[Code of Federal Regulations] [Title 46, Volume 1] [Revised as of January 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR13.119] [Page 233] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PART 13_CERTIFICATION OF TANKERMEN--Table of Contents Subpart A_General Sec. 13.119 Expiration of endorsement. An endorsement as tankerman is valid for the duration of the MMD.