UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: October 20, 2011 10:00 A.M.
Form: F-4
CIK: 0001037962
Company Name: CGG VERITAS
File Number: 333-177040
CIK: 0001529330
Company Name: CGGVeritas Services (UK) Holding B.V.
File Number: 333-177040-14
CIK: 0001387046
Company Name: CGGVERITAS SERVICES (U.S.) INC.
File Number: 333-177040-13
CIK: 0001332625
Company Name: Sercel Australia Pty Ltd
File Number: 333-177040-12
CIK: 0001332641
Company Name: SERCEL Canada Ltd
File Number: 333-177040-11
CIK: 0001332640
Company Name: Sercel Inc.
File Number: 333-177040-10
CIK: 0001387045
Company Name: Veritas Geophysical (Mexico) LLC
File Number: 333-177040-09
CIK: 0001387056
Company Name: Veritas Investments Inc.
File Number: 333-177040-08
CIK: 0001387058
Company Name: Viking Maritime Inc.
File Number: 333-177040-07
CIK: 0001387047
Company Name: ALITHEIA RESOURCES INC.
File Number: 333-177040-06
CIK: 0001332365
Company Name: CGG Canada Services Ltd
File Number: 333-177040-05
CIK: 0001332599
Company Name: CGG Marine Resources Norge A/S
File Number: 333-177040-04
CIK: 0001387044
Company Name: CGGVERITAS LAND (U.S.) INC.
File Number: 333-177040-03
CIK: 0001472245
Company Name: CGGVeritas Services Holding B.V.
File Number: 333-177040-02
CIK: 0000028866
Company Name: CGGVERITAS SERVICES HOLDING (U.S.) INC.
File Number: 333-177040-01