1) Bridge occupant 2) Helmsman 3) Jack 4) Jack-tar 5) Mariner 6) Old salt 7) One at the helm 8) Sea dog 9) Seafarer 10) Seaman 11) Ship pilot 12) Steerer 13) The person who steers a ship Found on https://www.crosswordclues.com/clue/steersman
Steers'man (stērz'm a n) noun ; plural Steersmen (-m e n). [ Steer a rudder + man : confer Anglo-Saxon steórmann .] One who steers; the helmsman of a vessel. Milton. Found on http://www.encyclo.co.uk/webster/S/191