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 battle group or a small fleet if they are the senior-most officer present.

Captain is the highest rank of a Spartan as held by Serin Osman, although Osman is a washout and not a true Spartan.

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. Other than sharing a name and both being officer ranks, the two captain ranks are completely unrelated.