956a7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityDomain_759bed6a-822a-4a4c-8e84-0d62058d1306" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019be187-5c12-7720-8704-1a87e63956a7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DebtInstrumentConvertibleTermsOfConversionAxis_019be250-e621-7a64-bc34-4cd46a1eb357" xlink:href="bwxt-20251231.xsd#bwxt_DebtInstrumentConvertibleTermsOfConversionAxis"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_484101cd-f7a4-4927-9f25-75ac4b2c8708" xlink:to="loc_bwxt_DebtInstrumentConvertibleTermsOfConversionAxis_019be250-e621-7a64-bc34-4cd46a1eb357" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DebtInstrumentConvertibleTermsOfConversionDomain_019be250-e622-75ea-981c-e4c5c95c7ae2" xlink:href="bwxt-20251231.xsd#bwxt_DebtInstrumentConvertibleTermsOfConversionDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_DebtInstrumentConvertibleTermsOfConversionAxis_019be250-e621-7a64-bc34-4cd46a1eb357" xlink:to="loc_bwxt_DebtInstrumentConvertibleTermsOfConversionDomain_019be250-e622-75ea-981c-e4c5c95c7ae2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DebtConversionTermsOneMember_019be250-e622-7f38-b9d2-3d6a7bced7a4" xlink:href="bwxt-20251231.xsd#bwxt_DebtConversionTermsOneMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_DebtInstrumentConvertibleTermsOfConversionDomain_019be250-e622-75ea-981c-e4c5c95c7ae2" xlink:to="loc_bwxt_DebtConversionTermsOneMember_019be250-e622-7f38-b9d2-3d6a7bced7a4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DebtConversionTermsTwoMember_019be255-0b02-7448-a731-097fe3c06d73" xlink:href="bwxt-20251231.xsd#bwxt_DebtConversionTermsTwoMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_DebtInstrumentConvertibleTermsOfConversionDomain_019be250-e622-75ea-981c-e4c5c95c7ae2" xlink:to="loc_bwxt_DebtConversionTermsTwoMember_019be255-0b02-7448-a731-097fe3c06d73" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019be6b4-dd7f-7a2e-aa92-d4ce90d579f1" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_484101cd-f7a4-4927-9f25-75ac4b2c8708" xlink:to="loc_srt_RangeAxis_019be6b4-dd7f-7a2e-aa92-d4ce90d579f1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019be6b4-dd7f-7152-9102-b1c614b1d75c" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_019be6b4-dd7f-7a2e-aa92-d4ce90d579f1" xlink:to="loc_srt_RangeMember_019be6b4-dd7f-7152-9102-b1c614b1d75c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019be6b4-dd7f-7334-922b-f088283c921b" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_019be6b4-dd7f-7152-9102-b1c614b1d75c" xlink:to="loc_srt_MaximumMember_019be6b4-dd7f-7334-922b-f088283c921b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_484101cd-f7a4-4927-9f25-75ac4b2c8708" xlink:to="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_f5a25567-ee19-456c-bb78-06aa270f53d7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_f5a25567-ee19-456c-bb78-06aa270f53d7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_e3a1151f-781e-4729-aee4-47c6abae0093" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_e3a1151f-781e-4729-aee4-47c6abae0093" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_78ad0be4-90bf-4912-b8df-cd9831bbb977" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_78ad0be4-90bf-4912-b8df-cd9831bbb977" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_d9026c93-3b3c-4b7f-9c47-c7b196a4e822" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_d9026c93-3b3c-4b7f-9c47-c7b196a4e822" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019be6b4-dd7f-768c-94c4-68b22d2aa729" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_019be6b4-dd7f-768c-94c4-68b22d2aa729" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DebtInstrumentAdditionalPurchaseOptionPrincipalAmount_019be6a3-34ee-71ce-b66c-641356a92436" xlink:href="bwxt-20251231.xsd#bwxt_DebtInstrumentAdditionalPurchaseOptionPrincipalAmount"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:to="loc_bwxt_DebtInstrumentAdditionalPurchaseOptionPrincipalAmount_019be6a3-34ee-71ce-b66c-641356a92436" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleConversionRatio1_019be187-8703-71ea-8cb6-ba0c08a12125" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentConvertibleConversionRatio1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:to="loc_us-gaap_DebtInstrumentConvertibleConversionRatio1_019be187-8703-71ea-8cb6-ba0c08a12125" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_019be242-17e6-7381-b4d6-638e74cc6aa3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentConvertibleConversionPrice1"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:to="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_019be242-17e6-7381-b4d6-638e74cc6aa3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger_019be250-e622-785a-9a19-06447152cc8c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:to="loc_us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger_019be250-e622-785a-9a19-06447152cc8c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_PaymentForPurchaseOfCappedCalls_019be6be-3534-7aae-9d3c-07626106cf6b" xlink:href="bwxt-20251231.xsd#bwxt_PaymentForPurchaseOfCappedCalls"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:to="loc_bwxt_PaymentForPurchaseOfCappedCalls_019be6be-3534-7aae-9d3c-07626106cf6b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DebtInstrumentCappedCallTransactionPriceCapPerShareOfCommonStock_019be6c0-6dc5-705f-8139-62e0ed656a8f" xlink:href="bwxt-20251231.xsd#bwxt_DebtInstrumentCappedCallTransactionPriceCapPerShareOfCommonStock"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:to="loc_bwxt_DebtInstrumentCappedCallTransactionPriceCapPerShareOfCommonStock_019be6c0-6dc5-705f-8139-62e0ed656a8f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DebtInstrumentCappedCallTransactionPremiumPercentage_019be6c4-562c-7ec1-a9a4-c0f2f4d94629" xlink:href="bwxt-20251231.xsd#bwxt_DebtInstrumentCappedCallTransactionPremiumPercentage"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:to="loc_bwxt_DebtInstrumentCappedCallTransactionPremiumPercentage_019be6c4-562c-7ec1-a9a4-c0f2f4d94629" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharePrice_019be6c7-1921-7527-998a-b9d2dd638d20" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharePrice"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:to="loc_us-gaap_SharePrice_019be6c7-1921-7527-998a-b9d2dd638d20" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleThresholdTradingDays_019be252-d5f0-7f0e-9e85-5d8ed1027214" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentConvertibleThresholdTradingDays"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:to="loc_us-gaap_DebtInstrumentConvertibleThresholdTradingDays_019be252-d5f0-7f0e-9e85-5d8ed1027214" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1_019be254-0dd7-713b-bfa3-3779cd2c7761" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:to="loc_us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1_019be254-0dd7-713b-bfa3-3779cd2c7761" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_BondsIssuedAndOutstanding_985fc3d1-1596-4c12-971f-44115a02cbdb" xlink:href="bwxt-20251231.xsd#bwxt_BondsIssuedAndOutstanding"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:to="loc_bwxt_BondsIssuedAndOutstanding_985fc3d1-1596-4c12-971f-44115a02cbdb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_88010645-de3b-405f-b107-344e3ceefc89" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LettersOfCreditOutstandingAmount"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bb2a4f1d-a81d-4381-b8b3-7413aced4a00" xlink:to="loc_us-gaap_LettersOfCreditOutstandingAmount_88010645-de3b-405f-b107-344e3ceefc89" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsObligationsandFundedStatusDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#PensionPlansandPostretirementBenefitsObligationsandFundedStatusDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsObligationsandFundedStatusDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_54d950f9-22cf-4154-90be-604193eaa528" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable_236fd758-3531-48a5-a0fd-16acc2dcc685" xlink:href="bwxt-20251231.xsd#bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_54d950f9-22cf-4154-90be-604193eaa528" xlink:to="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable_236fd758-3531-48a5-a0fd-16acc2dcc685" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_f0b5a08c-2bc3-4631-a0b0-de92dfb70dca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable_236fd758-3531-48a5-a0fd-16acc2dcc685" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_f0b5a08c-2bc3-4631-a0b0-de92dfb70dca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_62f031a4-7107-40e7-bf5d-18efe3ff2b85" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_f0b5a08c-2bc3-4631-a0b0-de92dfb70dca" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_62f031a4-7107-40e7-bf5d-18efe3ff2b85" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_23a570c0-64f9-45a7-bdba-d416cf74c820" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_62f031a4-7107-40e7-bf5d-18efe3ff2b85" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_23a570c0-64f9-45a7-bdba-d416cf74c820" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_78a2bdfe-6303-4c26-a9b0-924837a205ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_62f031a4-7107-40e7-bf5d-18efe3ff2b85" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_78a2bdfe-6303-4c26-a9b0-924837a205ed" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_56ac8bf2-640a-480f-9ba3-fe29f6934ef4" xlink:href="bwxt-20251231.xsd#bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable_236fd758-3531-48a5-a0fd-16acc2dcc685" xlink:to="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_56ac8bf2-640a-480f-9ba3-fe29f6934ef4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bc37a471-d7ee-4da0-812d-bd7aa4b13637" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_56ac8bf2-640a-480f-9ba3-fe29f6934ef4" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bc37a471-d7ee-4da0-812d-bd7aa4b13637" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_f2b33e51-eeaa-4c3d-9b1e-ba06587edda9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bc37a471-d7ee-4da0-812d-bd7aa4b13637" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligation_f2b33e51-eeaa-4c3d-9b1e-ba06587edda9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_4e99a43e-3053-45bd-9a36-e905918b01f3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bc37a471-d7ee-4da0-812d-bd7aa4b13637" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_4e99a43e-3053-45bd-9a36-e905918b01f3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_a638093b-06e7-4c32-b024-411a659df5b9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bc37a471-d7ee-4da0-812d-bd7aa4b13637" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_a638093b-06e7-4c32-b024-411a659df5b9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_088422f1-fd1f-4760-acd6-9f021c439f26" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bc37a471-d7ee-4da0-812d-bd7aa4b13637" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_088422f1-fd1f-4760-acd6-9f021c439f26" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAmendments_c84a77c7-751f-4cdb-a82a-9da3ed91d9f8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanPlanAmendments"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bc37a471-d7ee-4da0-812d-bd7aa4b13637" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAmendments_c84a77c7-751f-4cdb-a82a-9da3ed91d9f8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsBenefitObligation_019c34e0-5900-7c86-8a97-72aaad0d57c5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsBenefitObligation"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bc37a471-d7ee-4da0-812d-bd7aa4b13637" xlink:to="loc_us-gaap_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsBenefitObligation_019c34e0-5900-7c86-8a97-72aaad0d57c5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanSettlementsBenefitObligation_5141f743-454a-487f-a555-d824e2827532" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanSettlementsBenefitObligation"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bc37a471-d7ee-4da0-812d-bd7aa4b13637" xlink:to="loc_us-gaap_DefinedBenefitPlanSettlementsBenefitObligation_5141f743-454a-487f-a555-d824e2827532" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_36e53efb-9950-4dcd-b052-5a614608b7ee" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanActuarialGainLoss"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bc37a471-d7ee-4da0-812d-bd7aa4b13637" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_36e53efb-9950-4dcd-b052-5a614608b7ee" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation_22ea0e7a-ab58-41a9-af0d-160371afc4d9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bc37a471-d7ee-4da0-812d-bd7aa4b13637" xlink:to="loc_us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation_22ea0e7a-ab58-41a9-af0d-160371afc4d9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_50efda12-d3d6-478f-b698-c36b40594859" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bc37a471-d7ee-4da0-812d-bd7aa4b13637" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_50efda12-d3d6-478f-b698-c36b40594859" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_7e5cf8fa-98e7-47e8-862a-de610e618fd7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_bc37a471-d7ee-4da0-812d-bd7aa4b13637" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligation_7e5cf8fa-98e7-47e8-862a-de610e618fd7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_93796760-444f-4e17-8044-7cbd138fb1fd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_56ac8bf2-640a-480f-9ba3-fe29f6934ef4" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_93796760-444f-4e17-8044-7cbd138fb1fd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_9c5a03e0-4625-4f2d-8e0b-1036df3f9eab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_93796760-444f-4e17-8044-7cbd138fb1fd" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_9c5a03e0-4625-4f2d-8e0b-1036df3f9eab" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_1c22d4ca-ec7d-4bef-9f7b-1b330f64e799" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_93796760-444f-4e17-8044-7cbd138fb1fd" xlink:to="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_1c22d4ca-ec7d-4bef-9f7b-1b330f64e799" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_a3a55a12-5a8d-447b-811e-2ca1b102790a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_93796760-444f-4e17-8044-7cbd138fb1fd" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_a3a55a12-5a8d-447b-811e-2ca1b102790a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_561b576e-c615-4256-b0d8-e61410d0ac43" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_93796760-444f-4e17-8044-7cbd138fb1fd" xlink:to="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_561b576e-c615-4256-b0d8-e61410d0ac43" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanSettlementsPlanAssets_f660dd3b-362e-48ad-b164-98c9e1c725c2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanSettlementsPlanAssets"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_93796760-444f-4e17-8044-7cbd138fb1fd" xlink:to="loc_us-gaap_DefinedBenefitPlanSettlementsPlanAssets_f660dd3b-362e-48ad-b164-98c9e1c725c2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsPlanAssets_019c34df-590b-7ded-8b91-75b483e24205" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsPlanAssets"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_93796760-444f-4e17-8044-7cbd138fb1fd" xlink:to="loc_us-gaap_DefinedBenefitPlanBusinessCombinationsAndAcquisitionsPlanAssets_019c34df-590b-7ded-8b91-75b483e24205" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_70a04433-2d99-4ead-927b-5fc89fce7a70" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_93796760-444f-4e17-8044-7cbd138fb1fd" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_70a04433-2d99-4ead-927b-5fc89fce7a70" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_351d7856-4eff-4ae6-8be3-6ca19d621c0d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_93796760-444f-4e17-8044-7cbd138fb1fd" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_351d7856-4eff-4ae6-8be3-6ca19d621c0d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_4a95a99c-f504-47a0-beab-8905722c62c5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_93796760-444f-4e17-8044-7cbd138fb1fd" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_4a95a99c-f504-47a0-beab-8905722c62c5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_eb9d7660-9449-421e-886b-f710594b1db4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlan"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_56ac8bf2-640a-480f-9ba3-fe29f6934ef4" xlink:to="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_eb9d7660-9449-421e-886b-f710594b1db4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_b723a20f-284d-4164-877b-1b966e383442" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_56ac8bf2-640a-480f-9ba3-fe29f6934ef4" xlink:to="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_b723a20f-284d-4164-877b-1b966e383442" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_AssetsForPlanBenefitsPrepaidPostretirementBenefitObligation_7127d51c-468a-4821-8240-6342f0bec82c" xlink:href="bwxt-20251231.xsd#bwxt_AssetsForPlanBenefitsPrepaidPostretirementBenefitObligation"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_b723a20f-284d-4164-877b-1b966e383442" xlink:to="loc_bwxt_AssetsForPlanBenefitsPrepaidPostretirementBenefitObligation_7127d51c-468a-4821-8240-6342f0bec82c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_7e51766c-e7c6-486e-a438-c572e5bd503e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_b723a20f-284d-4164-877b-1b966e383442" xlink:to="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_7e51766c-e7c6-486e-a438-c572e5bd503e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_PrepaidAccruedEmployeeBenefits_e1f38071-a98b-4f46-a7d7-53fe38a7151a" xlink:href="bwxt-20251231.xsd#bwxt_PrepaidAccruedEmployeeBenefits"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_b723a20f-284d-4164-877b-1b966e383442" xlink:to="loc_bwxt_PrepaidAccruedEmployeeBenefits_e1f38071-a98b-4f46-a7d7-53fe38a7151a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent_10db60e7-3b08-477e-b5bb-216e487bce67" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_b723a20f-284d-4164-877b-1b966e383442" xlink:to="loc_us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent_10db60e7-3b08-477e-b5bb-216e487bce67" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent_8d95879c-7f2d-4788-ba0a-25385c51f670" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_b723a20f-284d-4164-877b-1b966e383442" xlink:to="loc_us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent_8d95879c-7f2d-4788-ba0a-25385c51f670" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_9ae6a497-5543-49be-943e-e7a3fc124307" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_b723a20f-284d-4164-877b-1b966e383442" xlink:to="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_9ae6a497-5543-49be-943e-e7a3fc124307" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_5aba5acd-f8d5-4db1-8778-b2ddb97c4b53" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_56ac8bf2-640a-480f-9ba3-fe29f6934ef4" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_5aba5acd-f8d5-4db1-8778-b2ddb97c4b53" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_56f21cc5-30ad-473b-852b-9dcaafd87457" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_5aba5acd-f8d5-4db1-8778-b2ddb97c4b53" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_56f21cc5-30ad-473b-852b-9dcaafd87457" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract_d0c22a66-9535-4d9a-a3a6-526b698d6d3b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_56ac8bf2-640a-480f-9ba3-fe29f6934ef4" xlink:to="loc_us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract_d0c22a66-9535-4d9a-a3a6-526b698d6d3b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation_8e59383a-a5ac-4a40-8e94-b0b616a53b7c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract_d0c22a66-9535-4d9a-a3a6-526b698d6d3b" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation_8e59383a-a5ac-4a40-8e94-b0b616a53b7c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_7aa811f7-80b1-4c2a-8840-363bd0a76680" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract_d0c22a66-9535-4d9a-a3a6-526b698d6d3b" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_7aa811f7-80b1-4c2a-8840-363bd0a76680" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_549a3146-407b-4ee1-92dc-4ad943b9f20c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract_d0c22a66-9535-4d9a-a3a6-526b698d6d3b" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_549a3146-407b-4ee1-92dc-4ad943b9f20c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_ebceb356-9fc1-4502-899f-1352993504ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_56ac8bf2-640a-480f-9ba3-fe29f6934ef4" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_ebceb356-9fc1-4502-899f-1352993504ed" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DefinedBenefitPlanPlansWithAssetsInExcessOfAccumulatedBenefitObligationAggregateProjectedBenefitObligation_934d52b0-9d3c-4e03-b4bb-609ac3c31342" xlink:href="bwxt-20251231.xsd#bwxt_DefinedBenefitPlanPlansWithAssetsInExcessOfAccumulatedBenefitObligationAggregateProjectedBenefitObligation"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_ebceb356-9fc1-4502-899f-1352993504ed" xlink:to="loc_bwxt_DefinedBenefitPlanPlansWithAssetsInExcessOfAccumulatedBenefitObligationAggregateProjectedBenefitObligation_934d52b0-9d3c-4e03-b4bb-609ac3c31342" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DefinedBenefitPlanPlansWithAssetsInExcessOfAccumulatedBenefitObligationAggregateAccumulatedBenefitObligation_a764280c-8958-4989-8aa5-426a5f3e204a" xlink:href="bwxt-20251231.xsd#bwxt_DefinedBenefitPlanPlansWithAssetsInExcessOfAccumulatedBenefitObligationAggregateAccumulatedBenefitObligation"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_ebceb356-9fc1-4502-899f-1352993504ed" xlink:to="loc_bwxt_DefinedBenefitPlanPlansWithAssetsInExcessOfAccumulatedBenefitObligationAggregateAccumulatedBenefitObligation_a764280c-8958-4989-8aa5-426a5f3e204a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DefinedBenefitPlanPlansWithAssetsInExcessOfAccumulatedBenefitObligationAggregateFairValueOfPlanAssets_2ea16748-b7aa-47b8-bf73-8cd4e2de400d" xlink:href="bwxt-20251231.xsd#bwxt_DefinedBenefitPlanPlansWithAssetsInExcessOfAccumulatedBenefitObligationAggregateFairValueOfPlanAssets"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_ebceb356-9fc1-4502-899f-1352993504ed" xlink:to="loc_bwxt_DefinedBenefitPlanPlansWithAssetsInExcessOfAccumulatedBenefitObligationAggregateFairValueOfPlanAssets_2ea16748-b7aa-47b8-bf73-8cd4e2de400d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsAdditionalInformationDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#PensionPlansandPostretirementBenefitsAdditionalInformationDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_1bce7554-8cce-4cc6-bd6a-f178b886c52f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_44aeb20d-04d0-4341-aa78-e5e26c64c850" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_1bce7554-8cce-4cc6-bd6a-f178b886c52f" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_44aeb20d-04d0-4341-aa78-e5e26c64c850" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_01b9d313-5df4-45e8-9946-e1bdb3189d2b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_44aeb20d-04d0-4341-aa78-e5e26c64c850" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_01b9d313-5df4-45e8-9946-e1bdb3189d2b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_e200fa83-77df-4468-9e5e-d84307d1acbe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_01b9d313-5df4-45e8-9946-e1bdb3189d2b" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_e200fa83-77df-4468-9e5e-d84307d1acbe" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_4a1fbcd5-391c-4812-aeb7-5b5d1f22f5eb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_e200fa83-77df-4468-9e5e-d84307d1acbe" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_4a1fbcd5-391c-4812-aeb7-5b5d1f22f5eb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanNameAxis_ec491957-238d-45cb-8555-2f4cacec8a17" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanNameAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_44aeb20d-04d0-4341-aa78-e5e26c64c850" xlink:to="loc_us-gaap_RetirementPlanNameAxis_ec491957-238d-45cb-8555-2f4cacec8a17" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanNameDomain_8a1a4655-e2af-4c4e-88b5-1667b77350ff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanNameDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanNameAxis_ec491957-238d-45cb-8555-2f4cacec8a17" xlink:to="loc_us-gaap_RetirementPlanNameDomain_8a1a4655-e2af-4c4e-88b5-1667b77350ff" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ThriftPlanMember_7dc0a3e0-afbc-417f-8c46-e570be573a26" xlink:href="bwxt-20251231.xsd#bwxt_ThriftPlanMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanNameDomain_8a1a4655-e2af-4c4e-88b5-1667b77350ff" xlink:to="loc_bwxt_ThriftPlanMember_7dc0a3e0-afbc-417f-8c46-e570be573a26" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ThriftPlanAndMiiThriftPlanMember_4fe050ea-18f1-46ce-b36c-118726d2a7be" xlink:href="bwxt-20251231.xsd#bwxt_ThriftPlanAndMiiThriftPlanMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanNameDomain_8a1a4655-e2af-4c4e-88b5-1667b77350ff" xlink:to="loc_bwxt_ThriftPlanAndMiiThriftPlanMember_4fe050ea-18f1-46ce-b36c-118726d2a7be" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_e02f3e77-aec4-456c-a9b3-7463d5d37614" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_44aeb20d-04d0-4341-aa78-e5e26c64c850" xlink:to="loc_srt_RangeAxis_e02f3e77-aec4-456c-a9b3-7463d5d37614" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_9994d92c-d2c8-4d50-8d0c-53da9c2fdf09" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_e02f3e77-aec4-456c-a9b3-7463d5d37614" xlink:to="loc_srt_RangeMember_9994d92c-d2c8-4d50-8d0c-53da9c2fdf09" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_9094a243-e373-4045-96f5-b5a8b2078ed3" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_9994d92c-d2c8-4d50-8d0c-53da9c2fdf09" xlink:to="loc_srt_MaximumMember_9094a243-e373-4045-96f5-b5a8b2078ed3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_949e65e5-43e2-4cb0-988e-c56fe9e64be6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_44aeb20d-04d0-4341-aa78-e5e26c64c850" xlink:to="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_949e65e5-43e2-4cb0-988e-c56fe9e64be6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DefinedBenefitPlanEligibilityRequirementContinuousServiceTerm_019c34dc-5360-7da8-8677-3d1b0c033ead" xlink:href="bwxt-20251231.xsd#bwxt_DefinedBenefitPlanEligibilityRequirementContinuousServiceTerm"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_949e65e5-43e2-4cb0-988e-c56fe9e64be6" xlink:to="loc_bwxt_DefinedBenefitPlanEligibilityRequirementContinuousServiceTerm_019c34dc-5360-7da8-8677-3d1b0c033ead" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_6d1e9b66-9817-4c35-afa7-c49266c7de25" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_949e65e5-43e2-4cb0-988e-c56fe9e64be6" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_6d1e9b66-9817-4c35-afa7-c49266c7de25" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostCreditExcludingServiceCostStatementOfIncomeOrComprehensiveIncomeExtensibleList_60684125-333f-4719-b3f6-d35edf211edf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostCreditExcludingServiceCostStatementOfIncomeOrComprehensiveIncomeExtensibleList"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_949e65e5-43e2-4cb0-988e-c56fe9e64be6" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostCreditExcludingServiceCostStatementOfIncomeOrComprehensiveIncomeExtensibleList_60684125-333f-4719-b3f6-d35edf211edf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent_819e0fd9-2f7f-42d4-b56a-f33dea7fa13a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_949e65e5-43e2-4cb0-988e-c56fe9e64be6" xlink:to="loc_us-gaap_NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent_819e0fd9-2f7f-42d4-b56a-f33dea7fa13a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationPeriodIncreaseDecrease_5f59dbad-e4d3-4efb-8df5-28445e23e627" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanBenefitObligationPeriodIncreaseDecrease"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_949e65e5-43e2-4cb0-988e-c56fe9e64be6" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationPeriodIncreaseDecrease_5f59dbad-e4d3-4efb-8df5-28445e23e627" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DefinedBenefitPlanAmountsRecognizedInNetPeriodicPensionCostAndOtherComprehensiveIncomeLoss_dd9b5b36-73ca-456b-8512-b753ba4ef6fd" xlink:href="bwxt-20251231.xsd#bwxt_DefinedBenefitPlanAmountsRecognizedInNetPeriodicPensionCostAndOtherComprehensiveIncomeLoss"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_949e65e5-43e2-4cb0-988e-c56fe9e64be6" xlink:to="loc_bwxt_DefinedBenefitPlanAmountsRecognizedInNetPeriodicPensionCostAndOtherComprehensiveIncomeLoss_dd9b5b36-73ca-456b-8512-b753ba4ef6fd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DefinedBenefitPlanAmountsRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLoss_985cbb04-66d2-43db-8f4a-904900543149" xlink:href="bwxt-20251231.xsd#bwxt_DefinedBenefitPlanAmountsRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLoss"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_949e65e5-43e2-4cb0-988e-c56fe9e64be6" xlink:to="loc_bwxt_DefinedBenefitPlanAmountsRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLoss_985cbb04-66d2-43db-8f4a-904900543149" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DefinedBenefitPlanPercentageOfInvestmentReturnOnPlanAssets_c567ebd1-7c78-40c5-b344-ceeb0bd94c71" xlink:href="bwxt-20251231.xsd#bwxt_DefinedBenefitPlanPercentageOfInvestmentReturnOnPlanAssets"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_949e65e5-43e2-4cb0-988e-c56fe9e64be6" xlink:to="loc_bwxt_DefinedBenefitPlanPercentageOfInvestmentReturnOnPlanAssets_c567ebd1-7c78-40c5-b344-ceeb0bd94c71" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_61b8193d-b17c-4394-bec0-927791f01b1b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_949e65e5-43e2-4cb0-988e-c56fe9e64be6" xlink:to="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_61b8193d-b17c-4394-bec0-927791f01b1b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent_a70ca53f-aff6-451a-9829-8b88404b366a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_949e65e5-43e2-4cb0-988e-c56fe9e64be6" xlink:to="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent_a70ca53f-aff6-451a-9829-8b88404b366a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DefinedContributionPlanVestingPeriodForEmployerMatchingContributions_7ad9fcbe-7586-4d33-af20-9f4ec69bb934" xlink:href="bwxt-20251231.xsd#bwxt_DefinedContributionPlanVestingPeriodForEmployerMatchingContributions"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_949e65e5-43e2-4cb0-988e-c56fe9e64be6" xlink:to="loc_bwxt_DefinedContributionPlanVestingPeriodForEmployerMatchingContributions_7ad9fcbe-7586-4d33-af20-9f4ec69bb934" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanCostRecognized_326c0fa2-578c-43cf-8bc7-0ca8bef6d3b5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedContributionPlanCostRecognized"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_949e65e5-43e2-4cb0-988e-c56fe9e64be6" xlink:to="loc_us-gaap_DefinedContributionPlanCostRecognized_326c0fa2-578c-43cf-8bc7-0ca8bef6d3b5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsComponentsofNetPeriodicBenefitCostDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#PensionPlansandPostretirementBenefitsComponentsofNetPeriodicBenefitCostDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsComponentsofNetPeriodicBenefitCostDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_502711db-0089-4b3f-98e6-e1c14859a927" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_02afe1fd-05e6-4c1f-8018-aa333128d758" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_502711db-0089-4b3f-98e6-e1c14859a927" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_02afe1fd-05e6-4c1f-8018-aa333128d758" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_faf77243-b9b3-4bd8-951a-53c539ac5359" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_02afe1fd-05e6-4c1f-8018-aa333128d758" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_faf77243-b9b3-4bd8-951a-53c539ac5359" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_efeec3fb-d0ab-4501-a2f2-15ad2d920bf0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_faf77243-b9b3-4bd8-951a-53c539ac5359" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_efeec3fb-d0ab-4501-a2f2-15ad2d920bf0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_34ecc7bf-f666-4507-ab6a-45da91d7bae8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_efeec3fb-d0ab-4501-a2f2-15ad2d920bf0" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_34ecc7bf-f666-4507-ab6a-45da91d7bae8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_baeb5075-faee-4d62-80b3-ebe3605234b9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_efeec3fb-d0ab-4501-a2f2-15ad2d920bf0" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_baeb5075-faee-4d62-80b3-ebe3605234b9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1d01762f-8f09-46e5-ac57-0c50b22a7240" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_02afe1fd-05e6-4c1f-8018-aa333128d758" xlink:to="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1d01762f-8f09-46e5-ac57-0c50b22a7240" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_88088bd6-96e4-412d-abac-4abf303b72c1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1d01762f-8f09-46e5-ac57-0c50b22a7240" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_88088bd6-96e4-412d-abac-4abf303b72c1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_f2695ebb-cb1a-4b71-900e-26a359804301" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1d01762f-8f09-46e5-ac57-0c50b22a7240" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_f2695ebb-cb1a-4b71-900e-26a359804301" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_b38a77ac-d7b7-4d2c-95fd-4c86925054bd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1d01762f-8f09-46e5-ac57-0c50b22a7240" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_b38a77ac-d7b7-4d2c-95fd-4c86925054bd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_81b0d54d-c8e0-4a9d-b1a5-bc51189b7329" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1d01762f-8f09-46e5-ac57-0c50b22a7240" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_81b0d54d-c8e0-4a9d-b1a5-bc51189b7329" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DefinedBenefitPlanMarkToMarketAdjustment_6b700421-a1ad-4924-b76e-dc002103f8ca" xlink:href="bwxt-20251231.xsd#bwxt_DefinedBenefitPlanMarkToMarketAdjustment"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1d01762f-8f09-46e5-ac57-0c50b22a7240" xlink:to="loc_bwxt_DefinedBenefitPlanMarkToMarketAdjustment_6b700421-a1ad-4924-b76e-dc002103f8ca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_853acc58-e632-45e3-a556-52ec5045169f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_1d01762f-8f09-46e5-ac57-0c50b22a7240" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_853acc58-e632-45e3-a556-52ec5045169f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsSummaryofAdditionalInformationDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#PensionPlansandPostretirementBenefitsSummaryofAdditionalInformationDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsSummaryofAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_918a623d-9089-440d-95f6-8365c7d88b0b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable_3ebe2edd-237a-4f1e-89b6-307e1c8e3641" xlink:href="bwxt-20251231.xsd#bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_918a623d-9089-440d-95f6-8365c7d88b0b" xlink:to="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable_3ebe2edd-237a-4f1e-89b6-307e1c8e3641" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_c2093331-dc42-457f-946a-89853c173877" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable_3ebe2edd-237a-4f1e-89b6-307e1c8e3641" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_c2093331-dc42-457f-946a-89853c173877" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_206a434f-3872-4784-9e70-56d87ed36e86" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_c2093331-dc42-457f-946a-89853c173877" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_206a434f-3872-4784-9e70-56d87ed36e86" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_402b1d9b-490b-4a8b-953b-96737d4a905d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_206a434f-3872-4784-9e70-56d87ed36e86" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_402b1d9b-490b-4a8b-953b-96737d4a905d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_04a5354c-b3e4-4f80-8064-927735a13d38" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_206a434f-3872-4784-9e70-56d87ed36e86" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_04a5354c-b3e4-4f80-8064-927735a13d38" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_d2e7bb9b-75c4-461e-aaed-9bdac2a32f1c" xlink:href="bwxt-20251231.xsd#bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable_3ebe2edd-237a-4f1e-89b6-307e1c8e3641" xlink:to="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_d2e7bb9b-75c4-461e-aaed-9bdac2a32f1c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax_39ca6680-2cda-4a6e-9baf-426c78fdb742" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_d2e7bb9b-75c4-461e-aaed-9bdac2a32f1c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax_39ca6680-2cda-4a6e-9baf-426c78fdb742" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsWeightedAverageAssumptionsDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#PensionPlansandPostretirementBenefitsWeightedAverageAssumptionsDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsWeightedAverageAssumptionsDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_4e786179-680a-4123-b0cf-7bff9cc7da18" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable_99123d8c-c07f-4359-8431-aad35d6f560c" xlink:href="bwxt-20251231.xsd#bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_4e786179-680a-4123-b0cf-7bff9cc7da18" xlink:to="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable_99123d8c-c07f-4359-8431-aad35d6f560c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_083d0fa6-0be6-40f0-8b51-42d2a38ae6fe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable_99123d8c-c07f-4359-8431-aad35d6f560c" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_083d0fa6-0be6-40f0-8b51-42d2a38ae6fe" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_4e5890a8-4379-40ec-8655-19cf3bd11641" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_083d0fa6-0be6-40f0-8b51-42d2a38ae6fe" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_4e5890a8-4379-40ec-8655-19cf3bd11641" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_1507ebb2-9288-458a-b68e-14fa60ff2a16" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_4e5890a8-4379-40ec-8655-19cf3bd11641" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_1507ebb2-9288-458a-b68e-14fa60ff2a16" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_7c6fc59d-9c8f-43e4-943b-1d1d55b993d9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_4e5890a8-4379-40ec-8655-19cf3bd11641" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_7c6fc59d-9c8f-43e4-943b-1d1d55b993d9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_7d07c3c8-67d6-42b9-9ef6-57581e3539cb" xlink:href="bwxt-20251231.xsd#bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable_99123d8c-c07f-4359-8431-aad35d6f560c" xlink:to="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_7d07c3c8-67d6-42b9-9ef6-57581e3539cb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_ae0c25a3-7bc3-48b1-a676-aa013810e4ca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_7d07c3c8-67d6-42b9-9ef6-57581e3539cb" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_ae0c25a3-7bc3-48b1-a676-aa013810e4ca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_43a9f0b6-e2d3-441a-b0e6-e83639260f8e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_ae0c25a3-7bc3-48b1-a676-aa013810e4ca" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_43a9f0b6-e2d3-441a-b0e6-e83639260f8e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateToDetermineInterestCost_c3627c0e-fdbc-43a7-b11d-f6239ce7d358" xlink:href="bwxt-20251231.xsd#bwxt_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateToDetermineInterestCost"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_ae0c25a3-7bc3-48b1-a676-aa013810e4ca" xlink:to="loc_bwxt_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateToDetermineInterestCost_c3627c0e-fdbc-43a7-b11d-f6239ce7d358" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_2fd4309f-70a3-4fb0-952d-3bb79ef6d66b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_ae0c25a3-7bc3-48b1-a676-aa013810e4ca" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_2fd4309f-70a3-4fb0-952d-3bb79ef6d66b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsAssumedHealthCareCostTrendRatesDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#PensionPlansandPostretirementBenefitsAssumedHealthCareCostTrendRatesDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsAssumedHealthCareCostTrendRatesDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_13c17a16-4db7-4f56-a4f1-f8d3373ca7c0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_0230502b-066b-4a15-9af3-fb8f04fd1450" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_13c17a16-4db7-4f56-a4f1-f8d3373ca7c0" xlink:to="loc_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_0230502b-066b-4a15-9af3-fb8f04fd1450" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_948151ff-3b1f-4bd6-a5c5-ea1f3d5d31e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_13c17a16-4db7-4f56-a4f1-f8d3373ca7c0" xlink:to="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_948151ff-3b1f-4bd6-a5c5-ea1f3d5d31e5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_9cc70c28-847c-4f90-bc7c-06fd86dc1a68" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_13c17a16-4db7-4f56-a4f1-f8d3373ca7c0" xlink:to="loc_us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate_9cc70c28-847c-4f90-bc7c-06fd86dc1a68" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsPlanAssetAllocationsbyAssetCategoryDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#PensionPlansandPostretirementBenefitsPlanAssetAllocationsbyAssetCategoryDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsPlanAssetAllocationsbyAssetCategoryDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_e344699c-e0f0-41f9-af2e-bf4f26cdae5e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_a11f9ed4-926c-49b4-be18-7e5537e9b0e8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_e344699c-e0f0-41f9-af2e-bf4f26cdae5e" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_a11f9ed4-926c-49b4-be18-7e5537e9b0e8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_1348d66d-2683-4ff0-b859-c6fab3705fea" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanSponsorLocationAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_a11f9ed4-926c-49b4-be18-7e5537e9b0e8" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_1348d66d-2683-4ff0-b859-c6fab3705fea" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_21f90d62-7795-487f-9bf7-48aae92bc271" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_1348d66d-2683-4ff0-b859-c6fab3705fea" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_21f90d62-7795-487f-9bf7-48aae92bc271" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticPlanMember_aae24cfe-bf06-4e66-8174-97dc4e3df6db" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DomesticPlanMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_21f90d62-7795-487f-9bf7-48aae92bc271" xlink:to="loc_us-gaap_DomesticPlanMember_aae24cfe-bf06-4e66-8174-97dc4e3df6db" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_056d7b97-bfd7-42c4-8845-36ddc25b8ee5" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DomesticPlanMember_aae24cfe-bf06-4e66-8174-97dc4e3df6db" xlink:to="loc_country_US_056d7b97-bfd7-42c4-8845-36ddc25b8ee5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignPlanMember_2d075747-334c-42ac-8b10-fa3a759208e6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignPlanMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_21f90d62-7795-487f-9bf7-48aae92bc271" xlink:to="loc_us-gaap_ForeignPlanMember_2d075747-334c-42ac-8b10-fa3a759208e6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CA_bfefefa7-320d-4890-a66b-f75e05312431" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CA"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ForeignPlanMember_2d075747-334c-42ac-8b10-fa3a759208e6" xlink:to="loc_country_CA_bfefefa7-320d-4890-a66b-f75e05312431" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_6b354485-7893-4e6d-9b95-b9d2247f52a2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_a11f9ed4-926c-49b4-be18-7e5537e9b0e8" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_6b354485-7893-4e6d-9b95-b9d2247f52a2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_f1cfdf00-4580-4bea-8802-91db50c492bf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_6b354485-7893-4e6d-9b95-b9d2247f52a2" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_f1cfdf00-4580-4bea-8802-91db50c492bf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_b70443a0-aba9-46f3-b139-a6bb66dfcd1a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_f1cfdf00-4580-4bea-8802-91db50c492bf" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_b70443a0-aba9-46f3-b139-a6bb66dfcd1a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_157750a0-f3ed-49e8-82b5-00b3a52232af" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_f1cfdf00-4580-4bea-8802-91db50c492bf" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_157750a0-f3ed-49e8-82b5-00b3a52232af" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_7048f2c0-d9a7-4220-a3f7-679e5762b14b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_a11f9ed4-926c-49b4-be18-7e5537e9b0e8" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_7048f2c0-d9a7-4220-a3f7-679e5762b14b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_ac5fbf5a-9d5d-4925-a026-8e83a485925b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_7048f2c0-d9a7-4220-a3f7-679e5762b14b" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_ac5fbf5a-9d5d-4925-a026-8e83a485925b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_UsGovernmentSecuritiesMember_bfa3f23e-e31c-4012-8a72-6e91e7e8b501" xlink:href="bwxt-20251231.xsd#bwxt_UsGovernmentSecuritiesMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ac5fbf5a-9d5d-4925-a026-8e83a485925b" xlink:to="loc_bwxt_UsGovernmentSecuritiesMember_bfa3f23e-e31c-4012-8a72-6e91e7e8b501" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CommingledAndMutualFundsMember_b07d6b0f-fdb1-4956-8df2-b5e4ab25d5e2" xlink:href="bwxt-20251231.xsd#bwxt_CommingledAndMutualFundsMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ac5fbf5a-9d5d-4925-a026-8e83a485925b" xlink:to="loc_bwxt_CommingledAndMutualFundsMember_b07d6b0f-fdb1-4956-8df2-b5e4ab25d5e2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateMember_dfc9e17b-72af-4f2d-a744-81f0715b6ccf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RealEstateMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ac5fbf5a-9d5d-4925-a026-8e83a485925b" xlink:to="loc_us-gaap_RealEstateMember_dfc9e17b-72af-4f2d-a744-81f0715b6ccf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DiversifiedCreditMember_b46a4eb9-69cf-4d02-b40c-27fc84216cef" xlink:href="bwxt-20251231.xsd#bwxt_DiversifiedCreditMember"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ac5fbf5a-9d5d-4925-a026-8e83a485925b" xlink:to="loc_bwxt_DiversifiedCreditMember_b46a4eb9-69cf-4d02-b40c-27fc84216cef" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_FixedIncomeExcludingUSGovernmentSecuritiesMember_d0969032-a86f-4e88-88d7-9011698b587e" xlink:href="bwxt-20251231.xsd#bwxt_FixedIncomeExcludingUSGovernmentSecuritiesMember"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ac5fbf5a-9d5d-4925-a026-8e83a485925b" xlink:to="loc_bwxt_FixedIncomeExcludingUSGovernmentSecuritiesMember_d0969032-a86f-4e88-88d7-9011698b587e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_PartnershipsWithSecurityHoldingsMember_ad78da93-9b65-434e-866a-0b3e78c81b08" xlink:href="bwxt-20251231.xsd#bwxt_PartnershipsWithSecurityHoldingsMember"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ac5fbf5a-9d5d-4925-a026-8e83a485925b" xlink:to="loc_bwxt_PartnershipsWithSecurityHoldingsMember_ad78da93-9b65-434e-866a-0b3e78c81b08" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FixedIncomeFundsMember_27b65e0d-0655-49d8-9d23-5b40d7366f37" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FixedIncomeFundsMember"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ac5fbf5a-9d5d-4925-a026-8e83a485925b" xlink:to="loc_us-gaap_FixedIncomeFundsMember_27b65e0d-0655-49d8-9d23-5b40d7366f37" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_EquitySecuritiesAndCommingledMutualFundsMember_b822c9a3-ab83-4a9d-a6c4-6202936b366a" xlink:href="bwxt-20251231.xsd#bwxt_EquitySecuritiesAndCommingledMutualFundsMember"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ac5fbf5a-9d5d-4925-a026-8e83a485925b" xlink:to="loc_bwxt_EquitySecuritiesAndCommingledMutualFundsMember_b822c9a3-ab83-4a9d-a6c4-6202936b366a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CashAndAccruedItemsMember_019c8ad9-270e-75a4-b7d4-69ac32ee3390" xlink:href="bwxt-20251231.xsd#bwxt_CashAndAccruedItemsMember"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ac5fbf5a-9d5d-4925-a026-8e83a485925b" xlink:to="loc_bwxt_CashAndAccruedItemsMember_019c8ad9-270e-75a4-b7d4-69ac32ee3390" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CashAndOtherAssetCategoryMember_019c8aea-684d-79ba-8bb7-a3e67d8219a5" xlink:href="bwxt-20251231.xsd#bwxt_CashAndOtherAssetCategoryMember"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ac5fbf5a-9d5d-4925-a026-8e83a485925b" xlink:to="loc_bwxt_CashAndOtherAssetCategoryMember_019c8aea-684d-79ba-8bb7-a3e67d8219a5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_54449e52-1951-4cdc-8820-d9f3979b7c2a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_a11f9ed4-926c-49b4-be18-7e5537e9b0e8" xlink:to="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_54449e52-1951-4cdc-8820-d9f3979b7c2a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations_2dae5b6b-2ad2-43ce-8544-b559c45d3658" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_54449e52-1951-4cdc-8820-d9f3979b7c2a" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations_2dae5b6b-2ad2-43ce-8544-b559c45d3658" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsTargetAllocationbyAssetClassDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#PensionPlansandPostretirementBenefitsTargetAllocationbyAssetClassDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsTargetAllocationbyAssetClassDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_06fe718f-f65d-4200-9a00-16be6887a887" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9b3f838a-3ac6-457a-b47c-4c11feac3341" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_06fe718f-f65d-4200-9a00-16be6887a887" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9b3f838a-3ac6-457a-b47c-4c11feac3341" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_ce49b604-3ea7-4bf4-9a21-4a8768de8f09" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9b3f838a-3ac6-457a-b47c-4c11feac3341" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_ce49b604-3ea7-4bf4-9a21-4a8768de8f09" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_de3c6515-f46b-44d8-88f3-5ea16a170066" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_ce49b604-3ea7-4bf4-9a21-4a8768de8f09" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_de3c6515-f46b-44d8-88f3-5ea16a170066" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_78186ab9-8ba8-4b5a-af7a-f5bd7af541a5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_de3c6515-f46b-44d8-88f3-5ea16a170066" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_78186ab9-8ba8-4b5a-af7a-f5bd7af541a5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_24583a9c-1776-43f2-a459-06988dcbe335" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_de3c6515-f46b-44d8-88f3-5ea16a170066" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_24583a9c-1776-43f2-a459-06988dcbe335" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_0c3941d5-c682-4260-bc46-f83941d77b5a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanSponsorLocationAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9b3f838a-3ac6-457a-b47c-4c11feac3341" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_0c3941d5-c682-4260-bc46-f83941d77b5a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_acb689dd-77dc-4fb8-be4e-7b7e11353423" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_0c3941d5-c682-4260-bc46-f83941d77b5a" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_acb689dd-77dc-4fb8-be4e-7b7e11353423" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticPlanMember_84a67847-0cce-4566-bc2f-03972cc6e426" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DomesticPlanMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_acb689dd-77dc-4fb8-be4e-7b7e11353423" xlink:to="loc_us-gaap_DomesticPlanMember_84a67847-0cce-4566-bc2f-03972cc6e426" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_4a18ac30-08b0-4446-afef-495e5642ada0" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DomesticPlanMember_84a67847-0cce-4566-bc2f-03972cc6e426" xlink:to="loc_country_US_4a18ac30-08b0-4446-afef-495e5642ada0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignPlanMember_29769968-03fc-45a4-8091-5607e2096d87" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignPlanMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_acb689dd-77dc-4fb8-be4e-7b7e11353423" xlink:to="loc_us-gaap_ForeignPlanMember_29769968-03fc-45a4-8091-5607e2096d87" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CA_a10ae279-9d0d-4c2d-8e2d-c01bf9c433d6" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CA"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ForeignPlanMember_29769968-03fc-45a4-8091-5607e2096d87" xlink:to="loc_country_CA_a10ae279-9d0d-4c2d-8e2d-c01bf9c433d6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_0a764ece-9477-44ed-bd6f-851e21e5f93b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9b3f838a-3ac6-457a-b47c-4c11feac3341" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_0a764ece-9477-44ed-bd6f-851e21e5f93b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_21fbb4e8-902d-4637-ac69-1a4b2276bb1a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_0a764ece-9477-44ed-bd6f-851e21e5f93b" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_21fbb4e8-902d-4637-ac69-1a4b2276bb1a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FixedIncomeFundsMember_df0bc627-f794-49e9-b83f-f73a82744f13" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FixedIncomeFundsMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_21fbb4e8-902d-4637-ac69-1a4b2276bb1a" xlink:to="loc_us-gaap_FixedIncomeFundsMember_df0bc627-f794-49e9-b83f-f73a82744f13" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityFundsMember_8c053162-fe7e-4341-b18f-a3f216fb5ddc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityFundsMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_21fbb4e8-902d-4637-ac69-1a4b2276bb1a" xlink:to="loc_us-gaap_EquityFundsMember_8c053162-fe7e-4341-b18f-a3f216fb5ddc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_OtherAssetCategoryMember_a2c5196c-2af4-433f-90da-789f46c5d576" xlink:href="bwxt-20251231.xsd#bwxt_OtherAssetCategoryMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_21fbb4e8-902d-4637-ac69-1a4b2276bb1a" xlink:to="loc_bwxt_OtherAssetCategoryMember_a2c5196c-2af4-433f-90da-789f46c5d576" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CashAndOtherAssetCategoryMember_019c8ae9-f84b-709a-bd70-fed95dffd6eb" xlink:href="bwxt-20251231.xsd#bwxt_CashAndOtherAssetCategoryMember"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_21fbb4e8-902d-4637-ac69-1a4b2276bb1a" xlink:to="loc_bwxt_CashAndOtherAssetCategoryMember_019c8ae9-f84b-709a-bd70-fed95dffd6eb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_437d9ce0-7f0b-4453-ad80-a4a0464ed339" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9b3f838a-3ac6-457a-b47c-4c11feac3341" xlink:to="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_437d9ce0-7f0b-4453-ad80-a4a0464ed339" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_2dbbb993-c315-4bc4-97e7-c5e8ddad5710" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_437d9ce0-7f0b-4453-ad80-a4a0464ed339" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_2dbbb993-c315-4bc4-97e7-c5e8ddad5710" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsSummaryofTotalInvestmentsMeasuredatFairValueDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#PensionPlansandPostretirementBenefitsSummaryofTotalInvestmentsMeasuredatFairValueDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsSummaryofTotalInvestmentsMeasuredatFairValueDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_bf983a4f-cf91-4f7d-bfac-12f095738181" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentTable_995b348c-dd23-4c95-995a-4d092a22c94c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_bf983a4f-cf91-4f7d-bfac-12f095738181" xlink:to="loc_us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentTable_995b348c-dd23-4c95-995a-4d092a22c94c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_d031537c-ea34-46db-b9c5-bcf73a0d8f73" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentTable_995b348c-dd23-4c95-995a-4d092a22c94c" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_d031537c-ea34-46db-b9c5-bcf73a0d8f73" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8accd588-4c5c-476a-9754-f101c8a6a7ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_d031537c-ea34-46db-b9c5-bcf73a0d8f73" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8accd588-4c5c-476a-9754-f101c8a6a7ce" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_5b7e7e0d-d434-4777-b745-1af78c2a7cd4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8accd588-4c5c-476a-9754-f101c8a6a7ce" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_5b7e7e0d-d434-4777-b745-1af78c2a7cd4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_8c3f770a-fb75-4a2e-a8b6-40a342b58fc2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8accd588-4c5c-476a-9754-f101c8a6a7ce" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_8c3f770a-fb75-4a2e-a8b6-40a342b58fc2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_62c0ca51-faef-4739-b6b0-a580d0caf416" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8accd588-4c5c-476a-9754-f101c8a6a7ce" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_62c0ca51-faef-4739-b6b0-a580d0caf416" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_d452cd08-0fc6-402c-9165-5d42f93a0298" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentTable_995b348c-dd23-4c95-995a-4d092a22c94c" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_d452cd08-0fc6-402c-9165-5d42f93a0298" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_f97a98e6-140a-43bb-a125-e4b1c2636eca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_d452cd08-0fc6-402c-9165-5d42f93a0298" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_f97a98e6-140a-43bb-a125-e4b1c2636eca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_UsGovernmentSecuritiesMember_1add3ccc-c339-4136-a9c7-5ba2b37f5ccb" xlink:href="bwxt-20251231.xsd#bwxt_UsGovernmentSecuritiesMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_f97a98e6-140a-43bb-a125-e4b1c2636eca" xlink:to="loc_bwxt_UsGovernmentSecuritiesMember_1add3ccc-c339-4136-a9c7-5ba2b37f5ccb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CommingledAndMutualFundsMember_87e414e0-899e-4974-a0a4-2c13d327e679" xlink:href="bwxt-20251231.xsd#bwxt_CommingledAndMutualFundsMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_f97a98e6-140a-43bb-a125-e4b1c2636eca" xlink:to="loc_bwxt_CommingledAndMutualFundsMember_87e414e0-899e-4974-a0a4-2c13d327e679" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateMember_a73cbce3-8137-499a-8538-14db2c40b177" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RealEstateMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_f97a98e6-140a-43bb-a125-e4b1c2636eca" xlink:to="loc_us-gaap_RealEstateMember_a73cbce3-8137-499a-8538-14db2c40b177" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DiversifiedCreditMember_514395a4-bb84-47b4-81bf-ad3e6506cd1c" xlink:href="bwxt-20251231.xsd#bwxt_DiversifiedCreditMember"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_f97a98e6-140a-43bb-a125-e4b1c2636eca" xlink:to="loc_bwxt_DiversifiedCreditMember_514395a4-bb84-47b4-81bf-ad3e6506cd1c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FixedIncomeFundsMember_e5baebcf-e9dc-4d92-aa3c-461dbcb628e0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FixedIncomeFundsMember"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_f97a98e6-140a-43bb-a125-e4b1c2636eca" xlink:to="loc_us-gaap_FixedIncomeFundsMember_e5baebcf-e9dc-4d92-aa3c-461dbcb628e0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_PartnershipsWithSecurityHoldingsMember_8f5d9a6a-7373-4352-bd4a-512466c796fd" xlink:href="bwxt-20251231.xsd#bwxt_PartnershipsWithSecurityHoldingsMember"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_f97a98e6-140a-43bb-a125-e4b1c2636eca" xlink:to="loc_bwxt_PartnershipsWithSecurityHoldingsMember_8f5d9a6a-7373-4352-bd4a-512466c796fd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CashAndAccruedItemsMember_ddd0036e-eecc-47c4-9ac8-fa6881de6055" xlink:href="bwxt-20251231.xsd#bwxt_CashAndAccruedItemsMember"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_f97a98e6-140a-43bb-a125-e4b1c2636eca" xlink:to="loc_bwxt_CashAndAccruedItemsMember_ddd0036e-eecc-47c4-9ac8-fa6881de6055" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentLineItems_27d0937c-8fab-4b3f-9ad6-383d5b7713ae" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentLineItems"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentTable_995b348c-dd23-4c95-995a-4d092a22c94c" xlink:to="loc_us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentLineItems_27d0937c-8fab-4b3f-9ad6-383d5b7713ae" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_a3ad9f19-a1e9-4c35-bc53-e09a0a3a1960" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentLineItems_27d0937c-8fab-4b3f-9ad6-383d5b7713ae" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_a3ad9f19-a1e9-4c35-bc53-e09a0a3a1960" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DefinedBenefitPlanAlternativeInvestmentsFairValueofPlanAssets_e796347b-a99b-4c97-a39d-4fe0d90013ba" xlink:href="bwxt-20251231.xsd#bwxt_DefinedBenefitPlanAlternativeInvestmentsFairValueofPlanAssets"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentLineItems_27d0937c-8fab-4b3f-9ad6-383d5b7713ae" xlink:to="loc_bwxt_DefinedBenefitPlanAlternativeInvestmentsFairValueofPlanAssets_e796347b-a99b-4c97-a39d-4fe0d90013ba" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsCashFlowsDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#PensionPlansandPostretirementBenefitsCashFlowsDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/PensionPlansandPostretirementBenefitsCashFlowsDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_66e983fd-2f35-4acb-a5ed-21d55281a709" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable_fa14b6d5-be1a-425d-9b77-cf09a35b4938" xlink:href="bwxt-20251231.xsd#bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CompensationAndRetirementDisclosureAbstract_66e983fd-2f35-4acb-a5ed-21d55281a709" xlink:to="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable_fa14b6d5-be1a-425d-9b77-cf09a35b4938" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_b66438ea-4cd7-4d61-a4e4-6f823296157b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanSponsorLocationAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable_fa14b6d5-be1a-425d-9b77-cf09a35b4938" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_b66438ea-4cd7-4d61-a4e4-6f823296157b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_2acb2a19-7950-458a-b3b5-f6f0b1761edf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_b66438ea-4cd7-4d61-a4e4-6f823296157b" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_2acb2a19-7950-458a-b3b5-f6f0b1761edf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticPlanMember_fd67b53d-887c-49fe-89b4-113d686036e6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DomesticPlanMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_2acb2a19-7950-458a-b3b5-f6f0b1761edf" xlink:to="loc_us-gaap_DomesticPlanMember_fd67b53d-887c-49fe-89b4-113d686036e6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_02e3fd42-2111-4b2e-bd5f-b03047450f68" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DomesticPlanMember_fd67b53d-887c-49fe-89b4-113d686036e6" xlink:to="loc_country_US_02e3fd42-2111-4b2e-bd5f-b03047450f68" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignPlanMember_2e7bea66-3da8-4555-bcd7-254215387c7e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignPlanMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_2acb2a19-7950-458a-b3b5-f6f0b1761edf" xlink:to="loc_us-gaap_ForeignPlanMember_2e7bea66-3da8-4555-bcd7-254215387c7e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CA_ede3142a-0d16-460d-997c-94574f87dba7" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CA"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ForeignPlanMember_2e7bea66-3da8-4555-bcd7-254215387c7e" xlink:to="loc_country_CA_ede3142a-0d16-460d-997c-94574f87dba7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_30df76cf-df8e-4b53-aa04-22fe3a3c7886" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable_fa14b6d5-be1a-425d-9b77-cf09a35b4938" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_30df76cf-df8e-4b53-aa04-22fe3a3c7886" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_ac86454a-e2a5-43bc-a387-9d91e895c0f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_30df76cf-df8e-4b53-aa04-22fe3a3c7886" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_ac86454a-e2a5-43bc-a387-9d91e895c0f0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_dcc88c1d-09e9-46f8-9284-3bf9f0af1e43" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_ac86454a-e2a5-43bc-a387-9d91e895c0f0" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_dcc88c1d-09e9-46f8-9284-3bf9f0af1e43" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_668a53ea-ef69-41fe-a541-2a295540d954" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_ac86454a-e2a5-43bc-a387-9d91e895c0f0" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_668a53ea-ef69-41fe-a541-2a295540d954" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_e9408101-f336-41a0-908d-6d2547490a69" xlink:href="bwxt-20251231.xsd#bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsTable_fa14b6d5-be1a-425d-9b77-cf09a35b4938" xlink:to="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_e9408101-f336-41a0-908d-6d2547490a69" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEstimatedFutureEmployerContributionsAbstract_b02256f1-df2d-4eaa-be97-bb0de1220738" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanEstimatedFutureEmployerContributionsAbstract"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_e9408101-f336-41a0-908d-6d2547490a69" xlink:to="loc_us-gaap_DefinedBenefitPlanEstimatedFutureEmployerContributionsAbstract_b02256f1-df2d-4eaa-be97-bb0de1220738" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_0b2288b9-1532-4e57-9554-4a343ee47d06" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureEmployerContributionsAbstract_b02256f1-df2d-4eaa-be97-bb0de1220738" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_0b2288b9-1532-4e57-9554-4a343ee47d06" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_c5edcb40-2652-4655-b194-977185137fe8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems_e9408101-f336-41a0-908d-6d2547490a69" xlink:to="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_c5edcb40-2652-4655-b194-977185137fe8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_648954d9-4f17-4d3a-864f-b52edf0ff202" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_c5edcb40-2652-4655-b194-977185137fe8" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_648954d9-4f17-4d3a-864f-b52edf0ff202" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_7f69bdb2-85ad-4cf1-8cfa-2adcd8ad1079" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_c5edcb40-2652-4655-b194-977185137fe8" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_7f69bdb2-85ad-4cf1-8cfa-2adcd8ad1079" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_01516680-b8cc-470f-9f46-add38fbf7b0c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_c5edcb40-2652-4655-b194-977185137fe8" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_01516680-b8cc-470f-9f46-add38fbf7b0c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_cb4f081a-4fb6-43dd-9671-861244b206dd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_c5edcb40-2652-4655-b194-977185137fe8" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_cb4f081a-4fb6-43dd-9671-861244b206dd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_f55f0694-ebe4-4402-8434-04caca4aa370" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_c5edcb40-2652-4655-b194-977185137fe8" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_f55f0694-ebe4-4402-8434-04caca4aa370" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_277ff6e4-59b9-4366-8676-f8002f4eb690" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DefinedBenefitPlanEstimatedFutureBenefitPaymentsAbstract_c5edcb40-2652-4655-b194-977185137fe8" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_277ff6e4-59b9-4366-8676-f8002f4eb690" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/CapitalStockDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#CapitalStockDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/CapitalStockDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityAbstract_eec3b45d-1479-40db-a228-9e6a7f052e9c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CapitalStockTable_43c2df39-4b39-4dc2-b140-b26256eb2e80" xlink:href="bwxt-20251231.xsd#bwxt_CapitalStockTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityAbstract_eec3b45d-1479-40db-a228-9e6a7f052e9c" xlink:to="loc_bwxt_CapitalStockTable_43c2df39-4b39-4dc2-b140-b26256eb2e80" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ShareRepurchaseProgramAxis_35dbb9c9-6a02-4642-b0b6-a3c14823a1a8" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ShareRepurchaseProgramAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_CapitalStockTable_43c2df39-4b39-4dc2-b140-b26256eb2e80" xlink:to="loc_srt_ShareRepurchaseProgramAxis_35dbb9c9-6a02-4642-b0b6-a3c14823a1a8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ShareRepurchaseProgramDomain_c3e18c60-52e3-4529-af6a-afe599222183" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ShareRepurchaseProgramDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ShareRepurchaseProgramAxis_35dbb9c9-6a02-4642-b0b6-a3c14823a1a8" xlink:to="loc_srt_ShareRepurchaseProgramDomain_c3e18c60-52e3-4529-af6a-afe599222183" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ShareRepurchaseProgramMember_ff1199f6-8c15-4271-8e4a-56c29b4537b5" xlink:href="bwxt-20251231.xsd#bwxt_ShareRepurchaseProgramMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ShareRepurchaseProgramDomain_c3e18c60-52e3-4529-af6a-afe599222183" xlink:to="loc_bwxt_ShareRepurchaseProgramMember_ff1199f6-8c15-4271-8e4a-56c29b4537b5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CapitalStockLineItems_68eb833d-1e21-410f-9aba-ea100b07951a" xlink:href="bwxt-20251231.xsd#bwxt_CapitalStockLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_CapitalStockTable_43c2df39-4b39-4dc2-b140-b26256eb2e80" xlink:to="loc_bwxt_CapitalStockLineItems_68eb833d-1e21-410f-9aba-ea100b07951a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StockRepurchaseProgramAuthorizedAmount1_cc491b7c-557f-428d-a1eb-cd637faf3479" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StockRepurchaseProgramAuthorizedAmount1"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_CapitalStockLineItems_68eb833d-1e21-410f-9aba-ea100b07951a" xlink:to="loc_srt_StockRepurchaseProgramAuthorizedAmount1_cc491b7c-557f-428d-a1eb-cd637faf3479" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesAcquired_a7136b72-65a4-4e8d-ac15-f0b2e4c2f37c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockSharesAcquired"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_CapitalStockLineItems_68eb833d-1e21-410f-9aba-ea100b07951a" xlink:to="loc_us-gaap_TreasuryStockSharesAcquired_a7136b72-65a4-4e8d-ac15-f0b2e4c2f37c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_d4701583-067f-49f4-b0a8-500cf6c4ad13" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_CapitalStockLineItems_68eb833d-1e21-410f-9aba-ea100b07951a" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_d4701583-067f-49f4-b0a8-500cf6c4ad13" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_1c9ae5b4-1276-4d46-9d8d-18ff2d2e946d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_CapitalStockLineItems_68eb833d-1e21-410f-9aba-ea100b07951a" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1_1c9ae5b4-1276-4d46-9d8d-18ff2d2e946d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/StockBasedCompensationAdditionalInformationDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#StockBasedCompensationAdditionalInformationDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/StockBasedCompensationAdditionalInformationDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_d28ea927-5ced-4114-bde7-2fcc4e15d4d0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8ce80117-5126-413e-9def-4f0f0f75d986" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_d28ea927-5ced-4114-bde7-2fcc4e15d4d0" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8ce80117-5126-413e-9def-4f0f0f75d986" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_fc0ee745-bb16-4202-b82f-7f9b2085663d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PlanNameAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8ce80117-5126-413e-9def-4f0f0f75d986" xlink:to="loc_us-gaap_PlanNameAxis_fc0ee745-bb16-4202-b82f-7f9b2085663d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_6f8c41fa-e58c-49e2-a175-615f316837cb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PlanNameDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameAxis_fc0ee745-bb16-4202-b82f-7f9b2085663d" xlink:to="loc_us-gaap_PlanNameDomain_6f8c41fa-e58c-49e2-a175-615f316837cb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_TwentyTwentyOmnibusIncentivePlanMember_080b2ac1-bfaf-4133-9373-9493b3e6bd9e" xlink:href="bwxt-20251231.xsd#bwxt_TwentyTwentyOmnibusIncentivePlanMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_6f8c41fa-e58c-49e2-a175-615f316837cb" xlink:to="loc_bwxt_TwentyTwentyOmnibusIncentivePlanMember_080b2ac1-bfaf-4133-9373-9493b3e6bd9e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_TwoThousandAndTenLongTermIncentivePlanMember_d2da6e90-94e3-457c-9b9d-e88404e0bce7" xlink:href="bwxt-20251231.xsd#bwxt_TwoThousandAndTenLongTermIncentivePlanMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_6f8c41fa-e58c-49e2-a175-615f316837cb" xlink:to="loc_bwxt_TwoThousandAndTenLongTermIncentivePlanMember_d2da6e90-94e3-457c-9b9d-e88404e0bce7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_TwoThousandTwelveLongTermIncentivePlanMember_b70522e7-3ade-4594-8617-5a3e0a0d7a3d" xlink:href="bwxt-20251231.xsd#bwxt_TwoThousandTwelveLongTermIncentivePlanMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_6f8c41fa-e58c-49e2-a175-615f316837cb" xlink:to="loc_bwxt_TwoThousandTwelveLongTermIncentivePlanMember_b70522e7-3ade-4594-8617-5a3e0a0d7a3d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_a206a0ce-1395-457b-855a-c2b1c5bec18c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardTypeAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8ce80117-5126-413e-9def-4f0f0f75d986" xlink:to="loc_us-gaap_AwardTypeAxis_a206a0ce-1395-457b-855a-c2b1c5bec18c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9a27dd64-7f91-460a-88df-4b7ba9169df6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AwardTypeAxis_a206a0ce-1395-457b-855a-c2b1c5bec18c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9a27dd64-7f91-460a-88df-4b7ba9169df6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_45ea6090-aca7-4ca0-abc9-aa04d38dae67" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeStockOptionMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9a27dd64-7f91-460a-88df-4b7ba9169df6" xlink:to="loc_us-gaap_EmployeeStockOptionMember_45ea6090-aca7-4ca0-abc9-aa04d38dae67" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_91deff18-c8be-4ba9-8c5a-d2a3cb9094da" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9a27dd64-7f91-460a-88df-4b7ba9169df6" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_91deff18-c8be-4ba9-8c5a-d2a3cb9094da" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_76e28c3c-d68d-4db7-a218-3df52e8e7431" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PerformanceSharesMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9a27dd64-7f91-460a-88df-4b7ba9169df6" xlink:to="loc_us-gaap_PerformanceSharesMember_76e28c3c-d68d-4db7-a218-3df52e8e7431" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_743043af-7675-422f-8e97-70ce08a38980" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8ce80117-5126-413e-9def-4f0f0f75d986" xlink:to="loc_srt_RangeAxis_743043af-7675-422f-8e97-70ce08a38980" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_166e0eae-b1d8-4cbf-9d85-8f6368fd9ca9" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_743043af-7675-422f-8e97-70ce08a38980" xlink:to="loc_srt_RangeMember_166e0eae-b1d8-4cbf-9d85-8f6368fd9ca9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_2a83c9eb-dfb5-4906-85e1-0c6523e13cf5" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_166e0eae-b1d8-4cbf-9d85-8f6368fd9ca9" xlink:to="loc_srt_MinimumMember_2a83c9eb-dfb5-4906-85e1-0c6523e13cf5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_d1855f82-74b9-4a05-ac38-a7984ee47bc6" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_166e0eae-b1d8-4cbf-9d85-8f6368fd9ca9" xlink:to="loc_srt_MaximumMember_d1855f82-74b9-4a05-ac38-a7984ee47bc6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_WeightedAverageMember_01531e3d-bcb6-4971-9202-d3b31a752ed6" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_WeightedAverageMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_166e0eae-b1d8-4cbf-9d85-8f6368fd9ca9" xlink:to="loc_srt_WeightedAverageMember_01531e3d-bcb6-4971-9202-d3b31a752ed6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8ce80117-5126-413e-9def-4f0f0f75d986" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized_594c5312-7c7b-47cd-9618-adc1ee2a296d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized_594c5312-7c7b-47cd-9618-adc1ee2a296d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_MinimumPercentageOfFairMarketValueClosingPrice_355ab841-6aae-4a05-b5d2-572d828e8731" xlink:href="bwxt-20251231.xsd#bwxt_MinimumPercentageOfFairMarketValueClosingPrice"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_bwxt_MinimumPercentageOfFairMarketValueClosingPrice_355ab841-6aae-4a05-b5d2-572d828e8731" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationPeriodMaximum_453f60a9-43d6-4d87-a237-b11433a0c7a0" xlink:href="bwxt-20251231.xsd#bwxt_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationPeriodMaximum"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_bwxt_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationPeriodMaximum_453f60a9-43d6-4d87-a237-b11433a0c7a0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_0f15d899-b98d-4f38-ba2e-d495361aa73e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_0f15d899-b98d-4f38-ba2e-d495361aa73e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_a38e284d-42e9-4cab-83b1-89b158cfa2c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_a38e284d-42e9-4cab-83b1-89b158cfa2c7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_b0b616c1-e067-44cd-9870-3244bfdf6fa0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_b0b616c1-e067-44cd-9870-3244bfdf6fa0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_89e10f92-c2a2-4be1-a81d-2960e25e0e54" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_89e10f92-c2a2-4be1-a81d-2960e25e0e54" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_aa737714-dc68-4cf8-b03e-0a197019e68b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_aa737714-dc68-4cf8-b03e-0a197019e68b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_e4afb2c9-d4ed-4ae8-837f-3b3e57c2c0e2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_e4afb2c9-d4ed-4ae8-837f-3b3e57c2c0e2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_547d4c19-f60b-40bc-948d-ec457622829d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_547d4c19-f60b-40bc-948d-ec457622829d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions_048274b0-423c-4fe8-9030-ab1b977cae01" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions_048274b0-423c-4fe8-9030-ab1b977cae01" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedPerformancePeriod_f128bf7f-c799-4708-a2e8-5ac2c34b12b2" xlink:href="bwxt-20251231.xsd#bwxt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedPerformancePeriod"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_bwxt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedPerformancePeriod_f128bf7f-c799-4708-a2e8-5ac2c34b12b2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_71cfc013-8c97-4c98-bccb-110d0e99b15d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_71cfc013-8c97-4c98-bccb-110d0e99b15d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_8c8b4d01-4fd4-47d4-9834-109624a0bd5c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_8c8b4d01-4fd4-47d4-9834-109624a0bd5c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_394884cf-4f0c-447d-93d2-af7ad676200e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_394884cf-4f0c-447d-93d2-af7ad676200e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_877f3f8a-8cb2-4b93-b117-5611099887f7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_877f3f8a-8cb2-4b93-b117-5611099887f7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_93b8547f-4901-41c2-81d7-1b2b0e3c158b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_93b8547f-4901-41c2-81d7-1b2b0e3c158b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_42aa29bc-354d-4e0c-a4e1-756f24976ce7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_2f92fbc0-a4d4-4c5e-85c8-3c4d1218a4f3" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_42aa29bc-354d-4e0c-a4e1-756f24976ce7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/StockBasedCompensationSummarizedActivityofStockOptionsDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#StockBasedCompensationSummarizedActivityofStockOptionsDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/StockBasedCompensationSummarizedActivityofStockOptionsDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_c05a0789-342f-4e59-b4dd-a8f4b0094740" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e948fb96-da50-4187-8e39-8a720a7ea950" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_c05a0789-342f-4e59-b4dd-a8f4b0094740" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e948fb96-da50-4187-8e39-8a720a7ea950" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_b61583ce-8860-413f-a2dd-82fd7bd68665" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardTypeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e948fb96-da50-4187-8e39-8a720a7ea950" xlink:to="loc_us-gaap_AwardTypeAxis_b61583ce-8860-413f-a2dd-82fd7bd68665" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_030f734b-243d-4776-97eb-dffa5000d40f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AwardTypeAxis_b61583ce-8860-413f-a2dd-82fd7bd68665" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_030f734b-243d-4776-97eb-dffa5000d40f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_aae99b9b-ce93-4ed6-9fc1-cd0423ead2dd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeStockOptionMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_030f734b-243d-4776-97eb-dffa5000d40f" xlink:to="loc_us-gaap_EmployeeStockOptionMember_aae99b9b-ce93-4ed6-9fc1-cd0423ead2dd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e17049bc-45f6-4637-86f3-0d10b9a8312c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_e948fb96-da50-4187-8e39-8a720a7ea950" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e17049bc-45f6-4637-86f3-0d10b9a8312c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_ccb974d6-c36e-496b-a567-01bbba5194cc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e17049bc-45f6-4637-86f3-0d10b9a8312c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_ccb974d6-c36e-496b-a567-01bbba5194cc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_225800d7-5c69-4bd7-8ed8-d4b6faca9a59" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_ccb974d6-c36e-496b-a567-01bbba5194cc" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_225800d7-5c69-4bd7-8ed8-d4b6faca9a59" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_166bbbdc-23ea-4de9-bfbc-fa5bca348343" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_ccb974d6-c36e-496b-a567-01bbba5194cc" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_166bbbdc-23ea-4de9-bfbc-fa5bca348343" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_de8415eb-fcd7-415e-90c1-992b3a00caa0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_ccb974d6-c36e-496b-a567-01bbba5194cc" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_de8415eb-fcd7-415e-90c1-992b3a00caa0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_0bf72582-f3ff-438d-b1dd-ed9ece658805" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_ccb974d6-c36e-496b-a567-01bbba5194cc" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_0bf72582-f3ff-438d-b1dd-ed9ece658805" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_507d0599-091a-4ee9-9f0a-c2183b7ab085" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_ccb974d6-c36e-496b-a567-01bbba5194cc" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_507d0599-091a-4ee9-9f0a-c2183b7ab085" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_13c1d0e3-175e-4998-87f0-79b9580630ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e17049bc-45f6-4637-86f3-0d10b9a8312c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_13c1d0e3-175e-4998-87f0-79b9580630ed" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_3b0af846-af42-4834-aa48-c4464f68f865" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_13c1d0e3-175e-4998-87f0-79b9580630ed" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_3b0af846-af42-4834-aa48-c4464f68f865" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_5ab3d06c-3cec-4bd1-8da8-33e0da21c39e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_13c1d0e3-175e-4998-87f0-79b9580630ed" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_5ab3d06c-3cec-4bd1-8da8-33e0da21c39e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_3e085234-cc5b-4d2d-9886-d21316780683" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_13c1d0e3-175e-4998-87f0-79b9580630ed" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_3e085234-cc5b-4d2d-9886-d21316780683" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_d96ae590-beb0-45e4-8b01-b5b83d84a958" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_13c1d0e3-175e-4998-87f0-79b9580630ed" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_d96ae590-beb0-45e4-8b01-b5b83d84a958" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_58a2b5ed-6038-47e5-87ab-69984395f468" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_13c1d0e3-175e-4998-87f0-79b9580630ed" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_58a2b5ed-6038-47e5-87ab-69984395f468" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_a6798588-d1c4-44d3-96d9-004aa4bdc61a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e17049bc-45f6-4637-86f3-0d10b9a8312c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_a6798588-d1c4-44d3-96d9-004aa4bdc61a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_a362c3f6-7299-4af0-9617-06404a294abe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_a6798588-d1c4-44d3-96d9-004aa4bdc61a" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_a362c3f6-7299-4af0-9617-06404a294abe" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_f5124837-c5d3-4daf-88f6-2af4e7e2ad0f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_a6798588-d1c4-44d3-96d9-004aa4bdc61a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_f5124837-c5d3-4daf-88f6-2af4e7e2ad0f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_468d1f34-16d4-419d-a7d9-d8f0814716ff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_a6798588-d1c4-44d3-96d9-004aa4bdc61a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_468d1f34-16d4-419d-a7d9-d8f0814716ff" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_a8d6b4d3-b8d3-4730-b77e-0e48674e6407" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_a6798588-d1c4-44d3-96d9-004aa4bdc61a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_a8d6b4d3-b8d3-4730-b77e-0e48674e6407" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_4751ca66-383f-4e2f-a5ca-d7ad9fc3c094" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_a6798588-d1c4-44d3-96d9-004aa4bdc61a" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_4751ca66-383f-4e2f-a5ca-d7ad9fc3c094" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_fa575406-36f4-4583-9b7f-52b77b6237a1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_a6798588-d1c4-44d3-96d9-004aa4bdc61a" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_fa575406-36f4-4583-9b7f-52b77b6237a1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/StockBasedCompensationScheduleofChangesinNonvestedStockAwardsDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#StockBasedCompensationScheduleofChangesinNonvestedStockAwardsDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/StockBasedCompensationScheduleofChangesinNonvestedStockAwardsDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_11a97842-36ca-4b63-b884-6ac43c23dfd0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_f52e7c16-b0ab-43e3-82c8-849a5ad7b0cd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_11a97842-36ca-4b63-b884-6ac43c23dfd0" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_f52e7c16-b0ab-43e3-82c8-849a5ad7b0cd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_82381f7d-1da1-465a-ba94-133aab2c0952" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardTypeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_f52e7c16-b0ab-43e3-82c8-849a5ad7b0cd" xlink:to="loc_us-gaap_AwardTypeAxis_82381f7d-1da1-465a-ba94-133aab2c0952" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e154e954-3087-4b2f-acb0-09fff99d44ac" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AwardTypeAxis_82381f7d-1da1-465a-ba94-133aab2c0952" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e154e954-3087-4b2f-acb0-09fff99d44ac" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_30c737e0-1b0d-4757-bdb3-34c856f562bc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e154e954-3087-4b2f-acb0-09fff99d44ac" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_30c737e0-1b0d-4757-bdb3-34c856f562bc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_38bec400-d474-4210-ac8f-dc63ded003fb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PerformanceSharesMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e154e954-3087-4b2f-acb0-09fff99d44ac" xlink:to="loc_us-gaap_PerformanceSharesMember_38bec400-d474-4210-ac8f-dc63ded003fb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_399185ee-8575-4c7b-a10d-92a47c575145" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_f52e7c16-b0ab-43e3-82c8-849a5ad7b0cd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_399185ee-8575-4c7b-a10d-92a47c575145" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_591dbd24-9ba9-4088-9c14-fcd2c942dcaa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_399185ee-8575-4c7b-a10d-92a47c575145" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_591dbd24-9ba9-4088-9c14-fcd2c942dcaa" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_762d7af7-887f-4108-8c5d-b40203a4ec5e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_591dbd24-9ba9-4088-9c14-fcd2c942dcaa" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_762d7af7-887f-4108-8c5d-b40203a4ec5e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentToAssumedVesting_d697c3e4-c5f4-484d-8631-f064a3f3752e" xlink:href="bwxt-20251231.xsd#bwxt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentToAssumedVesting"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_591dbd24-9ba9-4088-9c14-fcd2c942dcaa" xlink:to="loc_bwxt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentToAssumedVesting_d697c3e4-c5f4-484d-8631-f064a3f3752e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_9222a448-7f1b-47bc-a0ee-efbaef487095" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_591dbd24-9ba9-4088-9c14-fcd2c942dcaa" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_9222a448-7f1b-47bc-a0ee-efbaef487095" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_464b5d18-eb16-4507-8d2f-da3908c03bfc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_591dbd24-9ba9-4088-9c14-fcd2c942dcaa" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_464b5d18-eb16-4507-8d2f-da3908c03bfc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_b6a1b9c7-fc82-4bcb-adbc-ae40acd2832b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_591dbd24-9ba9-4088-9c14-fcd2c942dcaa" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_b6a1b9c7-fc82-4bcb-adbc-ae40acd2832b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_1cd5ac45-f355-4fa0-8902-561f0add31e3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_591dbd24-9ba9-4088-9c14-fcd2c942dcaa" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_1cd5ac45-f355-4fa0-8902-561f0add31e3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_c53300c2-d4a5-42c1-92ec-f15fff73785e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_399185ee-8575-4c7b-a10d-92a47c575145" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_c53300c2-d4a5-42c1-92ec-f15fff73785e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_d3f6a492-0e49-4b90-ac2d-b6b9e404ab6b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_c53300c2-d4a5-42c1-92ec-f15fff73785e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_d3f6a492-0e49-4b90-ac2d-b6b9e404ab6b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentToAssumedVestingWeightedAverageGrantDateFairValue_c958acce-9b39-4037-86a9-bfb325c5df10" xlink:href="bwxt-20251231.xsd#bwxt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentToAssumedVestingWeightedAverageGrantDateFairValue"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_c53300c2-d4a5-42c1-92ec-f15fff73785e" xlink:to="loc_bwxt_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentToAssumedVestingWeightedAverageGrantDateFairValue_c958acce-9b39-4037-86a9-bfb325c5df10" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_058ad8d8-1aef-4caa-917b-b230743946ca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_c53300c2-d4a5-42c1-92ec-f15fff73785e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_058ad8d8-1aef-4caa-917b-b230743946ca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_135b59aa-8a7f-4c8b-86af-36a45e16286d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_c53300c2-d4a5-42c1-92ec-f15fff73785e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_135b59aa-8a7f-4c8b-86af-36a45e16286d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_ecd9b012-788a-4db8-8256-954563069f3b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_c53300c2-d4a5-42c1-92ec-f15fff73785e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_ecd9b012-788a-4db8-8256-954563069f3b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_3a9d4658-26ee-4a5b-a35b-635bdff3e5da" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_c53300c2-d4a5-42c1-92ec-f15fff73785e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_3a9d4658-26ee-4a5b-a35b-635bdff3e5da" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/CommitmentsandContingenciesDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#CommitmentsandContingenciesDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/CommitmentsandContingenciesDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_89433b29-e85e-4e93-97b1-f60f9446f725" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ContingenciesAndCommitmentsTable_3b22280d-bb50-4989-8dbc-cfb854d4b95b" xlink:href="bwxt-20251231.xsd#bwxt_ContingenciesAndCommitmentsTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_89433b29-e85e-4e93-97b1-f60f9446f725" xlink:to="loc_bwxt_ContingenciesAndCommitmentsTable_3b22280d-bb50-4989-8dbc-cfb854d4b95b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_d3b3baf6-3d77-482a-8cd5-163522998b56" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ContingenciesAndCommitmentsTable_3b22280d-bb50-4989-8dbc-cfb854d4b95b" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_d3b3baf6-3d77-482a-8cd5-163522998b56" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_94126b9f-36a1-4e35-b4e2-87fd813baa9c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_d3b3baf6-3d77-482a-8cd5-163522998b56" xlink:to="loc_us-gaap_SegmentDomain_94126b9f-36a1-4e35-b4e2-87fd813baa9c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_GovernmentOperationsSegmentMember_20da4a60-7160-483c-bb59-ae68c8d27b91" xlink:href="bwxt-20251231.xsd#bwxt_GovernmentOperationsSegmentMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_94126b9f-36a1-4e35-b4e2-87fd813baa9c" xlink:to="loc_bwxt_GovernmentOperationsSegmentMember_20da4a60-7160-483c-bb59-ae68c8d27b91" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CommercialOperationsSegmentMember_666073d3-ad08-4afe-aa31-b1a7b3fdcf51" xlink:href="bwxt-20251231.xsd#bwxt_CommercialOperationsSegmentMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_94126b9f-36a1-4e35-b4e2-87fd813baa9c" xlink:to="loc_bwxt_CommercialOperationsSegmentMember_666073d3-ad08-4afe-aa31-b1a7b3fdcf51" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_376d33be-8f28-4de1-8129-f0dd727f17cf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ContingenciesAndCommitmentsTable_3b22280d-bb50-4989-8dbc-cfb854d4b95b" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_376d33be-8f28-4de1-8129-f0dd727f17cf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_237754b5-4f27-47e4-b818-ee3f64f52648" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_376d33be-8f28-4de1-8129-f0dd727f17cf" xlink:to="loc_us-gaap_LossContingencyNatureDomain_237754b5-4f27-47e4-b818-ee3f64f52648" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_EnvironmentalMattersMember_0e45db9d-1c40-44f0-94dc-e75e6f4a43de" xlink:href="bwxt-20251231.xsd#bwxt_EnvironmentalMattersMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LossContingencyNatureDomain_237754b5-4f27-47e4-b818-ee3f64f52648" xlink:to="loc_bwxt_EnvironmentalMattersMember_0e45db9d-1c40-44f0-94dc-e75e6f4a43de" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_ContingenciesAndCommitmentsLineItems_d543c7bb-378c-443f-a71f-756fdec6c562" xlink:href="bwxt-20251231.xsd#bwxt_ContingenciesAndCommitmentsLineItems"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ContingenciesAndCommitmentsTable_3b22280d-bb50-4989-8dbc-cfb854d4b95b" xlink:to="loc_bwxt_ContingenciesAndCommitmentsLineItems_d543c7bb-378c-443f-a71f-756fdec6c562" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_NumberOfFormerNuclearFuelProcessingFacilities_790db632-80b2-4262-aa6f-5b6399a6c687" xlink:href="bwxt-20251231.xsd#bwxt_NumberOfFormerNuclearFuelProcessingFacilities"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ContingenciesAndCommitmentsLineItems_d543c7bb-378c-443f-a71f-756fdec6c562" xlink:to="loc_bwxt_NumberOfFormerNuclearFuelProcessingFacilities_790db632-80b2-4262-aa6f-5b6399a6c687" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_FinancialAssuranceToPayExpectedCostOfDecommissioning_d5b6c623-2601-4dae-837b-6c0a4ce3d911" xlink:href="bwxt-20251231.xsd#bwxt_FinancialAssuranceToPayExpectedCostOfDecommissioning"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ContingenciesAndCommitmentsLineItems_d543c7bb-378c-443f-a71f-756fdec6c562" xlink:to="loc_bwxt_FinancialAssuranceToPayExpectedCostOfDecommissioning_d5b6c623-2601-4dae-837b-6c0a4ce3d911" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_EnvironmentalRemediationExpenseStatementOfIncomeOrComprehensiveIncomeExtensibleEnumerationNotDisclosedFlag_92e7d530-f0b6-4fd4-a399-19146ffb1bb9" xlink:href="bwxt-20251231.xsd#bwxt_EnvironmentalRemediationExpenseStatementOfIncomeOrComprehensiveIncomeExtensibleEnumerationNotDisclosedFlag"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ContingenciesAndCommitmentsLineItems_d543c7bb-378c-443f-a71f-756fdec6c562" xlink:to="loc_bwxt_EnvironmentalRemediationExpenseStatementOfIncomeOrComprehensiveIncomeExtensibleEnumerationNotDisclosedFlag_92e7d530-f0b6-4fd4-a399-19146ffb1bb9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalRemediationExpense_5e52c0d8-22c3-4794-b7ac-8073a475f983" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EnvironmentalRemediationExpense"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ContingenciesAndCommitmentsLineItems_d543c7bb-378c-443f-a71f-756fdec6c562" xlink:to="loc_us-gaap_EnvironmentalRemediationExpense_5e52c0d8-22c3-4794-b7ac-8073a475f983" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalCostsRecognizedCapitalizedInPeriod_640e41db-1519-4203-afef-976b9f058a8c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EnvironmentalCostsRecognizedCapitalizedInPeriod"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ContingenciesAndCommitmentsLineItems_d543c7bb-378c-443f-a71f-756fdec6c562" xlink:to="loc_us-gaap_EnvironmentalCostsRecognizedCapitalizedInPeriod_640e41db-1519-4203-afef-976b9f058a8c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_EnvironmentalLossContingencyStatementOfFinancialPositionExtensibleEnumerationNotDisclosedFlag_8a486f5a-2d70-4cbc-af8f-7739123a5027" xlink:href="bwxt-20251231.xsd#bwxt_EnvironmentalLossContingencyStatementOfFinancialPositionExtensibleEnumerationNotDisclosedFlag"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ContingenciesAndCommitmentsLineItems_d543c7bb-378c-443f-a71f-756fdec6c562" xlink:to="loc_bwxt_EnvironmentalLossContingencyStatementOfFinancialPositionExtensibleEnumerationNotDisclosedFlag_8a486f5a-2d70-4cbc-af8f-7739123a5027" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingencies_7dedac2a-afb6-4be4-afe8-4181cbd26a26" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccrualForEnvironmentalLossContingencies"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ContingenciesAndCommitmentsLineItems_d543c7bb-378c-443f-a71f-756fdec6c562" xlink:to="loc_us-gaap_AccrualForEnvironmentalLossContingencies_7dedac2a-afb6-4be4-afe8-4181cbd26a26" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedEnvironmentalLossContingenciesCurrent_3605bfd3-c813-48bb-b39b-01e01af79f96" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccruedEnvironmentalLossContingenciesCurrent"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ContingenciesAndCommitmentsLineItems_d543c7bb-378c-443f-a71f-756fdec6c562" xlink:to="loc_us-gaap_AccruedEnvironmentalLossContingenciesCurrent_3605bfd3-c813-48bb-b39b-01e01af79f96" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnvironmentalLossContingencyCurrentStatementOfFinancialPositionExtensibleEnumeration_15a29a03-b69c-433d-8e9e-0462346467a0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EnvironmentalLossContingencyCurrentStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_bwxt_ContingenciesAndCommitmentsLineItems_d543c7bb-378c-443f-a71f-756fdec6c562" xlink:to="loc_us-gaap_EnvironmentalLossContingencyCurrentStatementOfFinancialPositionExtensibleEnumeration_15a29a03-b69c-433d-8e9e-0462346467a0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/FinancialInstrumentswithConcentrationsofCreditRiskDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#FinancialInstrumentswithConcentrationsofCreditRiskDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/FinancialInstrumentswithConcentrationsofCreditRiskDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RisksAndUncertaintiesAbstract_14bf01ef-9e51-4702-a187-976f2a48628a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RisksAndUncertaintiesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueConcentrationOfRiskTable_cc8ebedf-597a-4e82-a5ea-5f018f45019e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueConcentrationOfRiskTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RisksAndUncertaintiesAbstract_14bf01ef-9e51-4702-a187-976f2a48628a" xlink:to="loc_us-gaap_FairValueConcentrationOfRiskTable_cc8ebedf-597a-4e82-a5ea-5f018f45019e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_3bf25b47-4998-432c-acfe-94e694d16716" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskTable_cc8ebedf-597a-4e82-a5ea-5f018f45019e" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_3bf25b47-4998-432c-acfe-94e694d16716" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_bd1a4676-6326-4b5e-b61a-9a9905185bc4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_3bf25b47-4998-432c-acfe-94e694d16716" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_bd1a4676-6326-4b5e-b61a-9a9905185bc4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GovernmentContractsConcentrationRiskMember_e819625d-b3f9-40f9-b4eb-faa3ddbd485e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GovernmentContractsConcentrationRiskMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_bd1a4676-6326-4b5e-b61a-9a9905185bc4" xlink:to="loc_us-gaap_GovernmentContractsConcentrationRiskMember_e819625d-b3f9-40f9-b4eb-faa3ddbd485e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerConcentrationRiskMember_7b256f69-14eb-4b0c-b6fe-525e5cde3c2b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CustomerConcentrationRiskMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_bd1a4676-6326-4b5e-b61a-9a9905185bc4" xlink:to="loc_us-gaap_CustomerConcentrationRiskMember_7b256f69-14eb-4b0c-b6fe-525e5cde3c2b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_edcf0423-2bbe-4ea1-811d-f6232fc8df84" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskTable_cc8ebedf-597a-4e82-a5ea-5f018f45019e" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_edcf0423-2bbe-4ea1-811d-f6232fc8df84" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_ca3945ca-03e4-46f5-a2ae-c156f7287f2c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_edcf0423-2bbe-4ea1-811d-f6232fc8df84" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_ca3945ca-03e4-46f5-a2ae-c156f7287f2c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerMember_d48965ef-2e53-41df-89b3-0eaa62568096" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_ca3945ca-03e4-46f5-a2ae-c156f7287f2c" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerMember_d48965ef-2e53-41df-89b3-0eaa62568096" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableMember_0c852ae0-7833-42d3-896c-549ca57e81e4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivableMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_ca3945ca-03e4-46f5-a2ae-c156f7287f2c" xlink:to="loc_us-gaap_AccountsReceivableMember_0c852ae0-7833-42d3-896c-549ca57e81e4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_a9df9c4d-eeea-4125-a7d3-f6f8dec76a6b" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MajorCustomersAxis"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskTable_cc8ebedf-597a-4e82-a5ea-5f018f45019e" xlink:to="loc_srt_MajorCustomersAxis_a9df9c4d-eeea-4125-a7d3-f6f8dec76a6b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_178c29bf-4828-40e3-9f8a-dc00ea1d5f1a" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_MajorCustomersAxis_a9df9c4d-eeea-4125-a7d3-f6f8dec76a6b" xlink:to="loc_srt_NameOfMajorCustomerDomain_178c29bf-4828-40e3-9f8a-dc00ea1d5f1a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_USGovernmentMember_59d1b574-a492-4942-bc80-a829be04b8db" xlink:href="bwxt-20251231.xsd#bwxt_USGovernmentMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_NameOfMajorCustomerDomain_178c29bf-4828-40e3-9f8a-dc00ea1d5f1a" xlink:to="loc_bwxt_USGovernmentMember_59d1b574-a492-4942-bc80-a829be04b8db" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_FourUtilityCustomersMember_019c34ef-14e5-76d8-9cc1-97529b558338" xlink:href="bwxt-20251231.xsd#bwxt_FourUtilityCustomersMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_NameOfMajorCustomerDomain_178c29bf-4828-40e3-9f8a-dc00ea1d5f1a" xlink:to="loc_bwxt_FourUtilityCustomersMember_019c34ef-14e5-76d8-9cc1-97529b558338" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueConcentrationOfRiskFinancialStatementCaptionsLineItems_f39f1ad3-c74e-47fb-8a40-f9e044186292" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueConcentrationOfRiskFinancialStatementCaptionsLineItems"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskTable_cc8ebedf-597a-4e82-a5ea-5f018f45019e" xlink:to="loc_us-gaap_FairValueConcentrationOfRiskFinancialStatementCaptionsLineItems_f39f1ad3-c74e-47fb-8a40-f9e044186292" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_35794974-aa51-46a3-87f9-dabe25aec1ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskFinancialStatementCaptionsLineItems_f39f1ad3-c74e-47fb-8a40-f9e044186292" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_35794974-aa51-46a3-87f9-dabe25aec1ce" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_80292f70-2ea1-4b73-b76b-cb78762681b8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueConcentrationOfRiskFinancialStatementCaptionsLineItems_f39f1ad3-c74e-47fb-8a40-f9e044186292" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_80292f70-2ea1-4b73-b76b-cb78762681b8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/InvestmentsSummaryofInvestmentsDetail" xlink:type="simple" xlink:href="bwxt-20251231.xsd#InvestmentsSummaryofInvestmentsDetail"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/InvestmentsSummaryofInvestmentsDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_b4f8ee1e-817b-4de4-b720-4b8ed21036e3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_862f12a9-711c-4757-a487-893188898a17" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesAvailableForSaleTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_b4f8ee1e-817b-4de4-b720-4b8ed21036e3" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_862f12a9-711c-4757-a487-893188898a17" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_dc8fe3e0-c7e3-40db-a357-2cfaf3c2c983" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_862f12a9-711c-4757-a487-893188898a17" xlink:to="loc_us-gaap_FinancialInstrumentAxis_dc8fe3e0-c7e3-40db-a357-2cfaf3c2c983" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6f7f2f37-59b5-43ec-8969-1e04e60ce255" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FinancialInstrumentAxis_dc8fe3e0-c7e3-40db-a357-2cfaf3c2c983" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6f7f2f37-59b5-43ec-8969-1e04e60ce255" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MutualFundMember_ab122448-61ae-40e4-a004-d0fc7db2f979" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MutualFundMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6f7f2f37-59b5-43ec-8969-1e04e60ce255" xlink:to="loc_us-gaap_MutualFundMember_ab122448-61ae-40e4-a004-d0fc7db2f979" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateBondSecuritiesMember_c5771b2f-3313-4e43-b9af-db6dd2393e95" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateBondSecuritiesMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6f7f2f37-59b5-43ec-8969-1e04e60ce255" xlink:to="loc_us-gaap_CorporateBondSecuritiesMember_c5771b2f-3313-4e43-b9af-db6dd2393e95" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_11b7c4f9-b99c-4d24-9418-91ee360c7663" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtSecuritiesAvailableForSaleTable_862f12a9-711c-4757-a487-893188898a17" xlink:to="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_11b7c4f9-b99c-4d24-9418-91ee360c7663" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiGainLossAbstract_53b9504d-2994-4c7b-9db4-7df2bdda1a36" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquitySecuritiesFvNiGainLossAbstract"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_11b7c4f9-b99c-4d24-9418-91ee360c7663" xlink:to="loc_us-gaap_EquitySecuritiesFvNiGainLossAbstract_53b9504d-2994-4c7b-9db4-7df2bdda1a36" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiCost_c91ca27b-6b24-4c31-822d-264b7fe0b34e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquitySecuritiesFvNiCost"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquitySecuritiesFvNiGainLossAbstract_53b9504d-2994-4c7b-9db4-7df2bdda1a36" xlink:to="loc_us-gaap_EquitySecuritiesFvNiCost_c91ca27b-6b24-4c31-822d-264b7fe0b34e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGain_7e093c98-7735-4aca-9caf-72e9a5b5c92d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquitySecuritiesFvNiUnrealizedGain"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquitySecuritiesFvNiGainLossAbstract_53b9504d-2994-4c7b-9db4-7df2bdda1a36" xlink:to="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGain_7e093c98-7735-4aca-9caf-72e9a5b5c92d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiUnrealizedLoss_e2108fec-14f1-4546-8011-21f0af7c1a39" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquitySecuritiesFvNiUnrealizedLoss"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquitySecuritiesFvNiGainLossAbstract_53b9504d-2994-4c7b-9db4-7df2bdda1a36" xlink:to="loc_us-gaap_EquitySecuritiesFvNiUnrealizedLoss_e2108fec-14f1-4546-8011-21f0af7c1a39" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_5c596a42-093f-4533-bd03-e12adb75b746" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquitySecuritiesFvNi"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquitySecuritiesFvNiGainLossAbstract_53b9504d-2994-4c7b-9db4-7df2bdda1a36" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_5c596a42-093f-4533-bd03-e12adb75b746" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAbstract_451d9f53-1989-483a-bed6-67d5cd818d1b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleSecuritiesAbstract"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_11b7c4f9-b99c-4d24-9418-91ee360c7663" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAbstract_451d9f53-1989-483a-bed6-67d5cd818d1b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss_bf8b1a34-28c7-4256-bf4c-25c49a36f19a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_451d9f53-1989-483a-bed6-67d5cd818d1b" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss_bf8b1a34-28c7-4256-bf4c-25c49a36f19a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_7d690ea2-8b56-44e1-a899-f3dcb9e8a94f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_451d9f53-1989-483a-bed6-67d5cd818d1b" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_7d690ea2-8b56-44e1-a899-f3dcb9e8a94f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_32412dfd-d590-4f12-97c1-d3489d586e0b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_451d9f53-1989-483a-bed6-67d5cd818d1b" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_32412dfd-d590-4f12-97c1-d3489d586e0b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_f9e52d57-d0c9-4e0d-8de0-f2ba1b002ebe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_451d9f53-1989-483a-bed6-67d5cd818d1b" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_f9e52d57-d0c9-4e0d-8de0-f2ba1b002ebe" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesTradingAndEquitySecuritiesFvNiAbstract_162aaadf-b2cc-4788-8620-7650a605a8e6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesTradingAndEquitySecuritiesFvNiAbstract"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_11b7c4f9-b99c-4d24-9418-91ee360c7663" xlink:to="loc_us-gaap_DebtSecuritiesTradingAndEquitySecuritiesFvNiAbstract_162aaadf-b2cc-4788-8620-7650a605a8e6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAmortizedCost_4cdbe5d7-7f9f-4c14-82ba-4f2043d77570" xlink:href="bwxt-20251231.xsd#bwxt_DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAmortizedCost"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtSecuritiesTradingAndEquitySecuritiesFvNiAbstract_162aaadf-b2cc-4788-8620-7650a605a8e6" xlink:to="loc_bwxt_DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAmortizedCost_4cdbe5d7-7f9f-4c14-82ba-4f2043d77570" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAccumulatedGrossUnrealizedGainBeforeTax_60fb27f8-0a0e-45b4-8f4d-6fd69b360787" xlink:href="bwxt-20251231.xsd#bwxt_DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtSecuritiesTradingAndEquitySecuritiesFvNiAbstract_162aaadf-b2cc-4788-8620-7650a605a8e6" xlink:to="loc_bwxt_DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNIAccumulatedGrossUnrealizedGainBeforeTax_60fb27f8-0a0e-45b4-8f4d-6fd69b360787" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DebtSecuritiesTradingAndEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax_7647ac46-4cc6-464c-a1f3-6fddedc09abe" xlink:href="bwxt-20251231.xsd#bwxt_DebtSecuritiesTradingAndEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtSecuritiesTradingAndEquitySecuritiesFvNiAbstract_162aaadf-b2cc-4788-8620-7650a605a8e6" xlink:to="loc_bwxt_DebtSecuritiesTradingAndEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax_7647ac46-4cc6-464c-a1f3-6fddedc09abe" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNI_b541bb13-a65d-48e9-b597-49c1ed1a4abe" xlink:href="bwxt-20251231.xsd#bwxt_DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNI"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtSecuritiesTradingAndEquitySecuritiesFvNiAbstract_162aaadf-b2cc-4788-8620-7650a605a8e6" xlink:to="loc_bwxt_DebtSecuritiesAvailableForSaleAndEquitySecuritiesFVNI_b541bb13-a65d-48e9-b597-49c1ed1a4abe" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/FairValueMeasurementsSummaryofInvestmentsandAvailableforSaleSecuritiesMeasuredatFairValueDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#FairValueMeasurementsSummaryofInvestmentsandAvailableforSaleSecuritiesMeasuredatFairValueDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/FairValueMeasurementsSummaryofInvestmentsandAvailableforSaleSecuritiesMeasuredatFairValueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract_952328f4-3ff6-4b03-9a8f-2091b16da799" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueDisclosuresAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_1801622e-7b26-4a8f-83bd-deb77b0ec6b6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueDisclosuresAbstract_952328f4-3ff6-4b03-9a8f-2091b16da799" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_1801622e-7b26-4a8f-83bd-deb77b0ec6b6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_ff21af69-ac38-4d25-9385-4a892e65cfb3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_1801622e-7b26-4a8f-83bd-deb77b0ec6b6" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_ff21af69-ac38-4d25-9385-4a892e65cfb3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_21b2dcda-4eb4-434a-bb36-94d42313d057" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_ff21af69-ac38-4d25-9385-4a892e65cfb3" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_21b2dcda-4eb4-434a-bb36-94d42313d057" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_28f77c69-b951-4af7-930b-c113af036dfa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_21b2dcda-4eb4-434a-bb36-94d42313d057" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_28f77c69-b951-4af7-930b-c113af036dfa" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_92dbb2e7-6527-4100-9a8a-312845662724" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_21b2dcda-4eb4-434a-bb36-94d42313d057" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_92dbb2e7-6527-4100-9a8a-312845662724" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_f04b0e14-5e4e-46bc-a778-2d14b59043e6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_21b2dcda-4eb4-434a-bb36-94d42313d057" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_f04b0e14-5e4e-46bc-a778-2d14b59043e6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_e3c923d6-0774-438f-aa25-c481ef485d37" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_1801622e-7b26-4a8f-83bd-deb77b0ec6b6" xlink:to="loc_us-gaap_FinancialInstrumentAxis_e3c923d6-0774-438f-aa25-c481ef485d37" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b2258f12-c0ed-46f8-921b-72ca1618a5fe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FinancialInstrumentAxis_e3c923d6-0774-438f-aa25-c481ef485d37" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b2258f12-c0ed-46f8-921b-72ca1618a5fe" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MutualFundMember_08426868-2223-4480-9c73-e599fa843965" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MutualFundMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b2258f12-c0ed-46f8-921b-72ca1618a5fe" xlink:to="loc_us-gaap_MutualFundMember_08426868-2223-4480-9c73-e599fa843965" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateBondSecuritiesMember_5506c1cf-4f0a-4ea4-944b-9258ee24433e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateBondSecuritiesMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_b2258f12-c0ed-46f8-921b-72ca1618a5fe" xlink:to="loc_us-gaap_CorporateBondSecuritiesMember_5506c1cf-4f0a-4ea4-944b-9258ee24433e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_ee3315c9-5ab7-403c-a17e-77998f0587be" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_1801622e-7b26-4a8f-83bd-deb77b0ec6b6" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_ee3315c9-5ab7-403c-a17e-77998f0587be" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_dcb450ca-a38b-401b-a40a-45930e3bd080" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquitySecuritiesFvNi"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_ee3315c9-5ab7-403c-a17e-77998f0587be" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_dcb450ca-a38b-401b-a40a-45930e3bd080" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_b8a5f04b-6f64-4bc3-9082-9660e566461a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_ee3315c9-5ab7-403c-a17e-77998f0587be" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_b8a5f04b-6f64-4bc3-9082-9660e566461a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_AvailableForSaleDebtSecuritiesAndEquitySecuritiesFVNI_ebeceb4a-cdca-4d8a-9ccc-fe7dbdbdcb72" xlink:href="bwxt-20251231.xsd#bwxt_AvailableForSaleDebtSecuritiesAndEquitySecuritiesFVNI"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_ee3315c9-5ab7-403c-a17e-77998f0587be" xlink:to="loc_bwxt_AvailableForSaleDebtSecuritiesAndEquitySecuritiesFVNI_ebeceb4a-cdca-4d8a-9ccc-fe7dbdbdcb72" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/FairValueMeasurementsAdditionalInformationDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#FairValueMeasurementsAdditionalInformationDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/FairValueMeasurementsAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract_0759dbfa-98d0-4b92-908e-54f77bfda449" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueDisclosuresAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_7e71fee2-d322-4121-8c26-9188aaf40db5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueDisclosuresAbstract_0759dbfa-98d0-4b92-908e-54f77bfda449" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_7e71fee2-d322-4121-8c26-9188aaf40db5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_3647d65a-d23e-46cd-b6bc-1c5f3d9d6f3f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_7e71fee2-d322-4121-8c26-9188aaf40db5" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_3647d65a-d23e-46cd-b6bc-1c5f3d9d6f3f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_91d1274c-517c-43b3-9ba7-49cbfbaab549" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_3647d65a-d23e-46cd-b6bc-1c5f3d9d6f3f" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_91d1274c-517c-43b3-9ba7-49cbfbaab549" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_f12b787b-7b8b-4935-82d1-3f665f973c3a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_91d1274c-517c-43b3-9ba7-49cbfbaab549" xlink:to="loc_us-gaap_ForeignExchangeContractMember_f12b787b-7b8b-4935-82d1-3f665f973c3a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_a06f8fc4-6fc0-41e3-a701-66be272a6e16" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_7e71fee2-d322-4121-8c26-9188aaf40db5" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_a06f8fc4-6fc0-41e3-a701-66be272a6e16" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_16246190-47cf-487d-95d0-7e91653d9710" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_a06f8fc4-6fc0-41e3-a701-66be272a6e16" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_16246190-47cf-487d-95d0-7e91653d9710" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_39d7169d-0721-47b9-bdde-7a0f16e0233d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SeniorNotesMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_16246190-47cf-487d-95d0-7e91653d9710" xlink:to="loc_us-gaap_SeniorNotesMember_39d7169d-0721-47b9-bdde-7a0f16e0233d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtMember_019c3500-a348-7cab-89e2-25573144acb1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConvertibleDebtMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_16246190-47cf-487d-95d0-7e91653d9710" xlink:to="loc_us-gaap_ConvertibleDebtMember_019c3500-a348-7cab-89e2-25573144acb1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_36963c3c-3197-4eee-bc7e-7612dad8d635" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_7e71fee2-d322-4121-8c26-9188aaf40db5" xlink:to="loc_us-gaap_DebtInstrumentAxis_36963c3c-3197-4eee-bc7e-7612dad8d635" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_896fdbdd-4d86-4d7b-80e8-e0fb9b0ebc3c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentAxis_36963c3c-3197-4eee-bc7e-7612dad8d635" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_896fdbdd-4d86-4d7b-80e8-e0fb9b0ebc3c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_SeniorNotesDue2028Member_6f5bd90b-f508-4a8e-a2c6-7f65a5de66bf" xlink:href="bwxt-20251231.xsd#bwxt_SeniorNotesDue2028Member"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_896fdbdd-4d86-4d7b-80e8-e0fb9b0ebc3c" xlink:to="loc_bwxt_SeniorNotesDue2028Member_6f5bd90b-f508-4a8e-a2c6-7f65a5de66bf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_SeniorNotesDue2029Member_cf1f78e3-e9e5-4c60-baa2-efeed4433db1" xlink:href="bwxt-20251231.xsd#bwxt_SeniorNotesDue2029Member"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_896fdbdd-4d86-4d7b-80e8-e0fb9b0ebc3c" xlink:to="loc_bwxt_SeniorNotesDue2029Member_cf1f78e3-e9e5-4c60-baa2-efeed4433db1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_A2030NotesMember_019c3500-a348-7a4c-a083-43c51321b18d" xlink:href="bwxt-20251231.xsd#bwxt_A2030NotesMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_896fdbdd-4d86-4d7b-80e8-e0fb9b0ebc3c" xlink:to="loc_bwxt_A2030NotesMember_019c3500-a348-7a4c-a083-43c51321b18d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_8021d605-bc30-45bc-a236-b811980dbe43" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_7e71fee2-d322-4121-8c26-9188aaf40db5" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_8021d605-bc30-45bc-a236-b811980dbe43" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_7adcae7a-10c3-47ea-9d5f-0a5cdd3c0cf8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_8021d605-bc30-45bc-a236-b811980dbe43" xlink:to="loc_us-gaap_ReceivableTypeDomain_7adcae7a-10c3-47ea-9d5f-0a5cdd3c0cf8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableMember_373194b6-945c-4a3e-b2b6-147e3712cba6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NotesReceivableMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReceivableTypeDomain_7adcae7a-10c3-47ea-9d5f-0a5cdd3c0cf8" xlink:to="loc_us-gaap_NotesReceivableMember_373194b6-945c-4a3e-b2b6-147e3712cba6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_a45f7e0d-98ec-44d7-993b-8250e74227a6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_7e71fee2-d322-4121-8c26-9188aaf40db5" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_a45f7e0d-98ec-44d7-993b-8250e74227a6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeNet_8b45f5a4-1808-4f54-8b3a-002bc5c460bd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeFairValueOfDerivativeNet"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_a45f7e0d-98ec-44d7-993b-8250e74227a6" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeNet_8b45f5a4-1808-4f54-8b3a-002bc5c460bd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_b6d3a03b-509b-4c93-a805-57ca2550bfe3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtFairValue"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_a45f7e0d-98ec-44d7-993b-8250e74227a6" xlink:to="loc_us-gaap_LongTermDebtFairValue_b6d3a03b-509b-4c93-a805-57ca2550bfe3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesAndLoansReceivableNetNoncurrent_e25147db-f9fa-44cd-8ff2-4bd60ca17c3d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NotesAndLoansReceivableNetNoncurrent"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_a45f7e0d-98ec-44d7-993b-8250e74227a6" xlink:to="loc_us-gaap_NotesAndLoansReceivableNetNoncurrent_e25147db-f9fa-44cd-8ff2-4bd60ca17c3d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/SegmentReportingAdditionalInformationDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#SegmentReportingAdditionalInformationDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/SegmentReportingAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingAbstract_54dcbba4-8f81-4c98-bbb5-978344a1c8aa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_fc3dd58b-6f4d-4e73-b35d-e7bed9b20246" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_54dcbba4-8f81-4c98-bbb5-978344a1c8aa" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_fc3dd58b-6f4d-4e73-b35d-e7bed9b20246" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_3138a7d9-ef24-49ad-9815-22e4175af79a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_fc3dd58b-6f4d-4e73-b35d-e7bed9b20246" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_3138a7d9-ef24-49ad-9815-22e4175af79a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_0991f5c2-5c70-4e5e-a1d6-91c40b37ca1f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_3138a7d9-ef24-49ad-9815-22e4175af79a" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_0991f5c2-5c70-4e5e-a1d6-91c40b37ca1f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerConcentrationRiskMember_737cec2e-e675-4ff5-ac48-7b61efb0541d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CustomerConcentrationRiskMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_0991f5c2-5c70-4e5e-a1d6-91c40b37ca1f" xlink:to="loc_us-gaap_CustomerConcentrationRiskMember_737cec2e-e675-4ff5-ac48-7b61efb0541d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_037611e3-723b-44ab-8454-a0ed107b0181" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_fc3dd58b-6f4d-4e73-b35d-e7bed9b20246" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_037611e3-723b-44ab-8454-a0ed107b0181" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_ad2f813d-34e5-469e-ab32-2ff43f4696ab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_037611e3-723b-44ab-8454-a0ed107b0181" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_ad2f813d-34e5-469e-ab32-2ff43f4696ab" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesRevenueNetMember_d672851c-aae8-4dc0-8abb-8688b40d541d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SalesRevenueNetMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_ad2f813d-34e5-469e-ab32-2ff43f4696ab" xlink:to="loc_us-gaap_SalesRevenueNetMember_d672851c-aae8-4dc0-8abb-8688b40d541d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_bf2168ff-080a-4abf-89b3-8c6f9636af9b" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MajorCustomersAxis"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_fc3dd58b-6f4d-4e73-b35d-e7bed9b20246" xlink:to="loc_srt_MajorCustomersAxis_bf2168ff-080a-4abf-89b3-8c6f9636af9b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_d1c90b83-364a-4d0b-a6a2-66ae10274264" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_MajorCustomersAxis_bf2168ff-080a-4abf-89b3-8c6f9636af9b" xlink:to="loc_srt_NameOfMajorCustomerDomain_d1c90b83-364a-4d0b-a6a2-66ae10274264" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_USGovernmentMember_5e068a37-199b-4f56-8bc8-62e465a6a385" xlink:href="bwxt-20251231.xsd#bwxt_USGovernmentMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_NameOfMajorCustomerDomain_d1c90b83-364a-4d0b-a6a2-66ae10274264" xlink:to="loc_bwxt_USGovernmentMember_5e068a37-199b-4f56-8bc8-62e465a6a385" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_TwoUtilityCustomersMember_fd7a9544-9c87-4578-9b39-e9b43306c7b1" xlink:href="bwxt-20251231.xsd#bwxt_TwoUtilityCustomersMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_NameOfMajorCustomerDomain_d1c90b83-364a-4d0b-a6a2-66ae10274264" xlink:to="loc_bwxt_TwoUtilityCustomersMember_fd7a9544-9c87-4578-9b39-e9b43306c7b1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_f196a8e3-7701-48d6-ad08-46267dbe84e7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_fc3dd58b-6f4d-4e73-b35d-e7bed9b20246" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_f196a8e3-7701-48d6-ad08-46267dbe84e7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_9378bb60-df16-4d73-8040-620f65711df9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_f196a8e3-7701-48d6-ad08-46267dbe84e7" xlink:to="loc_us-gaap_SegmentDomain_9378bb60-df16-4d73-8040-620f65711df9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_GovernmentOperationsSegmentMember_06210a54-7ed1-4e52-8926-ea7eae5ad22e" xlink:href="bwxt-20251231.xsd#bwxt_GovernmentOperationsSegmentMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_9378bb60-df16-4d73-8040-620f65711df9" xlink:to="loc_bwxt_GovernmentOperationsSegmentMember_06210a54-7ed1-4e52-8926-ea7eae5ad22e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CommercialOperationsSegmentMember_0a9a2f59-cae3-47cf-b720-804dbe9251e8" xlink:href="bwxt-20251231.xsd#bwxt_CommercialOperationsSegmentMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_9378bb60-df16-4d73-8040-620f65711df9" xlink:to="loc_bwxt_CommercialOperationsSegmentMember_0a9a2f59-cae3-47cf-b720-804dbe9251e8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_9d2b8842-f151-4243-9017-b807d704a803" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_fc3dd58b-6f4d-4e73-b35d-e7bed9b20246" xlink:to="loc_us-gaap_SegmentReportingInformationLineItems_9d2b8842-f151-4243-9017-b807d704a803" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_ed1dea56-69fa-492c-8909-c297dd79dc09" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NumberOfReportableSegments"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9d2b8842-f151-4243-9017-b807d704a803" xlink:to="loc_us-gaap_NumberOfReportableSegments_ed1dea56-69fa-492c-8909-c297dd79dc09" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_98320f93-1d2b-428b-abac-f348a3008ccb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_9d2b8842-f151-4243-9017-b807d704a803" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_98320f93-1d2b-428b-abac-f348a3008ccb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/SegmentReportingScheduleofOperationsbySegmentsDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#SegmentReportingScheduleofOperationsbySegmentsDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/SegmentReportingScheduleofOperationsbySegmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingAbstract_c6f7eacd-bbd9-4ff5-9d87-bf565ca75950" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReconciliationOfOtherSignificantReconcilingItemsFromSegmentsToConsolidatedTable_c44303b9-1d98-4e6c-b5a0-e22e0efc5791" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReconciliationOfOtherSignificantReconcilingItemsFromSegmentsToConsolidatedTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_c6f7eacd-bbd9-4ff5-9d87-bf565ca75950" xlink:to="loc_us-gaap_ReconciliationOfOtherSignificantReconcilingItemsFromSegmentsToConsolidatedTable_c44303b9-1d98-4e6c-b5a0-e22e0efc5791" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_7f2fb56b-81b2-4971-9bca-f87d3fd66aaa" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfOtherSignificantReconcilingItemsFromSegmentsToConsolidatedTable_c44303b9-1d98-4e6c-b5a0-e22e0efc5791" xlink:to="loc_srt_ConsolidationItemsAxis_7f2fb56b-81b2-4971-9bca-f87d3fd66aaa" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_4b5a4f98-0760-48fb-a4ad-6636c13dba12" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsAxis_7f2fb56b-81b2-4971-9bca-f87d3fd66aaa" xlink:to="loc_srt_ConsolidationItemsDomain_4b5a4f98-0760-48fb-a4ad-6636c13dba12" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_169f1abc-5ada-4b0a-83d9-ffa895995bd5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_4b5a4f98-0760-48fb-a4ad-6636c13dba12" xlink:to="loc_us-gaap_OperatingSegmentsMember_169f1abc-5ada-4b0a-83d9-ffa895995bd5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntersegmentEliminationMember_58c84003-c775-4167-846a-48ad85945c3c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntersegmentEliminationMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_4b5a4f98-0760-48fb-a4ad-6636c13dba12" xlink:to="loc_us-gaap_IntersegmentEliminationMember_58c84003-c775-4167-846a-48ad85945c3c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_ba6de1a5-3e2d-4549-aa9e-9b68bac0f997" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_4b5a4f98-0760-48fb-a4ad-6636c13dba12" xlink:to="loc_us-gaap_CorporateNonSegmentMember_ba6de1a5-3e2d-4549-aa9e-9b68bac0f997" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_9241cd36-8d56-4a3c-9992-ec1337aecce2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfOtherSignificantReconcilingItemsFromSegmentsToConsolidatedTable_c44303b9-1d98-4e6c-b5a0-e22e0efc5791" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_9241cd36-8d56-4a3c-9992-ec1337aecce2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_9244a292-a2c1-417a-adeb-fa358b001a66" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_9241cd36-8d56-4a3c-9992-ec1337aecce2" xlink:to="loc_us-gaap_SegmentDomain_9244a292-a2c1-417a-adeb-fa358b001a66" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_GovernmentOperationsSegmentMember_8acea440-f2a2-4ba4-b04a-12d217889efc" xlink:href="bwxt-20251231.xsd#bwxt_GovernmentOperationsSegmentMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_9244a292-a2c1-417a-adeb-fa358b001a66" xlink:to="loc_bwxt_GovernmentOperationsSegmentMember_8acea440-f2a2-4ba4-b04a-12d217889efc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CommercialOperationsSegmentMember_ef503ae5-88b5-46d4-9899-55f875eef250" xlink:href="bwxt-20251231.xsd#bwxt_CommercialOperationsSegmentMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_9244a292-a2c1-417a-adeb-fa358b001a66" xlink:to="loc_bwxt_CommercialOperationsSegmentMember_ef503ae5-88b5-46d4-9899-55f875eef250" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_2bc69624-dbd8-4a61-882a-732c5826a876" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReconciliationOfOtherSignificantReconcilingItemsFromSegmentsToConsolidatedTable_c44303b9-1d98-4e6c-b5a0-e22e0efc5791" xlink:to="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_2bc69624-dbd8-4a61-882a-732c5826a876" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_6038e416-75f3-4345-81f0-b25ba907c7aa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_2bc69624-dbd8-4a61-882a-732c5826a876" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_6038e416-75f3-4345-81f0-b25ba907c7aa" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_b2fecf3d-a854-44fd-a8e2-a173a7dc6171" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_2bc69624-dbd8-4a61-882a-732c5826a876" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_b2fecf3d-a854-44fd-a8e2-a173a7dc6171" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets_dd937b8b-571f-4e17-a99a-d19876dfffcb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnDispositionOfAssets"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_2bc69624-dbd8-4a61-882a-732c5826a876" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets_dd937b8b-571f-4e17-a99a-d19876dfffcb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingOtherItemAmount_069ea85e-fc08-4e1b-aace-e99dd5b9c3f5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingOtherItemAmount"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_2bc69624-dbd8-4a61-882a-732c5826a876" xlink:to="loc_us-gaap_SegmentReportingOtherItemAmount_069ea85e-fc08-4e1b-aace-e99dd5b9c3f5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CostsAndExpensesAdjusted_4825e48e-cb6f-464d-80b6-17500bed42b7" xlink:href="bwxt-20251231.xsd#bwxt_CostsAndExpensesAdjusted"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_2bc69624-dbd8-4a61-882a-732c5826a876" xlink:to="loc_bwxt_CostsAndExpensesAdjusted_4825e48e-cb6f-464d-80b6-17500bed42b7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_OperatingIncomeLossAdjusted_22b62633-2101-4bd5-9ccf-e812fd709704" xlink:href="bwxt-20251231.xsd#bwxt_OperatingIncomeLossAdjusted"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_2bc69624-dbd8-4a61-882a-732c5826a876" xlink:to="loc_bwxt_OperatingIncomeLossAdjusted_22b62633-2101-4bd5-9ccf-e812fd709704" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_082985fc-d99b-4ded-ae2e-29d354eb4222" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_2bc69624-dbd8-4a61-882a-732c5826a876" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_082985fc-d99b-4ded-ae2e-29d354eb4222" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_4025aecd-304f-4628-ac35-1938a5a857f2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_2bc69624-dbd8-4a61-882a-732c5826a876" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_4025aecd-304f-4628-ac35-1938a5a857f2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_24eef684-b52f-4f02-a8cf-c88fb87b4552" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_2bc69624-dbd8-4a61-882a-732c5826a876" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_24eef684-b52f-4f02-a8cf-c88fb87b4552" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets_73e3e846-45c7-4ea3-961d-7c8153588edf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireProductiveAssets"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_2bc69624-dbd8-4a61-882a-732c5826a876" xlink:to="loc_us-gaap_PaymentsToAcquireProductiveAssets_73e3e846-45c7-4ea3-961d-7c8153588edf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperation_77511baa-b26f-4d1b-ac51-c413e4616c2d" xlink:href="bwxt-20251231.xsd#bwxt_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperation"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_2bc69624-dbd8-4a61-882a-732c5826a876" xlink:to="loc_bwxt_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperation_77511baa-b26f-4d1b-ac51-c413e4616c2d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_7a346ceb-7619-403f-972b-3ca922497c2c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnDispositionOfAssets1"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingOtherSignificantReconcilingItemLineItems_2bc69624-dbd8-4a61-882a-732c5826a876" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets1_7a346ceb-7619-403f-972b-3ca922497c2c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/SegmentReportingScheduleofRevenueInformationbyProductsandServiceLinesDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#SegmentReportingScheduleofRevenueInformationbyProductsandServiceLinesDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/SegmentReportingScheduleofRevenueInformationbyProductsandServiceLinesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingAbstract_5fb2b040-aefb-4c6b-8da0-e20d65c1cc81" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_e40ff085-ed05-4a2b-bbdf-a54293cd318a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_5fb2b040-aefb-4c6b-8da0-e20d65c1cc81" xlink:to="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_e40ff085-ed05-4a2b-bbdf-a54293cd318a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_be62ecd8-1b15-4507-9f82-8784300762df" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_e40ff085-ed05-4a2b-bbdf-a54293cd318a" xlink:to="loc_srt_ConsolidationItemsAxis_be62ecd8-1b15-4507-9f82-8784300762df" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_b3f3ea1d-c36e-49ac-b91b-0f38f118f666" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsAxis_be62ecd8-1b15-4507-9f82-8784300762df" xlink:to="loc_srt_ConsolidationItemsDomain_b3f3ea1d-c36e-49ac-b91b-0f38f118f666" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_06c45ddd-41a4-4beb-830a-b793339193b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_b3f3ea1d-c36e-49ac-b91b-0f38f118f666" xlink:to="loc_us-gaap_OperatingSegmentsMember_06c45ddd-41a4-4beb-830a-b793339193b7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntersegmentEliminationMember_83613675-7e12-4779-bcbe-45e456456180" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntersegmentEliminationMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_b3f3ea1d-c36e-49ac-b91b-0f38f118f666" xlink:to="loc_us-gaap_IntersegmentEliminationMember_83613675-7e12-4779-bcbe-45e456456180" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_7f90343d-ff7e-4093-ab72-3bc462ead5d5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_e40ff085-ed05-4a2b-bbdf-a54293cd318a" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_7f90343d-ff7e-4093-ab72-3bc462ead5d5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_21241483-1523-4606-98cf-07d732a3ca83" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_7f90343d-ff7e-4093-ab72-3bc462ead5d5" xlink:to="loc_us-gaap_SegmentDomain_21241483-1523-4606-98cf-07d732a3ca83" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_GovernmentOperationsSegmentMember_79f11fe2-fbc0-4f07-8d9f-97e7a38a3043" xlink:href="bwxt-20251231.xsd#bwxt_GovernmentOperationsSegmentMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_21241483-1523-4606-98cf-07d732a3ca83" xlink:to="loc_bwxt_GovernmentOperationsSegmentMember_79f11fe2-fbc0-4f07-8d9f-97e7a38a3043" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CommercialOperationsSegmentMember_def4e27c-bdc8-4600-ad33-13c1e3805406" xlink:href="bwxt-20251231.xsd#bwxt_CommercialOperationsSegmentMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_21241483-1523-4606-98cf-07d732a3ca83" xlink:to="loc_bwxt_CommercialOperationsSegmentMember_def4e27c-bdc8-4600-ad33-13c1e3805406" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_0dd9f965-878a-427c-9489-a0d5f828a944" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductOrServiceAxis"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_e40ff085-ed05-4a2b-bbdf-a54293cd318a" xlink:to="loc_srt_ProductOrServiceAxis_0dd9f965-878a-427c-9489-a0d5f828a944" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_b25de01c-4560-4f1b-9776-412f962ad3ce" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ProductOrServiceAxis_0dd9f965-878a-427c-9489-a0d5f828a944" xlink:to="loc_srt_ProductsAndServicesDomain_b25de01c-4560-4f1b-9776-412f962ad3ce" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_NuclearComponentProgramMember_6e8d0476-bd09-4e2b-9228-db144d755b53" xlink:href="bwxt-20251231.xsd#bwxt_NuclearComponentProgramMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ProductsAndServicesDomain_b25de01c-4560-4f1b-9776-412f962ad3ce" xlink:to="loc_bwxt_NuclearComponentProgramMember_6e8d0476-bd09-4e2b-9228-db144d755b53" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_UraniumAndNuclearServicesMember_93b783a6-1563-4c5c-bbeb-14930760a937" xlink:href="bwxt-20251231.xsd#bwxt_UraniumAndNuclearServicesMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ProductsAndServicesDomain_b25de01c-4560-4f1b-9776-412f962ad3ce" xlink:to="loc_bwxt_UraniumAndNuclearServicesMember_93b783a6-1563-4c5c-bbeb-14930760a937" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_CommercialOperationsMember_13954113-a050-4625-9d90-81cd4f20adc8" xlink:href="bwxt-20251231.xsd#bwxt_CommercialOperationsMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ProductsAndServicesDomain_b25de01c-4560-4f1b-9776-412f962ad3ce" xlink:to="loc_bwxt_CommercialOperationsMember_13954113-a050-4625-9d90-81cd4f20adc8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_NuclearManufacturingMember_07911488-8a11-4256-b10c-99b6ca9ba7e2" xlink:href="bwxt-20251231.xsd#bwxt_NuclearManufacturingMember"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ProductsAndServicesDomain_b25de01c-4560-4f1b-9776-412f962ad3ce" xlink:to="loc_bwxt_NuclearManufacturingMember_07911488-8a11-4256-b10c-99b6ca9ba7e2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_NuclearServicesandEngineeringMember_c816021e-e950-452e-aafd-09c27ecdc7b1" xlink:href="bwxt-20251231.xsd#bwxt_NuclearServicesandEngineeringMember"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ProductsAndServicesDomain_b25de01c-4560-4f1b-9776-412f962ad3ce" xlink:to="loc_bwxt_NuclearServicesandEngineeringMember_c816021e-e950-452e-aafd-09c27ecdc7b1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_4cc8b86d-e2eb-4caa-b77d-cdf84551313d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_e40ff085-ed05-4a2b-bbdf-a54293cd318a" xlink:to="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_4cc8b86d-e2eb-4caa-b77d-cdf84551313d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_0fd9b95e-4f87-4d70-bfd2-47dbed3fab21" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_4cc8b86d-e2eb-4caa-b77d-cdf84551313d" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_0fd9b95e-4f87-4d70-bfd2-47dbed3fab21" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/SegmentReportingScheduleofConsolidatedOperationsbyGeographicalAreaDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#SegmentReportingScheduleofConsolidatedOperationsbyGeographicalAreaDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/SegmentReportingScheduleofConsolidatedOperationsbyGeographicalAreaDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingAbstract_7f8b59e6-7747-4d08-a4ab-3effc87a3aad" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_8e5d1d2b-e97b-4e0b-8a43-1401489a2806" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_7f8b59e6-7747-4d08-a4ab-3effc87a3aad" xlink:to="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_8e5d1d2b-e97b-4e0b-8a43-1401489a2806" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_a851371d-aea6-4120-a72d-f21add7b93b7" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementGeographicalAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_8e5d1d2b-e97b-4e0b-8a43-1401489a2806" xlink:to="loc_srt_StatementGeographicalAxis_a851371d-aea6-4120-a72d-f21add7b93b7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_6de85e92-feee-4ee0-8560-48567f74a864" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_StatementGeographicalAxis_a851371d-aea6-4120-a72d-f21add7b93b7" xlink:to="loc_srt_SegmentGeographicalDomain_6de85e92-feee-4ee0-8560-48567f74a864" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_51c904f0-b83f-49d7-834f-bbd9d3ac59b7" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_SegmentGeographicalDomain_6de85e92-feee-4ee0-8560-48567f74a864" xlink:to="loc_country_US_51c904f0-b83f-49d7-834f-bbd9d3ac59b7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CA_2007eadb-d832-4977-8d54-7f21a6b2ebdb" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CA"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_SegmentGeographicalDomain_6de85e92-feee-4ee0-8560-48567f74a864" xlink:to="loc_country_CA_2007eadb-d832-4977-8d54-7f21a6b2ebdb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_bwxt_AllOtherCountriesMember_019c6720-e7a8-72be-8e48-74093ca0c18a" xlink:href="bwxt-20251231.xsd#bwxt_AllOtherCountriesMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_SegmentGeographicalDomain_6de85e92-feee-4ee0-8560-48567f74a864" xlink:to="loc_bwxt_AllOtherCountriesMember_019c6720-e7a8-72be-8e48-74093ca0c18a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_6d3a55f6-af8e-424c-bfa5-0a4ef64e3d00" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_8e5d1d2b-e97b-4e0b-8a43-1401489a2806" xlink:to="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_6d3a55f6-af8e-424c-bfa5-0a4ef64e3d00" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_88f67865-1e29-43de-a729-76e7ebb9220f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_6d3a55f6-af8e-424c-bfa5-0a4ef64e3d00" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_88f67865-1e29-43de-a729-76e7ebb9220f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/QuarterlyFinancialDataUnauditedSelectedQuarterlyFinancialInformationDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#QuarterlyFinancialDataUnauditedSelectedQuarterlyFinancialInformationDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/QuarterlyFinancialDataUnauditedSelectedQuarterlyFinancialInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_80025dec-2023-4da0-9c9f-80985c0d3e89" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_QuarterlyFinancialInformationDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_801c1eb3-77ca-46da-8898-06071461e22f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_80025dec-2023-4da0-9c9f-80985c0d3e89" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_801c1eb3-77ca-46da-8898-06071461e22f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_b1aaae93-f19a-4b0f-9f06-827889e02c97" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_80025dec-2023-4da0-9c9f-80985c0d3e89" xlink:to="loc_us-gaap_OperatingIncomeLoss_b1aaae93-f19a-4b0f-9f06-827889e02c97" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_5933bbfd-621d-4c98-a622-1a778f4632b0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_80025dec-2023-4da0-9c9f-80985c0d3e89" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_5933bbfd-621d-4c98-a622-1a778f4632b0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_87248686-4e7a-4abe-9aa6-d4275ddfc56a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_80025dec-2023-4da0-9c9f-80985c0d3e89" xlink:to="loc_us-gaap_NetIncomeLoss_87248686-4e7a-4abe-9aa6-d4275ddfc56a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicAbstract_60e48250-f73b-4ec4-a861-6b3323b3651e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareBasicAbstract"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_80025dec-2023-4da0-9c9f-80985c0d3e89" xlink:to="loc_us-gaap_EarningsPerShareBasicAbstract_60e48250-f73b-4ec4-a861-6b3323b3651e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_97cee72f-9f62-4929-a973-dab27f3e62b0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_60e48250-f73b-4ec4-a861-6b3323b3651e" xlink:to="loc_us-gaap_EarningsPerShareBasic_97cee72f-9f62-4929-a973-dab27f3e62b0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDilutedAbstract_c298ccfc-a468-4a89-b312-797eece10107" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareDilutedAbstract"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_80025dec-2023-4da0-9c9f-80985c0d3e89" xlink:to="loc_us-gaap_EarningsPerShareDilutedAbstract_c298ccfc-a468-4a89-b312-797eece10107" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_579cccc7-59e6-4500-ac05-537459980ac4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_c298ccfc-a468-4a89-b312-797eece10107" xlink:to="loc_us-gaap_EarningsPerShareDiluted_579cccc7-59e6-4500-ac05-537459980ac4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice_019c34fa-3f17-729e-9d11-6c27fc2d9d28" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_80025dec-2023-4da0-9c9f-80985c0d3e89" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice_019c34fa-3f17-729e-9d11-6c27fc2d9d28" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/QuarterlyFinancialDataUnauditedAdditionalInformationDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#QuarterlyFinancialDataUnauditedAdditionalInformationDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/QuarterlyFinancialDataUnauditedAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_94bf2209-afb4-4e2c-bf4a-191e9c9ba202" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_QuarterlyFinancialInformationDisclosureAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_820bf8e6-0da1-4442-bd56-56b59e40d271" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanActuarialGainLoss"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_94bf2209-afb4-4e2c-bf4a-191e9c9ba202" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_820bf8e6-0da1-4442-bd56-56b59e40d271" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.bwxt.com/role/EarningsPerShareComputationofBasicandDilutedEarningsPerShareDetails" xlink:type="simple" xlink:href="bwxt-20251231.xsd#EarningsPerShareComputationofBasicandDilutedEarningsPerShareDetails"/>
  <link:presentationLink xlink:role="http://www.bwxt.com/role/EarningsPerShareComputationofBasicandDilutedEarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_1a66f447-a5ba-4917-92ed-4d2c73ed0eab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_ff2eb9d7-41ab-4687-b863-35de090a81cc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_1a66f447-a5ba-4917-92ed-4d2c73ed0eab" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_ff2eb9d7-41ab-4687-b863-35de090a81cc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_7a9f050d-70e2-4346-8eff-2b913929bdcd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_ff2eb9d7-41ab-4687-b863-35de090a81cc" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_7a9f050d-70e2-4346-8eff-2b913929bdcd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_899f70a0-33b9-498a-8a05-efcf3f4e12a0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_ff2eb9d7-41ab-4687-b863-35de090a81cc" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_899f70a0-33b9-498a-8a05-efcf3f4e12a0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_3b27898c-ac3c-4d63-9b02-f7e75965a65f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasicAbstract_ff2eb9d7-41ab-4687-b863-35de090a81cc" xlink:to="loc_us-gaap_EarningsPerShareBasic_3b27898c-ac3c-4d63-9b02-f7e75965a65f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_46668366-80e8-4c34-a181-589d8848c7af" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_1a66f447-a5ba-4917-92ed-4d2c73ed0eab" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_46668366-80e8-4c34-a181-589d8848c7af" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_624aaf60-d7d1-44c2-977f-fbf0f5006765" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_46668366-80e8-4c34-a181-589d8848c7af" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_624aaf60-d7d1-44c2-977f-fbf0f5006765" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_4ae74945-01d3-44de-9aa2-e64e8e56bf8d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_46668366-80e8-4c34-a181-589d8848c7af" xlink:to="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_4ae74945-01d3-44de-9aa2-e64e8e56bf8d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_1786bba3-ae00-4437-8e7b-26934da73ee1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_4ae74945-01d3-44de-9aa2-e64e8e56bf8d" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_1786bba3-ae00-4437-8e7b-26934da73ee1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_df7cbd8c-06a8-4399-9833-a5680515438b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_46668366-80e8-4c34-a181-589d8848c7af" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_df7cbd8c-06a8-4399-9833-a5680515438b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_1b3b449b-ac71-4623-b932-b7f71505d645" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_46668366-80e8-4c34-a181-589d8848c7af" xlink:to="loc_us-gaap_EarningsPerShareDiluted_1b3b449b-ac71-4623-b932-b7f71505d645" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_4f2feec0-a487-4535-a25a-521f9f661317" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDilutedAbstract_46668366-80e8-4c34-a181-589d8848c7af" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_4f2feec0-a487-4535-a25a-521f9f661317" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure" xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#AwardTimingDisclosure"/>
  <link:presentationLink xlink:role="http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardTmgDiscLineItems" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AwardTmgDiscLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardTmgMnpiDiscTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AwardTmgMnpiDiscTextBlock"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AwardTmgDiscLineItems" xlink:to="loc_ecd_AwardTmgMnpiDiscTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardTmgMethodTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AwardTmgMethodTextBlock"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AwardTmgDiscLineItems" xlink:to="loc_ecd_AwardTmgMethodTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardTmgPredtrmndFlag" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AwardTmgPredtrmndFlag"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AwardTmgDiscLineItems" xlink:to="loc_ecd_AwardTmgPredtrmndFlag" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardTmgMnpiCnsdrdFlag" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AwardTmgMnpiCnsdrdFlag"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AwardTmgDiscLineItems" xlink:to="loc_ecd_AwardTmgMnpiCnsdrdFlag" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardTmgHowMnpiCnsdrdTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AwardTmgHowMnpiCnsdrdTextBlock"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AwardTmgDiscLineItems" xlink:to="loc_ecd_AwardTmgHowMnpiCnsdrdTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_MnpiDiscTimedForCompValFlag" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_MnpiDiscTimedForCompValFlag"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AwardTmgDiscLineItems" xlink:to="loc_ecd_MnpiDiscTimedForCompValFlag" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardsCloseToMnpiDiscTableTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AwardsCloseToMnpiDiscTableTextBlock"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AwardTmgDiscLineItems" xlink:to="loc_ecd_AwardsCloseToMnpiDiscTableTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardsCloseToMnpiDiscTable" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AwardsCloseToMnpiDiscTable"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AwardTmgDiscLineItems" xlink:to="loc_ecd_AwardsCloseToMnpiDiscTable" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_IndividualAxis" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_IndividualAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AwardsCloseToMnpiDiscTable" xlink:to="loc_ecd_IndividualAxis" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AllIndividualsMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AllIndividualsMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_IndividualAxis" xlink:to="loc_ecd_AllIndividualsMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardTypeAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AwardsCloseToMnpiDiscTable" xlink:to="loc_us-gaap_AwardTypeAxis" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AwardTypeAxis" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeStockOptionMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_us-gaap_EmployeeStockOptionMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockAppreciationRightsSARSMember" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockAppreciationRightsSARSMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_us-gaap_StockAppreciationRightsSARSMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardsCloseToMnpiDiscIndName" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AwardsCloseToMnpiDiscIndName"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AwardTmgDiscLineItems" xlink:to="loc_ecd_AwardsCloseToMnpiDiscIndName" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardUndrlygSecuritiesAmt" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AwardUndrlygSecuritiesAmt"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AwardTmgDiscLineItems" xlink:to="loc_ecd_AwardUndrlygSecuritiesAmt" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardExrcPrice" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AwardExrcPrice"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AwardTmgDiscLineItems" xlink:to="loc_ecd_AwardExrcPrice" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AwardGrantDateFairValue" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AwardGrantDateFairValue"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AwardTmgDiscLineItems" xlink:to="loc_ecd_AwardGrantDateFairValue" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_UndrlygSecurityMktPriceChngPct" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_UndrlygSecurityMktPriceChngPct"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AwardTmgDiscLineItems" xlink:to="loc_ecd_UndrlygSecurityMktPriceChngPct" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/ecd/role/ErrCompDisclosure" xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ErrCompDisclosure"/>
  <link:presentationLink xlink:role="http://xbrl.sec.gov/ecd/role/ErrCompDisclosure" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_RecoveryOfErrCompDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_ErrCompRecoveryTable" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_ErrCompRecoveryTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:to="loc_ecd_ErrCompRecoveryTable" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_RestatementDateAxis" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_RestatementDateAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_ErrCompRecoveryTable" xlink:to="loc_ecd_RestatementDateAxis" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_IndividualAxis" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_IndividualAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_ErrCompRecoveryTable" xlink:to="loc_ecd_IndividualAxis" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AllIndividualsMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AllIndividualsMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_IndividualAxis" xlink:to="loc_ecd_AllIndividualsMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_NonNeosMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_NonNeosMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AllIndividualsMember" xlink:to="loc_ecd_NonNeosMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_RestatementDeterminationDate" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_RestatementDeterminationDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:to="loc_ecd_RestatementDeterminationDate" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AggtErrCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AggtErrCompAmt"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:to="loc_ecd_AggtErrCompAmt" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_ErrCompAnalysisTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_ErrCompAnalysisTextBlock"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:to="loc_ecd_ErrCompAnalysisTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_StkPrcOrTsrEstimationMethodTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_StkPrcOrTsrEstimationMethodTextBlock"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:to="loc_ecd_StkPrcOrTsrEstimationMethodTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_OutstandingAggtErrCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_OutstandingAggtErrCompAmt"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:to="loc_ecd_OutstandingAggtErrCompAmt" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AggtErrCompNotYetDeterminedTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AggtErrCompNotYetDeterminedTextBlock"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:to="loc_ecd_AggtErrCompNotYetDeterminedTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_ForgoneRecoveryIndName" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_ForgoneRecoveryIndName"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:to="loc_ecd_ForgoneRecoveryIndName" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:to="loc_ecd_ForgoneRecoveryDueToExpenseOfEnforcementAmt" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:to="loc_ecd_ForgoneRecoveryDueToViolationOfHomeCountryLawAmt" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:to="loc_ecd_ForgoneRecoveryDueToDisqualificationOfTaxBenefitsAmt" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:to="loc_ecd_ForgoneRecoveryExplanationOfImpracticabilityTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_OutstandingRecoveryIndName" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_OutstandingRecoveryIndName"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:to="loc_ecd_OutstandingRecoveryIndName" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_OutstandingRecoveryCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_OutstandingRecoveryCompAmt"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:to="loc_ecd_OutstandingRecoveryCompAmt" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_RestatementDoesNotRequireRecoveryTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_RestatementDoesNotRequireRecoveryTextBlock"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_RecoveryOfErrCompDisclosureLineItems" xlink:to="loc_ecd_RestatementDoesNotRequireRecoveryTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/ecd/role/PvpDisclosure" xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#PvpDisclosure"/>
  <link:presentationLink xlink:role="http://xbrl.sec.gov/ecd/role/PvpDisclosure" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_PayVsPerformanceDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PvpTable" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_PvpTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_PvpTable" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_ExecutiveCategoryAxis" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_ExecutiveCategoryAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PvpTable" xlink:to="loc_ecd_ExecutiveCategoryAxis" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AllExecutiveCategoriesMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AllExecutiveCategoriesMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_ExecutiveCategoryAxis" xlink:to="loc_ecd_AllExecutiveCategoriesMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PeoMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_PeoMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AllExecutiveCategoriesMember" xlink:to="loc_ecd_PeoMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_NonPeoNeoMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_NonPeoNeoMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AllExecutiveCategoriesMember" xlink:to="loc_ecd_NonPeoNeoMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_IndividualAxis" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_IndividualAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PvpTable" xlink:to="loc_ecd_IndividualAxis" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AllIndividualsMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AllIndividualsMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_IndividualAxis" xlink:to="loc_ecd_AllIndividualsMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AdjToCompAxis" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AdjToCompAxis"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PvpTable" xlink:to="loc_ecd_AdjToCompAxis" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AllAdjToCompMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AllAdjToCompMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AdjToCompAxis" xlink:to="loc_ecd_AllAdjToCompMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AggtChngPnsnValInSummryCompstnTblForAplblYrMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AggtChngPnsnValInSummryCompstnTblForAplblYrMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AllAdjToCompMember" xlink:to="loc_ecd_AggtChngPnsnValInSummryCompstnTblForAplblYrMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AggtPnsnAdjsSvcCstMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AggtPnsnAdjsSvcCstMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AllAdjToCompMember" xlink:to="loc_ecd_AggtPnsnAdjsSvcCstMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PnsnAdjsSvcCstMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_PnsnAdjsSvcCstMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AggtPnsnAdjsSvcCstMember" xlink:to="loc_ecd_PnsnAdjsSvcCstMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PnsnAdjsPrrSvcCstMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_PnsnAdjsPrrSvcCstMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AggtPnsnAdjsSvcCstMember" xlink:to="loc_ecd_PnsnAdjsPrrSvcCstMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_EqtyAwrdsAdjsMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_EqtyAwrdsAdjsMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_AllAdjToCompMember" xlink:to="loc_ecd_EqtyAwrdsAdjsMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_EqtyAwrdsInSummryCompstnTblForAplblYrMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_EqtyAwrdsInSummryCompstnTblForAplblYrMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_EqtyAwrdsAdjsMember" xlink:to="loc_ecd_EqtyAwrdsInSummryCompstnTblForAplblYrMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_EqtyAwrdsAdjsExclgValRprtdInSummryCompstnTblMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_EqtyAwrdsAdjsExclgValRprtdInSummryCompstnTblMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_EqtyAwrdsAdjsMember" xlink:to="loc_ecd_EqtyAwrdsAdjsExclgValRprtdInSummryCompstnTblMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_YrEndFrValOfEqtyAwrdsGrntdInCvrdYrOutsdngAndUnvstdMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_YrEndFrValOfEqtyAwrdsGrntdInCvrdYrOutsdngAndUnvstdMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_EqtyAwrdsAdjsExclgValRprtdInSummryCompstnTblMember" xlink:to="loc_ecd_YrEndFrValOfEqtyAwrdsGrntdInCvrdYrOutsdngAndUnvstdMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_EqtyAwrdsAdjsExclgValRprtdInSummryCompstnTblMember" xlink:to="loc_ecd_ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_VstngDtFrValOfEqtyAwrdsGrntdAndVstdInCvrdYrMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_VstngDtFrValOfEqtyAwrdsGrntdAndVstdInCvrdYrMember"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_EqtyAwrdsAdjsExclgValRprtdInSummryCompstnTblMember" xlink:to="loc_ecd_VstngDtFrValOfEqtyAwrdsGrntdAndVstdInCvrdYrMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_EqtyAwrdsAdjsExclgValRprtdInSummryCompstnTblMember" xlink:to="loc_ecd_ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_FrValAsOfPrrYrEndOfEqtyAwrdsGrntdInPrrYrsFldVstngCondsDrngCvrdYrMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_FrValAsOfPrrYrEndOfEqtyAwrdsGrntdInPrrYrsFldVstngCondsDrngCvrdYrMember"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_EqtyAwrdsAdjsExclgValRprtdInSummryCompstnTblMember" xlink:to="loc_ecd_FrValAsOfPrrYrEndOfEqtyAwrdsGrntdInPrrYrsFldVstngCondsDrngCvrdYrMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_EqtyAwrdsAdjsExclgValRprtdInSummryCompstnTblMember" xlink:to="loc_ecd_DvddsOrOthrErngsPdOnEqtyAwrdsNtOthrwsRflctdInTtlCompForCvrdYrMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_MeasureAxis" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_MeasureAxis"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PvpTable" xlink:to="loc_ecd_MeasureAxis" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PvpTableTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_PvpTableTextBlock"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_PvpTableTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_CoSelectedMeasureName" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_CoSelectedMeasureName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_CoSelectedMeasureName" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_NamedExecutiveOfficersFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_NamedExecutiveOfficersFnTextBlock"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_NamedExecutiveOfficersFnTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PeerGroupIssuersFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_PeerGroupIssuersFnTextBlock"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_PeerGroupIssuersFnTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_ChangedPeerGroupFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_ChangedPeerGroupFnTextBlock"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_ChangedPeerGroupFnTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PeoTotalCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_PeoTotalCompAmt"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_PeoTotalCompAmt" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PeoActuallyPaidCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_PeoActuallyPaidCompAmt"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_PeoActuallyPaidCompAmt" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AdjToPeoCompFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AdjToPeoCompFnTextBlock"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_AdjToPeoCompFnTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_NonPeoNeoAvgTotalCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_NonPeoNeoAvgTotalCompAmt"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_NonPeoNeoAvgTotalCompAmt" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_NonPeoNeoAvgCompActuallyPaidAmt" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_NonPeoNeoAvgCompActuallyPaidAmt"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_NonPeoNeoAvgCompActuallyPaidAmt" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AdjToNonPeoNeoCompFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AdjToNonPeoNeoCompFnTextBlock"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_AdjToNonPeoNeoCompFnTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_EquityValuationAssumptionDifferenceFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_EquityValuationAssumptionDifferenceFnTextBlock"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_EquityValuationAssumptionDifferenceFnTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_CompActuallyPaidVsNetIncomeTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_CompActuallyPaidVsNetIncomeTextBlock"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_CompActuallyPaidVsNetIncomeTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TotalShareholderRtnVsPeerGroupTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TotalShareholderRtnVsPeerGroupTextBlock"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_TotalShareholderRtnVsPeerGroupTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_CompActuallyPaidVsOtherMeasureTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_CompActuallyPaidVsOtherMeasureTextBlock"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_CompActuallyPaidVsOtherMeasureTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TabularListTableTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TabularListTableTextBlock"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_TabularListTableTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TotalShareholderRtnAmt" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TotalShareholderRtnAmt"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_TotalShareholderRtnAmt" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PeerGroupTotalShareholderRtnAmt" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_PeerGroupTotalShareholderRtnAmt"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_PeerGroupTotalShareholderRtnAmt" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_CoSelectedMeasureAmt" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_CoSelectedMeasureAmt"/>
    <link:presentationArc order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_CoSelectedMeasureAmt" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_OtherPerfMeasureAmt" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_OtherPerfMeasureAmt"/>
    <link:presentationArc order="24" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_OtherPerfMeasureAmt" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AdjToCompAmt" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AdjToCompAmt"/>
    <link:presentationArc order="25" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_AdjToCompAmt" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PeoName" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_PeoName"/>
    <link:presentationArc order="26" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_PeoName" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_MeasureName" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_MeasureName"/>
    <link:presentationArc order="27" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_MeasureName" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_NonGaapMeasureDescriptionTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_NonGaapMeasureDescriptionTextBlock"/>
    <link:presentationArc order="28" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_NonGaapMeasureDescriptionTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_Additional402vDisclosureTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_Additional402vDisclosureTextBlock"/>
    <link:presentationArc order="29" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_Additional402vDisclosureTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_PnsnBnftsAdjFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_PnsnBnftsAdjFnTextBlock"/>
    <link:presentationArc order="30" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_PnsnBnftsAdjFnTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_EqtyAwrdsAdjFnTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_EqtyAwrdsAdjFnTextBlock"/>
    <link:presentationArc order="31" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_PayVsPerformanceDisclosureLineItems" xlink:to="loc_ecd_EqtyAwrdsAdjFnTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements" xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#InsiderTradingArrangements"/>
  <link:presentationLink xlink:role="http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ecd_InsiderTradingArrLineItems" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_InsiderTradingArrLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TradingArrByIndTable" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TradingArrByIndTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_InsiderTradingArrLineItems" xlink:to="loc_ecd_TradingArrByIndTable" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TradingArrAxis" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TradingArrAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_TradingArrByIndTable" xlink:to="loc_ecd_TradingArrAxis" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AllTradingArrangementsMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AllTradingArrangementsMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_TradingArrAxis" xlink:to="loc_ecd_AllTradingArrangementsMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_IndividualAxis" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_IndividualAxis"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_TradingArrByIndTable" xlink:to="loc_ecd_IndividualAxis" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AllIndividualsMember" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_AllIndividualsMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_IndividualAxis" xlink:to="loc_ecd_AllIndividualsMember" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_MtrlTermsOfTrdArrTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_MtrlTermsOfTrdArrTextBlock"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_InsiderTradingArrLineItems" xlink:to="loc_ecd_MtrlTermsOfTrdArrTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TrdArrIndName" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TrdArrIndName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_InsiderTradingArrLineItems" xlink:to="loc_ecd_TrdArrIndName" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TrdArrIndTitle" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TrdArrIndTitle"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_InsiderTradingArrLineItems" xlink:to="loc_ecd_TrdArrIndTitle" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_Rule10b51ArrAdoptedFlag" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_Rule10b51ArrAdoptedFlag"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_InsiderTradingArrLineItems" xlink:to="loc_ecd_Rule10b51ArrAdoptedFlag" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_NonRule10b51ArrAdoptedFlag" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_NonRule10b51ArrAdoptedFlag"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_InsiderTradingArrLineItems" xlink:to="loc_ecd_NonRule10b51ArrAdoptedFlag" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TrdArrAdoptionDate" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TrdArrAdoptionDate"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_InsiderTradingArrLineItems" xlink:to="loc_ecd_TrdArrAdoptionDate" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_Rule10b51ArrTrmntdFlag" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_Rule10b51ArrTrmntdFlag"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_InsiderTradingArrLineItems" xlink:to="loc_ecd_Rule10b51ArrTrmntdFlag" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_NonRule10b51ArrTrmntdFlag" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_NonRule10b51ArrTrmntdFlag"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_InsiderTradingArrLineItems" xlink:to="loc_ecd_NonRule10b51ArrTrmntdFlag" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TrdArrTerminationDate" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TrdArrTerminationDate"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_InsiderTradingArrLineItems" xlink:to="loc_ecd_TrdArrTerminationDate" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TrdArrExpirationDate" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TrdArrExpirationDate"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_InsiderTradingArrLineItems" xlink:to="loc_ecd_TrdArrExpirationDate" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TrdArrDuration" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TrdArrDuration"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_InsiderTradingArrLineItems" xlink:to="loc_ecd_TrdArrDuration" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_TrdArrSecuritiesAggAvailAmt" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_TrdArrSecuritiesAggAvailAmt"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_InsiderTradingArrLineItems" xlink:to="loc_ecd_TrdArrSecuritiesAggAvailAmt" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc" xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#InsiderTradingPoliciesProc"/>
  <link:presentationLink xlink:role="http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ecd_InsiderTradingPoliciesProcLineItems" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_InsiderTradingPoliciesProcLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_InsiderTrdPoliciesProcAdoptedFlag" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_InsiderTrdPoliciesProcAdoptedFlag"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_InsiderTradingPoliciesProcLineItems" xlink:to="loc_ecd_InsiderTrdPoliciesProcAdoptedFlag" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock" xlink:href="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd#ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_ecd_InsiderTradingPoliciesProcLineItems" xlink:to="loc_ecd_InsiderTrdPoliciesProcNotAdoptedTextBlock" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
