X0101 EFFECT 33 LIVE 2009-11-30 17:00:00

F-4

0001037962 CGG VERITAS 333-162041 0001387047 ALITHEIA RESOURCES INC. 333-162041-15 0001332598 CGG AMERICAS INC. 333-162041-14 0001387044 CGGVERITAS LAND (U.S.) INC. 333-162041-13 0001387046 CGGVERITAS SERVICES (U.S.) INC. 333-162041-12 0000028866 CGGVERITAS SERVICES HOLDING (U.S.) INC. 333-162041-11 0001332640 Sercel Inc. 333-162041-10 0001387055 Veritas DGC Asia Pacific Ltd. 333-162041-09 0001387045 Veritas Geophysical (Mexico) LLC 333-162041-08 0001387056 Veritas Investments Inc. 333-162041-07 0001387058 Viking Maritime Inc. 333-162041-06 0001332365 CGG Canada Services Ltd 333-162041-05 0001332599 CGG Marine Resources Norge A/S 333-162041-04 0001332625 Sercel Australia Pty Ltd 333-162041-03 0001332641 SERCEL Canada Ltd 333-162041-02 0001472245 CGGVeritas Services Holding B.V. 333-162041-01