Where does a sailor work?

Explanation

A sailor works on a ship. An able seaman has experience in all routine work on a ship. Previously, an able seaman would acquire skills in maintenance of ropes and rigging, masts and sails. His rank was similar to an apprentice graduate's rank in craftsmanship. An able seaman is a term for a conscript sailor, who for 18 months has been in service as a seaman.