Deck Rating
F3. Seafaring Life, Education, Professions and InstitutionsDefinition
Non-officer crew member of the deck department.
Deck rating is the collective term for non-officer crew in the deck department: ordinary seamen, able seamen, and the boatswain who supervises them. Ratings forming part of a navigational watch are certificated under STCW Regulation II/4, and the able seafarer deck grade under Regulation II/5. They handle mooring, cargo and hatch work, deck and hull maintenance, lookout, and helm duties under the officer of the watch and the chief officer.
Source: STCW Regulations II/4 and II/5