<SEC-DOCUMENT>0001492520-13-000024.txt : 20130611 <SEC-HEADER>0001492520-13-000024.hdr.sgml : 20130611 <ACCEPTANCE-DATETIME>20130611145355 ACCESSION NUMBER: 0001492520-13-000024 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20130607 FILED AS OF DATE: 20130611 DATE AS OF CHANGE: 20130611 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Babcock & Wilcox Co CENTRAL INDEX KEY: 0001486957 STANDARD INDUSTRIAL CLASSIFICATION: ENGINES & TURBINES [3510] IRS NUMBER: 800558025 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 13024 BALLANTYNE CORPORATE PLACE STREET 2: SUITE 700 CITY: CHARLOTTE STATE: NC ZIP: 28277 BUSINESS PHONE: 434-522-6800 MAIL ADDRESS: STREET 1: 13024 BALLANTYNE CORPORATE PLACE STREET 2: SUITE 700 CITY: CHARLOTTE STATE: NC ZIP: 28277 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: GOLDMAN ROBERT W CENTRAL INDEX KEY: 0001217427 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-34658 FILM NUMBER: 13905905 MAIL ADDRESS: STREET 1: 1001 LOUISIANA ST CITY: HOUSTON STATE: TX ZIP: 77002 </SEC-HEADER> <DOCUMENT> <TYPE>4 <SEQUENCE>1 <FILENAME>edgar.xml <DESCRIPTION>PRIMARY DOCUMENT <TEXT> <XML> <?xml version="1.0"?> <ownershipDocument> <schemaVersion>X0306</schemaVersion> <documentType>4</documentType> <periodOfReport>2013-06-07</periodOfReport> <issuer> <issuerCik>0001486957</issuerCik> <issuerName>Babcock & Wilcox Co</issuerName> <issuerTradingSymbol>BWC</issuerTradingSymbol> </issuer> <reportingOwner> <reportingOwnerId> <rptOwnerCik>0001217427</rptOwnerCik> <rptOwnerName>GOLDMAN ROBERT W</rptOwnerName> </reportingOwnerId> <reportingOwnerAddress> <rptOwnerStreet1>13024 BALLANTYNE CORPORATE PLACE</rptOwnerStreet1> <rptOwnerStreet2>SUITE 700</rptOwnerStreet2> <rptOwnerCity>CHARLOTTE</rptOwnerCity> <rptOwnerState>NC</rptOwnerState> <rptOwnerZipCode>28277</rptOwnerZipCode> <rptOwnerStateDescription></rptOwnerStateDescription> </reportingOwnerAddress> <reportingOwnerRelationship> <isDirector>1</isDirector> <isOfficer>0</isOfficer> <isTenPercentOwner>0</isTenPercentOwner> <isOther>0</isOther> </reportingOwnerRelationship> </reportingOwner> <derivativeTable> <derivativeTransaction> <securityTitle> <value>Dividend Equivalent Rights</value> </securityTitle> <conversionOrExercisePrice> <footnoteId id="F1"/> </conversionOrExercisePrice> <transactionDate> <value>2013-06-07</value> </transactionDate> <transactionCoding> <transactionFormType>4</transactionFormType> <transactionCode>A</transactionCode> <equitySwapInvolved>0</equitySwapInvolved> </transactionCoding> <transactionAmounts> <transactionShares> <value>7.45</value> </transactionShares> <transactionPricePerShare> <value>0</value> </transactionPricePerShare> <transactionAcquiredDisposedCode> <value>A</value> </transactionAcquiredDisposedCode> </transactionAmounts> <exerciseDate> <footnoteId id="F1"/> </exerciseDate> <expirationDate> <footnoteId id="F1"/> </expirationDate> <underlyingSecurity> <underlyingSecurityTitle> <value>Common Stock</value> </underlyingSecurityTitle> <underlyingSecurityShares> <value>7.45</value> </underlyingSecurityShares> </underlyingSecurity> <postTransactionAmounts> <sharesOwnedFollowingTransaction> <value>7.45</value> </sharesOwnedFollowingTransaction> </postTransactionAmounts> <ownershipNature> <directOrIndirectOwnership> <value>D</value> </directOrIndirectOwnership> <natureOfOwnership> <value></value> </natureOfOwnership> </ownershipNature> </derivativeTransaction> </derivativeTable> <footnotes> <footnote id="F1">The dividend equivalent rights accrued on two restricted stock unit grants of which the reporting person has elected to defer receipt of a portion of the shares underlying the RSU's. Each RSU and DER represent a contingent right to receive one share of BWC common stock. In accordance with the deferral election, the DERs will be delivered to the reporting person proportionately with the RSU's to which they relate.</footnote> </footnotes> <remarks></remarks> <ownerSignature> <signatureName>Robert W. Goldman, by Angela P. Winter, attorney-in-fact</signatureName> <signatureDate>2013-06-11</signatureDate> </ownerSignature> </ownershipDocument> </XML> </TEXT> </DOCUMENT> </SEC-DOCUMENT>