Captain (Navy)

Captain is a commissioned officer rank of the UNSC Navy, and is the Naval equivalent of a Colonel in the UNSC Marine Corps, UNSC Air Force, and UNSC Army.

Navy Captains typically command a single ship-typically a class larger than a frigate but smaller than a carrier. Navy Captains may also command a battlegroup or a small fleet if they are the senior-most officer present.

Captains are sometimes referred to informally as "Skipper" and "the Old Man."

Relation to Marine, Air Force, and Army Captain
The Marine Corps, Air Force, and Army rank of Captain is ranked three pay grades lower than a Navy Captain, and has no special command authority with respect to a ship.