<SEC-DOCUMENT>0001209191-18-043881.txt : 20180725
<SEC-HEADER>0001209191-18-043881.hdr.sgml : 20180725
<ACCEPTANCE-DATETIME>20180725161254
ACCESSION NUMBER:		0001209191-18-043881
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180715
FILED AS OF DATE:		20180725
DATE AS OF CHANGE:		20180725

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TIDEWATER INC
		CENTRAL INDEX KEY:			0000098222
		STANDARD INDUSTRIAL CLASSIFICATION:	WATER TRANSPORTATION [4400]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33607
		FILM NUMBER:		18968847

	BUSINESS ADDRESS:	
		STREET 1:		6002 ROGERDALE ROAD
		STREET 2:		SUITE 600
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77072
		BUSINESS PHONE:		7134705300

	MAIL ADDRESS:	
		STREET 1:		6002 ROGERDALE ROAD
		STREET 2:		SUITE 600
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77072

	FORMER NAME:	
		FORMER CONFORMED NAME:	TIDEWATER MARINE SERVICE INC
		DATE OF NAME CHANGE:	19780724

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GULFMARK OFFSHORE INC
		CENTRAL INDEX KEY:			0001030749
		STANDARD INDUSTRIAL CLASSIFICATION:	OIL & GAS FILED MACHINERY & EQUIPMENT [3533]
		IRS NUMBER:				760526032
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		10111 RICHMOND AVE
		STREET 2:		STE 340
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77042
		BUSINESS PHONE:		7139639522

	MAIL ADDRESS:	
		STREET 1:		10111 RICHMOND AVE
		STREET 2:		STE 340
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77042
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc3.xml
<DESCRIPTION>FORM 3 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2018-07-15</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001030749</issuerCik>
        <issuerName>GULFMARK OFFSHORE INC</issuerName>
        <issuerTradingSymbol>GLF</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000098222</rptOwnerCik>
            <rptOwnerName>TIDEWATER INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>6002 ROGERDALE ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 600</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77072</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>No securities beneficially owned</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">On July 15, 2018, Tidewater Inc. (&quot;Tidewater&quot;) entered into an Agreement and Plan of Merger (the &quot;Merger Agreement&quot;) with GulfMark Offshore, Inc. (&quot;GulfMark&quot;), which, among other things, contemplates the acquisition by Tidewater of the entire equity interest in GulfMark, including all shares of its common stock, $0.01 par value per share (the &quot;GulfMark Common Stock&quot;).</footnote>
        <footnote id="F2">Concurrently with execution of the Merger Agreement, each of Raging Capital Management, LLC (&quot;Raging&quot;) and 5 Essex, L.P. (&quot;5 Essex&quot; and, together with Raging, the &quot;GulfMark Supporting Stockholders&quot;), entered into a voting and support agreement with Tidewater (together, the &quot;Voting Agreements&quot;), pursuant to which the GulfMark Supporting Stockholders have agreed, among other things and subject to the terms and conditions of the Voting Agreements, to vote 1,709,464 shares of GulfMark Common Stock, in the case of Raging, and 914,882 shares of GulfMark Common Stock, in the case of 5 Essex (in the aggregate, the &quot;Covered Shares&quot;), beneficially owned by each, respectively, in favor of the adoption of the Merger Agreement and the approval of all transactions contemplated by the Merger Agreement (together, the &quot;Transactions&quot;).</footnote>
        <footnote id="F3">Tidewater does not have any pecuniary interest in the Covered Shares, any other shares of GulfMark Common Stock, or any other GulfMark securities.  The purpose of the Voting Agreements is to facilitate the adoption of the Merger Agreement and approval of the Transactions by the stockholders of GulfMark.  Through its execution of the Voting Agreements, Tidewater may be deemed to have acquired shared voting power with respect to the Covered Shares.  However, the filing of this Initial Statement of Beneficial Ownership of Securities on Form 3 shall not be construed as an admission by Tidewater that it is the beneficial owner of any shares of GulfMark Common Stock for purposes of Section 13(d), 13(g) or 16 of the Securities Exchange Act of 1934, as amended.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Bruce D. Lundstrom, EVP &amp; General Counsel, Tidewater Inc.</signatureName>
        <signatureDate>2018-07-25</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
