Boatswain

n.
  1. (Naut.) An officer who has charge of the boats, sails, rigging, colors, anchors, cables, cordage, etc., of a ship, and who also summons the crew, and performs other duties.
    1. The jager gull.
    2. The tropic bird.
    Boatswain's mate ,
    an assistant of the boatswain.