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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 LaP+4TuOdAOtK2Hmep5VkJxboYd7BHIL3lfsNRkE09iK8wJAAi0gvzKl59sURTRu
 LgLyQIn5Kpo294CEK1jJEw==

<SEC-DOCUMENT>0000061986-04-000004.txt : 20040107
<SEC-HEADER>0000061986-04-000004.hdr.sgml : 20040107
<ACCEPTANCE-DATETIME>20040107130556
ACCESSION NUMBER:		0000061986-04-000004
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040105
FILED AS OF DATE:		20040107

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GROWCOCK TERRY D
		CENTRAL INDEX KEY:			0001205084

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11978
		FILM NUMBER:		04512518

	BUSINESS ADDRESS:	
		STREET 1:		C/O MANITOWOC CO INC
		STREET 2:		P O BOX 66
		CITY:			MANITOWOC
		STATE:			WI
		ZIP:			54221-0066
		BUSINESS PHONE:		9206844410

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MANITOWOC CO INC
		CENTRAL INDEX KEY:			0000061986
		STANDARD INDUSTRIAL CLASSIFICATION:	CONSTRUCTION MACHINERY & EQUIP [3531]
		IRS NUMBER:				390448110
		STATE OF INCORPORATION:			WI
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		P O BOX 66
		CITY:			MANITOWOC
		STATE:			WI
		ZIP:			54221-0066
		BUSINESS PHONE:		9206844410

	MAIL ADDRESS:	
		STREET 1:		P O BOX 66
		CITY:			MANITOWOC
		STATE:			WI
		ZIP:			54221-0066
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>c0001205084d20040107f4f.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2004-01-05</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000061986</issuerCik><issuerName>MANITOWOC CO INC</issuerName>        <issuerTradingSymbol>MTW</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001205084</rptOwnerCik><rptOwnerName>GROWCOCK TERRY D</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>2400 SOUTH 44TH STREET</rptOwnerStreet1><rptOwnerStreet2></rptOwnerStreet2><rptOwnerCity>MANITOWOC</rptOwnerCity><rptOwnerState>WI</rptOwnerState><rptOwnerZipCode>54221-0066</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>CEO &amp; President</officerTitle><otherText></otherText></reportingOwnerRelationship></reportingOwner>
<nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2004-01-05</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>1600</value></transactionShares><transactionPricePerShare><value>19.5</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>40935.849</value><footnoteId id="F1"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value></natureOfOwnership></ownershipNature></nonDerivativeTra
nsaction><nonDerivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2004-01-05</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>1600</value></transactionShares><transactionPricePerShare><value>32.5169</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>39335.849</value><footnoteId id="F1"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value></natureOfOwnership></ownershipNature></nonDerivativeTransaction
><nonDerivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2004-01-06</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>6800</value></transactionShares><transactionPricePerShare><value>19.5</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>46135.849</value><footnoteId id="F1"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value></natureOfOwnership></ownershipNature></nonDerivativeTransaction><nonDeriva
tiveTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2004-01-06</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>6800</value></transactionShares><transactionPricePerShare><value>32.5185</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>39335.849</value><footnoteId id="F1"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value></natureOfOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeHold
ing><securityTitle><value>Common Stock</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>2015.529</value><footnoteId id="F2"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>RSVP 401k Plan</value></natureOfOwnership></ownershipNature></nonDerivativeHolding></nonDerivativeTable><derivativeTable><derivativeTransaction><securityTitle><value>Emp StockOption (right to buy)</value></securityTitle><conversionOrExercisePrice><value>19.5</value></conversionOrExercisePrice><transactionDate><value>2004-01-05</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>1600</value></transactionShares><transactionPricePerShare><value>19.5</value></tran
sactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2000-10-17</value><footnoteId id="F3"/></exerciseDate><expirationDate><value>2010-10-17</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>1600</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>148400</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value></natureOfOwnership></ownershipNature></derivativeTransaction><derivativeTransaction><securityTitle><value>Emp StockOption (right to buy)</value></securityTitle><conversionOrExercisePrice><value>19.5</value></conversionOrExercisePrice><transactionDate><value>2004-01-06</value></transactionDate><deemedExecutionDate
></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>6800</value></transactionShares><transactionPricePerShare><value>19.5</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2000-10-17</value><footnoteId id="F3"/></exerciseDate><expirationDate><value>2010-10-17</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>6800</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>141600</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value></
natureOfOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Includes amount and price of shares acquired in exempt transactions pursuant to a Shareholder Dividend Reinvestment Plan.</footnote><footnote id="F2">Consists of shares held under the Company's 401(k) plan, The Manitowoc Company, Inc. RSVP Profit Sharing Plan, including 19.8085 shares acquired in transactions occurring between 02/22/02 and 12/31/02, which are exempt from Section 16(b) pursuant to Rule 16b-3 and exempt from reporting pursuant to Rule 16a-3(f)(1)(i)(B).  The information in this report is based on a plan statement dated as of 12/31/02.  From time to time the plan administrator collects maintenance fees related to the RSVP Plan, which may result in the number of shares held by a participant in the RSVP Plan declining by a marginal amount.</footnote><footnote id="F3">Options vested in 25% increments beginning on date indicated.</footnote></footnotes><ownerSignature><signatureName>Maurice D. 
Jones, by Power of Attorney</signatureName><signatureDate>2004-01-07</signatureDate></ownerSignature></ownershipDocument>

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