46 C.F.R. § 12.05-11 General provisions respecting merchant mariner's document endorsed for service as able seamen.
Title 46 - Shipping
(a) The holder of a merchant mariner's document endorsed for the rating of able seamen may serve in any unlicensed rating in the deck department without obtaining an additional endorsement; provided, however, that the holder shall hold the appropriate endorsement under the STCW (incorporated by reference in §12.01–3) when serving in as a “rating forming part of a navigational watch” on a seagoing ship of 500 GT or more. (b) A merchant mariner's document endorsed as able seaman will also be considered a certificate of efficiency as lifeboatman without further endorsement. (c) This type of document will describe clearly the type of able seaman certificate which it represents, e.g.: able seaman—any waters; able seaman—any waters, 12 months; able seaman—Great Lakes, 18 months; able seaman—on freight vessels, 500 gross tons or less on bays or sounds, and on tugs, towboats, and barges on any waters. [CGFR 65–50, 30 FR 16640, Dec. 30, 1965, as amended by CGD 95–062, 62 FR 34537, June 26, 1997; USCG-1999–5610, 67 FR 66068, Oct. 30, 2002]
Title 46: Shipping
PART 12—CERTIFICATION OF SEAMEN
Subpart 12.05—Able Seamen
§ 12.05-11 General provisions respecting merchant mariner's document endorsed for service as able seamen.
