Captain is a military rank, the equivalent of which is used by the service organizations of many civilizations. The title of Captain is often used by vessel commanders and, as a naval rank, in many earth navies and Starfleet, is above commander but below commodore. As an infantry rank, captains rank subordinate to a major and above a first lieutenant.

Starfleet captains

By the mid 22nd century, captain was a senior line officer rank of most space services and usually given to the commanding officers of starships. This naval rank is equivalent to the infantry rank of colonel, the Folian Star Empire's Major grade, the Candorian Union's title of li’ass, the Ferengi Alliance's quasi-military DaiMon title, the Breen Confederacy's dalsh, and lower grades of the Cardassian Union's gul (senior guls were closer to a rear admiral).

On starships, the term captain is also often used as a synonym to commanding officer. Proper naval parlance says that, even if a vessel is commanded by an officer whose rank is lower than captain, that officer is still able to be referred to as a captain while on the deck of their own vessel, no matter their literal commissioned rank.

Captains of starships, often located hundreds of light years away from and out of communications with higher authority, must be able to function autonomously and make independent command decisions affecting Federation policy and countless lives. Accordingly, few Starfleet officers ever gain the captaincy of a starship, the result of decades of sustained excellence as a Starfleet leader. A senior captain given a large degree of responsibility or administrative assignment is sometimes given the title of fleet captain.

Rank insignia of Starfleet captains

Service Duty
2143-2161 Earth cmd capt-1-
2230-2239 2230s cmd capt-1-
2239-2255 2250s conn captain sleeve-1-
2255-2272 2270 Command Captain
2272-2285 2270 - CAPT (White)-1-
2285-2350 2285 Command Captain
2350-2364 2350 - CAPT (Command)-1-
2364-2372 2366 S-Command Captain 2366 D-Command Captain
2372-2386 2373 Command Captain
2386-2409 Red Capt 2400s
CAPT (2410s).png
2410s capt red white.png

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