[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: 46CFR12.10-1] [Page 219] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PART 12_CERTIFICATION OF SEAMEN--Table of Contents Subpart 12.10_Lifeboatman Sec. 12.10-1 Certification required. Every person employed in a rating as lifeboatman on any United States vessel requiring certificated lifeboatmen shall produce a certificate as lifeboatman or merchant mariner's document endorsed as lifeboatman or able seaman to the shipping commissioner, United States collector or deputy collector of customs, or master before signing articles of agreement. No certificate of efficiency as lifeboatman is required of any person employed on any unrigged vessel, except on a seagoing barge and on a tank barge navigating waters other than rivers and/or canals.