boatswain

noun5

1. •
   A person aboard ship who is in charge of various maritime affairs.
2. •
   The officer (or warrant officer) in charge of sails, rigging, anchors, cables etc. and all work on deck of a sailing ship.
3. •
   The petty officer of a merchant ship who controls the work of other seamen.
4. •
   A kind of gull, the jaeger.
5. •
   The tropicbird.