[Code of Federal Regulations] [Title 46, Volume 1] [Revised as of October 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR12.01-11] [Page 199] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PART 12_CERTIFICATION OF SEAMEN--Table of Contents Subpart 12.01_General Sec. 12.01-11 Transportation Worker Identification Credential. By April 15, 2009 all mariners holding a Merchant Mariner's Document or STCW endorsement issued under this part must hold a valid Transportation Worker Identification Credential (TWIC) issued by the Transportation Security Administration under 49 CFR part 1572. Failure to obtain or hold a valid TWIC may serve as a basis for suspension or revocation of a mariner's license, COR or STCW endorsement under 46 U.S.C. 7702 and 7703. [CG-2006-24196, 72 FR 3588, Jan. 25, 2007, as amended at 73 FR 25566, May 7, 2008]