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First officer

From Memory Alpha, the free Star Trek reference

(Redirected from XO)

Aboard a starship the first officer was the second-in-command, just below the captain. On a Federation starship, the first officer had the following functions:

In Starfleet the position was usually held by an officer with the rank of commander or lieutenant commander. The position was also referred to as executive officer, or XO

In Starfleet's early period of existence, the first officer would accompany the captain on landing parties, depending on the situation. By the 24th century, however, it was the first officer who usually led away teams while the captain remained on the ship.

In the 22nd and 23rd centuries, the first officer would serve as a department head first and a commander second (similar to the second officer), and only took command when the captain left the bridge, as such, there was no first officer's station as there would be in the 24th century, as the XO would alternate between the command chair and their station as a department head.

Some noted first officers in Starfleet history were:

The Starfleet of the alternate reality established in 2233 by the temporal incursion of the Romulan Nero had the following noteworthy first officers:


First officers

Subcmdr./Cmdr. T'Pol

Cmdr./Cpt Spock

Cmdr. William T. Riker

Major/Colonel Kira Nerys

Lt. Cmdr. Worf

Cmdr. Chakotay


Alternate reality first officers

Lieutenant George Kirk

Commander Spock

Contents

[edit] List of first officers

[edit] Earth Starfleet

[edit] Federation

  • Commander Chakotay
    • USS Voyager (2371-2378)
  • Lieutenant Commander Data
    • USS Enterprise (NCC-1701-D) (2369)
  • Lieutenant Commander Shelby
    • USS Enterprise (NCC-1701-D) (2367)

[edit] Klingon Empire

  • Commander Kurn
    • USS Enterprise (NCC-1701-D) (2366, part of the Officer Exchange Program)

[edit] Other

[edit] Mirror universe

[edit] Alternate timelines

  • Commander Thelin
    • USS Enterprise (NCC-1701) (2269)
  • Commander Worf
    • USS Enterprise (NCC-1701-D) (2367-2370)
Starfleet ranks and titles
Enlisted personnel Officer Candidates
CRM3 CRM2 CRM1 PO3 PO2 PO1 CPO SCPO MCPO CDT MID MID1C
Commissioned officers Flag officers
ENS LT JG LT LT CMDR CMDR CAPT FCAPT CDORE RADM VADM ADM FADM
Crew Positions Officer Positions Flag Positions
CREW TECH YMN CHF TCO SO 3OFF 2OFF 1OFF CO DD PM CinC

[edit] Apocrypha

[edit] External link

Retrieved from "http://memory-alpha.org/en/wiki/First_officer"
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