coxswain

In a ship's boat, the helmsman given charge of the boat's crew.

The member of a crew who steers the shell and coordinates the power and rhythm of the rowers.

The second or third mate of a vessel, in charge of the master's barge.

A rank or position.

“British Royal Navy Cadets Cadet Coxswain is the highest normal rank which may be achieved.”

(intransative) To act as coxswain for.

“to coxswain a boat”