Able seamen—unlimited

The required service for the endorsement of able seaman—unlimited, qualified for unlimited service on a vessel on any waters, is at least 18 months 11 So in original. Probably should be “18 months’ ”. service on deck on board vessels operating at sea or on the Great Lakes. (Source: (Pub. L. 98–89, Aug. 26, 1983, 97 Stat. 543; Pub. L. 119–60, div. G, title LXXIII, § 7301(d)(2), Dec. 18, 2025, 139 Stat. 1753.))