<SEC-DOCUMENT>0001564590-18-021295-index.html : 20180810
<SEC-HEADER>0001564590-18-021295.hdr.sgml : 20180810
<ACCEPTANCE-DATETIME>20180810170257
ACCESSION NUMBER:		0001564590-18-021295
CONFORMED SUBMISSION TYPE:	425
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20180810
DATE AS OF CHANGE:		20180810

SUBJECT COMPANY:	

	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

	FILING VALUES:
		FORM TYPE:		425
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33607
		FILM NUMBER:		181009555

	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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TIDEWATER INC
		CENTRAL INDEX KEY:			0000098222
		STANDARD INDUSTRIAL CLASSIFICATION:	WATER TRANSPORTATION [4400]
		IRS NUMBER:				720487776
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		425

	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 COMPANY:	
		FORMER CONFORMED NAME:	TIDEWATER MARINE SERVICE INC
		DATE OF NAME CHANGE:	19780724
</SEC-HEADER>
<DOCUMENT>
<TYPE>425
<SEQUENCE>1
<FILENAME>tdw-425.htm
<DESCRIPTION>425
<TEXT>
Document 1 - file: tdw-425.htm

</DOCUMENT>
</SEC-DOCUMENT>