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{{at|xx}}
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{{multiple}}
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{{disambiguation|a business chief executive officer|CEO|rd=Executive officer}}
⚫
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:
  
  +
{{aquote|Captain, as your exec, it's my duty to point out alternatives.|Will Decker''' to James T. Kirk'''<nowiki/>|2270s|1}}
   
  +
{{aquote|Commander, we don't have to like each other to work well together. As a matter of fact, I'd like you to continue to keep me on my toes.''"<br />"''Some might define that as the role of a first officer.|[[William T. Riker]]''' and '''[[Elizabeth Shelby]]|2367|The Best of Both Worlds, Part II}}
−
* Serve as the principal adviser to the captain
  
  ⚫
Aboard a [[starship]] the '''first officer''' or '''executive officer''' (or '''XO''') was the '''second-in-command''', just below the [[captain]].
−
* Implementing the captain's orders
  
⚫
* Preparing and issuing duty rosters ({{VOY|The Gift|Tsunkatse|Endgame}})
  
−
* Commanding the vessel in the event of the captain's absence, incapacitation or death ({{VOY|Night|Before and After}}; {{TNG|The Battle|Tapestry}})
  
⚫
* Working with the [[chief medical officer]] or [[counselor]] on [[crew evaluation]]s ({{TNG|Lower Decks}})
  
−
 
⚫
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''').
  
   
  +
== Duties ==
⚫
In Starfleet's early period of existence, the first officer would accompany the captain on [[landing party|landing parties]], depending on the situation. By the [[24th century]], however, it was the first officer who usually led [[away team]]s while the captain remained on the ship.
  
  ⚫
In [[Starfleet]], the position was usually held by an [[officer]] with the [[rank]] of [[commander]] or [[lieutenant commander]], but exceptions do exist, such as with [[Sylvia Tilly]] in the [[32nd century]].
  +
  ⚫
In Starfleet's early period of [[existence]], the first officer would accompany the captain on [[landing party|landing parties]], depending on the situation. By the [[24th century]], however, it was the first officer who usually led [[away team]]s while the captain remained on the ship.
   
 
In the 22nd and 23rd centuries, the first officer served as a department head first and the executive officer second (similar to the [[second officer]] and [[third 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.
  
In the 22nd and 23rd centuries, the first officer served as a department head first and the executive officer second (similar to the [[second officer]] and [[third 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.
   
  +
Noted functions of the first officer aboard a [[Federation]] starship were:
−
By the 24th century it was not uncommon for the first officer, as adviser, to give orders to the crew even with the captain on the bridge. While the captain had the authority to countermand such orders, the captain usually supported the first officer's decisions.
  
  +
* The primary role of the second-in-command was to carry out the decisions of the Captain. ({{TNG|Gambit, Part II}})
  +
** Obey and implement the captain's orders. ({{TOS|The Enterprise Incident}}; {{TNG|Gambit, Part II}}; {{DS9|Paradise Lost}})
  +
** To be informed, insomuch as to know everything the captain knew. ({{TNG|Code of Honor}}) As well as had full [[security clearance]] to possess such knowledge. ({{TNG|Samaritan Snare}})
  +
** Attending important meetings and briefings with the captain. ({{film|12}})
  +
** Take command of the vessel in the event of the captain's absence, incapacitation or death. ({{TOS|The Squire of Gothos|Journey to Babel}}; {{VOY|Before and After|Scorpion, Part II|Night|Tsunkatse|Unimatrix Zero}}, {{e|Unimatrix Zero, Part II}}; {{TNG|The Battle|The Best of Both Worlds|The Best of Both Worlds, Part II|Tapestry|Gambit, Part I}})
  +
* To point out any actions that may be mistakes by a commanding officer. ({{Film|1}}, {{TNG|Chain Of Command, Part II|The Pegasus}}; {{DS9|Paradise Lost|To the Death}} {{VOY|Alliances|Scorpion|Year of Hell|The Omega Directive|Night}}, {{e|Infinite Regress}}, {{e|Equinox, Part II}}, {{e|Unimatrix Zero}}, {{e|Shattered}})
  +
* To safeguard the lives of the ship's crew, particularly the captain. ({{TNG|In Theory}} {{VOY|Shattered}})
  +
* Act as the [[personnel director|officer in charge of personnel]]. ({{VOY|Day of Honor}})
  ⚫
** Preparing and issuing [[duty roster]]s. ({{VOY|The Gift|Tsunkatse|Endgame}})
  +
*** Following the [[promotion]] of [[Acting Ensign]] [[Wesley Crusher]] in [[2364]], Captain [[Jean-Luc Picard]] told Crusher, that while he waited for his acceptance into [[Starfleet Academy]], "''you will learn this ship&ndash;every operation, every function,''" and that Commander [[William Riker]] would prepare a [[duty schedule]] for him, "''heavy on study''". ({{TNG|Where No One Has Gone Before}})
  +
*** According to Captain [[Kathryn Janeway]], if a member of the crew needs to leave their post, they are required to inform the first officer. ({{VOY|Human Error}})
  +
** Coordinate personnel transfers between [[department]]s. ({{TNG|Lessons}})
  ⚫
** Working with the [[chief medical officer]] or [[counselor]] on [[crew evaluation]]s, ({{TNG|Man Of The People|Lower Decks}}) as well as crew discipline. ({{VOY|Lifesigns}})
  +
** Supervise subordinates.
  +
*** When [[Hoshi Sato]] requested the help of [[T'Pol]], Sato expressed her frustration with how frequently T'Pol was looking over her shoulder, double-checking her [[log entry|log entries]], and [[translation]]s. While T'Pol felt she was just doing her job, and explained how she held Sato to a high standard because "''I know you're capable of achieving it.''" ({{ENT|Vox Sola}})
  +
* Managing the ship's resources, including systems allocation. ({{TNG|Lessons}})
   
  +
Aboard a Klingon warship, the first officer served the Captain, but stood for the crew. They also reviewed and kept the ship's record of battle. ({{DS9|Soldiers of the Empire}})
−
Some noted first officers in Starfleet history were:
  
   
  ⚫
== Noted first officers ==
−
* Subcommander/Commander [[T'Pol]] of {{EnterpriseNX}}
  
  +
=== 22nd century first officers ===
⚫
* Lieutenant Commander (later Commander, and later Captain) [[Spock]] of the {{USS|Enterprise|NCC-1701}} and {{USS|Enterprise|NCC-1701-A|-A}}
  
  ⚫
<gallery caption="22nd century First officers">
−
* Commander [[William T. Riker]] of the {{USS|Enterprise|NCC-1701-D|-D}} and the {{USS|Enterprise|NCC-1701-E|-E}}
  
  +
File:T'Pol, early 2154.jpg|[[Commander]] T'Pol ({{EnterpriseNX}})
⚫
* [[Major]] (later [[Colonel]]) [[Kira Nerys]] of [[Deep Space 9]]
  
  +
</gallery>
−
* Lieutenant Commander [[Worf]] of the {{USS|Defiant|2370}}
  
  +
=== 23rd century first officers ===
⚫
* Commander [[Chakotay]] of the {{USS|Voyager}}
  
  +
<gallery caption="23rd century First officers">
  ⚫
File:George Kirk.jpg|[[Lieutenant]] [[George Kirk]] ({{USS|Kelvin}})
  +
File:Una Chin-Riley, 2253.jpg|Cmdr. [[Una Chin-Riley]] ({{USS|Enterprise|NCC-1701}})
  +
File:Michael Burnham.jpg|Cmdr. [[Michael Burnham]] ({{USS|Discovery}} and {{USS|Shenzhou}})
  +
File:Saru, 2257.jpg|Cmdr. [[Saru]] (USS ''Discovery'')
  +
File:James T. Kirk, 2259.jpg|[[Lieutenant]] [[James T. Kirk]] ({{USS|Farragut|NCC-1647}})
  +
File:Tom Nellis.jpg|Lieutenant [[Tom Nellis]] (''[[Antares]]'')
  +
File:Spock, 2268.jpg|Cmdr. / [[Captain|Capt]]. [[Spock]] (USS ''Enterprise'' and {{USS|Enterprise|NCC-1701-A|-A}})
  +
File:Will Decker.jpg|Cmdr. [[Will Decker]] (USS ''Enterprise'')
  +
File:Pavel Chekov, 2285.jpg|Cmdr. [[Pavel Chekov]] ({{USS|Reliant|NCC-1864}})
  +
</gallery>
   
  +
=== 24th century first officers ===
−
''The Starfleet of the [[alternate reality]] established in [[2233]] by the temporal incursion of the [[Romulan]] [[Nero]] had the following noteworthy first officers:''
  
  +
<gallery caption="24th century First officers">
⚫
* ''[[Lieutenant Commander]] [[George Kirk]] of the {{USS|Kelvin}}''
  
  ⚫
File:William Riker, 2366.jpg|Commander William T. Riker ({{USS|Hood|Excelsior class}}, {{IKS|Pagh}}, {{USS|Enterprise|NCC-1701-D|-D}} and {{USS|Enterprise|NCC-1701-E|-E}})
−
* ''{{alt|James T. Kirk}}, first officer of {{USS|Enterprise|alternate reality}} (promoted by Captain {{alt|Christopher Pike}})''
  
  ⚫
File:Kira Nerys, 2375.jpg|[[Colonel]] [[Kira Nerys]] ([[Deep Space 9]] and {{USS|Defiant|2370}})
−
* ''Commander {{alt|Spock}} of the USS ''Enterprise
  
  +
File:Worf, 2375.jpg|Lt. Cmdr. [[Worf]] (USS ''Defiant'' and {{USS|Defiant|2375}})
  +
File:Benjamin Sisko, 2366.jpg|Lt. Cmdr. [[Benjamin Sisko]] ({{USS|Okinawa}} and {{USS|Saratoga|NCC-31911}})
  +
File:Elizabeth Shelby, 2367.jpg|Cmdr. [[Elizabeth Shelby]] (USS ''Enterprise''-D)
  ⚫
File:Christopher Hobson.jpg|Lieutenant Commander [[Christopher Hobson]] ({{USS|Sutherland|NCC-72015}})
  +
File:Cavit.jpg|Lt. Cmdr. [[Cavit]] ({{USS|Voyager}})
  ⚫
File:Chakotay, 2377.jpg|Commander [[Chakotay]] (USS ''Voyager'')
  +
File:Jack Ransom.png|Commander [[Jack Ransom]] ({{USS|Cerritos}})
  +
File:Adreek-Hu.jpg|Commander [[Adreek-Hu]] ({{USS|Protostar}})
  +
File:Tysess.jpg|Commander [[Tysess]] ({{USS|Dauntless|NCC-80816}})
  +
File:Cristóbal Rios, 2390.jpg|[[Cristóbal Rios]] ({{USS|Ibn Majid}})
  +
</gallery>
   
  +
=== 25th century first officers ===
⚫
<gallery caption="First officers">
  
  +
<gallery caption="25th century First officers">
−
File:TPol2153.jpg|[[Subcommander|Subcmdr.]]/[[Commander|Cmdr.]] T'Pol
  
−
File:Spock, 2268.jpg|[[Commander|Cmdr.]]/[[Captain|Cpt]] Spock
 +
File:Annika Hansen, 2401.jpg|Commander [[Annika Hansen]] ({{USS|Titan|NCC-80102-A|-A}})
  +
File:Moshe.jpg|Commander [[Moshe]] ({{USS|Stargazer|NCC-82893}})
−
File:William Riker, 2366.jpg|[[Commander|Cmdr.]] William T. Riker
  
  +
File:Raffaela Musiker, 2402.png|Commander [[Raffaela Musiker]] ({{USS|Enterprise|NCC-1701-G|-G}})
−
File:KiraNerys2375.jpg|[[Major]]/[[Colonel]] Kira Nerys
  
−
File:Worf2375.jpg|[[Lieutenant Commander|Lt. Cmdr.]] Worf
  
−
File:Chakotay, 2377.jpg|[[Commander|Cmdr.]] Chakotay
 
 
</gallery>
  
</gallery>
  +
  +
=== 29th century first officers ===
  +
<gallery caption="29th century First officers">
  +
File:Ducane.jpg|Lieutenant [[Ducane]] ({{USS|Relativity}})
  +
</gallery>
  +
  +
=== 32nd century first officers ===
  +
<gallery caption="32nd century First officers">
  +
File:Patrick Fickett.png|Commander [[Patrick Fickett]] ({{USS|Credence}})
  +
File:Michael Burnham, Commander, 3189.png|Commander Michael Burnham (USS ''Discovery'')
  +
File:Saru, 3190.jpg|Captain [[Saru]] (USS ''Discovery'')
  +
File:Commander Rayner.png|Commander [[Rayner]] (USS ''Discovery'')
  +
</gallery>
  +
  +
=== Alternate reality ===
 
<gallery caption="Alternate reality first officers">
  
<gallery caption="Alternate reality first officers">
−
File:George Kirk (alternate).jpg|''[[Lieutenant Commander]] [[George Kirk]]''
 +
File:George Kirk at post.jpg|''Lieutenant George Kirk''
−
File:Spock (alternate reality).jpg|''[[Commander]] {{alt|Spock}}''
 +
File:Spock (alternate reality).jpg|''Commander {{alt|Spock}}''
  +
File:Kirk first officer.jpg|''Commander {{alt|James T. Kirk}}''
 
</gallery>
  
</gallery>
⚫
== List of first officers ==
  
⚫
=== Earth Starfleet ===
  
−
*[[Subcommander]]/Commander T'Pol
  
−
**{{EnterpriseNX}} ([[2151]]-[[2161]])
  
   
−
=== Federation ===
 +
=== Mirror universe ===
  +
<gallery caption="Mirror universe first officers">
  +
File:Jonathan Archer (mirror).jpg|''Commander Jonathan Archer''
  +
File:Keyla Detmer, mirror.jpg|''Keyla Detmer''
  +
File:Spock (mirror).jpg|''Commander Spock''
  +
</gallery>
  +
  +
== List of first officers ==
  ⚫
=== Starfleet ===
 
*Commander [[Brink]]
  
*Commander [[Brink]]
 
**{{USS|Brattain}} (2367)
  
**{{USS|Brattain}} (2367)
   
 
*Lieutenant [[Maxwell Burke]]
  
*Lieutenant [[Maxwell Burke]]
−
**{{USS|Equinox}} ([[2370]]-[[2376]])
 +
**{{USS|Equinox}} ([[2370]]&ndash;[[2376]])
   
  +
*Ensign [[Sylvia Tilly]]
−
*Lieutenant Commander [[Cavit]]
  
−
**{{USS|Voyager}} (2371)
 +
**{{USS|Discovery}} (3189)
−  
⚫
*Commander Chakotay
 
−
**USS ''Voyager'' (2371-[[2378]])
  
−  
−
*Commander [[Pavel Chekov]]
  
⚫
**{{USS|Reliant}} ([[2285]])
  
   
 
*Lieutenant Commander [[Data]]
 
*Lieutenant Commander [[Data]]
 
**USS ''Enterprise''-D ([[2369]])
 
**USS ''Enterprise''-D ([[2369]])
−  
−
*Commander [[Willard Decker]]
  
⚫
**USS ''Enterprise'' ([[2270s]])
  
−  
−
*Lieutenant [[Ducane]]
  
−
**{{USS|Relativity}} ([[29th century]])
  
   
 
*Commander [[Flaherty]]
  
*Commander [[Flaherty]]
 
**{{USS|Aries}} ([[2365]])
  
**{{USS|Aries}} ([[2365]])
−  
−
*Commander [[Steven Gerber|Steve Gerber]]
  
⚫
**{{USS|Yamato}} (2365)
  
−  
⚫
*Lieutenant Commander [[Christopher Hobson]]
  
−
**{{USS|Sutherland}} ([[2368]])
  
−  
−
*Commander [[Martin Madden]]
  
⚫
**USS ''Enterprise''-E ([[2379]])
  
   
 
*Commander [[Steven Mullen]]
  
*Commander [[Steven Mullen]]
 
**{{USS|Essex}} ([[2167]])
  
**{{USS|Essex}} ([[2167]])
   
  +
*[[Christopher Pike]]
−
*Lieutenant [[Tom Nellis]]
  
−
**''[[Antares]]'' ([[2266]])
 +
**USS ''Enterprise'' ([[2240s]]&ndash;[[2250]])
−  
−
*[[Lieutenant]] "[[Number One]]"
  
−
**USS ''Enterprise'' ([[2254]])
  
−  
−
*Major/[[Colonel]] Kira Nerys ([[Bajoran Militia]] [[liaison officer]])
  
−
**[[Deep Space 9]] ([[2369]]-[[2375]])
  
−  
−
*Lieutenant Commander/Commander William Riker
 
−
**{{USS|Hood|Excelsior class}} ([[2361]]-[[2364]])
  
−
**USS ''Enterprise''-D (2364-[[2371]])
 
−
**{{IKS|Pagh}} ([[2365]], part of the [[Officer Exchange Program]])
  
⚫
**USS ''Enterprise''-E ([[2372]]-[[2379]])
  
−  
−
*[[Matthew Ryan]]
  
−
**{{ECS|Fortunate}} ([[2151]])
  
−  
−
*Lieutenant [[Saavik]]
  
⚫
** USS 'Enterprise''
  
−
{{Bginfo|Saavik is never named as a First Officer, however the ''Enterprise'' was being used at that time to train cadets and give junior officers command experience, in particular, Saavik. As she was given command several times during the training, it can be assumed that, as a trainee, Saavik was the First Officer.}}
  
   
−
*Lieutenant Commander/Commander [[Shelby]]
 
−
**USS ''Enterprise''-D (2367)
 
   
  +
;Unnamed:
−
*Lieutenant Commander [[Benjamin Sisko]]
  
  +
* [[Pegasus first officer 001|''Pegasus'' first officer]]
−
**{{USS|Okinawa}}
  
−
**{{USS|Saratoga|NCC-31911}} ([[2367]])
 +
** {{USS|Pegasus}}
   
  +
* [[Phoenix first officer 001|''Phoenix'' first offcier]]
−
*[[Snodgrass]]
  
−
**{{SS|Mariposa}} ([[2123]])
 +
** {{USS|Phoenix}}
  +
{{Bginfo|A deleted scene from {{film|10}} introduced Commander [[Martin Madden]] as the new first officer of the USS ''Enterprise''-E}}
−  
−
*Lieutenant Commander/Commander/Captain Spock
  
−
**USS ''Enterprise'' ([[2266]]-[[2270]])
  
−
**USS ''Enterprise''-A ([[2286]]-[[2293]])
  
−  
−
*Lieutenant/Lieutenant Commander Worf
  
−
**USS ''Enterprise''-D (2370)
 
−
**{{USS|Defiant|2370}} (2372-[[2375]])
  
⚫
**{{USS|Sao Paulo}} (2375)~
  
−
**{{IKS|Rotarran}} (2373-2374)
  
   
 
=== Klingon Empire ===
  
=== Klingon Empire ===
−
*[[Hon'Tihl]]
 +
*[[Hon-Tihl]]
 
**{{IKS|Toh'Kaht}} (2369)
  
**{{IKS|Toh'Kaht}} (2369)
   
Line 137: Line 141:
   
 
*[[Korax]]
  
*[[Korax]]
−
**{{IKS|Gr'oth}} ([[2267]]-2269)
 +
**{{IKS|Gr'oth}} ([[2267]])
  ⚫
**{{IKS|Devisor}} (2269)
   
 
*Commander [[Kurn]]
  
*Commander [[Kurn]]
Line 143: Line 148:
   
 
*Lieutenant Commander Worf
  
*Lieutenant Commander Worf
−
**{{IKS|Rotarran}} (2373-2374)
 +
**{{IKS|Rotarran}} (2373 &ndash; 2375)
  ⚫
**{{IKS|Ch'Tang}} (2375)
   
 
=== Other ===
  
=== Other ===
−
*[[Ferengi]] - [[Kazago]]
 +
*[[Human]] &ndash; [[Matthew Ryan]]
  +
**{{ECS|Fortunate}} ([[2151]], [[demote]]d in [[August]] to [[able crewman]])
  +
  +
*[[Ferengi]] &ndash; [[Kazago]]
 
**[[Bok's Marauder]] (2364)
  
**[[Bok's Marauder]] (2364)
   
−
*[[Tellarite]] - [[Gaavrin]]
 +
*[[Tellarite]] &ndash; [[Gaavrin]]
 
**''[[Tezra]]'' (early [[22nd century]])
  
**''[[Tezra]]'' (early [[22nd century]])
   
−
*[[Tygarian]] - [[Romah Doek]]
 +
*[[Tygarian]] &ndash; [[Romah Doek]]
 
** ''[[Nanut]]''
  
** ''[[Nanut]]''
  +
  +
*[[Romulan]] &ndash; {{dis|Tal|Sub-Commander}}
  +
  +
* Romulan &ndash; [[Ayel]]
  +
** ''[[Narada]]''
   
 
=== Mirror universe ===
  
=== Mirror universe ===
 
*Commander {{mu|Jonathan Archer}}
  
*Commander {{mu|Jonathan Archer}}
−
**{{ISS|Enterprise|NX-01}} ([[2165]])
 +
**{{ISS|Enterprise|NX-01}} ([[2155]])
   
 
*Lieutenant Commander {{mu|T'Pol}}
  
*Lieutenant Commander {{mu|T'Pol}}
 
**{{USS|Defiant|NCC-1764}} (2155)
  
**{{USS|Defiant|NCC-1764}} (2155)
  +
  +
*{{mu|Keyla Detmer}}
  +
**{{ISS|Shenzhou}} (2257)
   
 
*Commander {{mu|Spock}}
  
*Commander {{mu|Spock}}
Line 166: Line 183:
   
 
=== Alternate timelines ===
  
=== Alternate timelines ===
−
*Lieutenant [[Sato]]
 +
*Lieutenant [[Hoshi Sato#Alternate timelines|Sato]]
 
**Enterprise NX-01 (2165)
  
**Enterprise NX-01 (2165)
   
Line 172: Line 189:
 
**USS ''Enterprise'' (2269)
  
**USS ''Enterprise'' (2269)
   
−
*Commander [[Worf]]
 +
*Commander [[Worf#Alternate realities and timelines|Worf]]
−
**USS ''Enterprise''-D (2367-2370)
+
**USS ''Enterprise''-D (2367 &ndash; 2370)
   
 
*Commander {{alt|Spock}}
  
*Commander {{alt|Spock}}
−
**USS ''Enterprise'' (2258)
 +
**{{USS|Enterprise|NCC-1701 alternate reality}} (2258 &ndash; 2263)
  ⚫
**{{USS|Franklin}} (2263)
−  
  +
**{{USS|Enterprise|NCC-1701-A alternate reality|-A}} ([[2260s]])
⚫
*Cadet {{alt|James T. Kirk}}
  
−
**USS ''Enterprise'' (2258)
  
   
  ⚫
*Commander {{alt|James T. Kirk}}
−
*[[Ayel]]
  
  ⚫
**USS ''Enterprise'' (2258, 2259)
−
**The [[Romulan]] [[mining vessel]] ''[[Narada]]''
  
−  
−
{{ranks}}
  
   
 
== Appendices ==
  
== Appendices ==
 
=== Apocrypha ===
  
=== Apocrypha ===
  +
*Acting First officer {{Mb|Yoshi Ohara}}
−
*Commander Worf
  
  ⚫
**{{USS|Enterprise|NCC-1701}} (''[[Desperate Hours]]'')
−
**USS ''Enterprise''-E (2380)
  
  ⚫
*Commander Jon Cooper
  +
**[[Starbase 47]] (''[[Star Trek: Vanguard]]'')
   
 
*Commander [[Sonya Gomez]]
  
*Commander [[Sonya Gomez]]
−
**USS ''Da Vinci'' (''[[Star Trek: Starfleet Corps of Engineers]]'')
 +
**USS ''da Vinci'' (''[[Star Trek: Starfleet Corps of Engineers]]'')
   
−
*Commander Elias Vaughn
 +
*Commander [[Elizabeth Shelby]]
  ⚫
**{{USS|Excalibur|NCC-26517}} (''[[Star Trek: New Frontier]]'')
−
**Deep Space 9 ([[Star Trek: Deep Space Nine (Pocket)|''Star Trek: Deep Space Nine'' (Pocket)]])
  
  +
  +
*Lieutenant Commander [[Demora Sulu]] ([[2301]] &ndash; [[2311]])
  +
**{{USS|Enterprise|NCC-1701-B|-B}} (''[[Star Trek: The Lost Era]]'')
   
 
* Commander Christine Vale
 
* Commander Christine Vale
−
**{{USS|Titan}} (''[[Star Trek: Titan]]'')
 +
**{{USS|Titan|NCC-80102}} (''[[Star Trek: Titan]]'')
   
−
*Commander Jon Cooper
 +
*Commander Elias Vaughn (2376 &ndash; 2379)
−
**[[Starbase 47]] (''[[Star Trek: Vanguard]]'')
 +
**Deep Space 9 ([[Star Trek: Deep Space Nine (Pocket)|''Star Trek: Deep Space Nine'' (Pocket)]])
  ⚫
**USS ''Defiant''
   
−
*Commander [[Shelby]]
 +
*Commander Worf
  ⚫
**USS ''Enterprise''-E (2380)
⚫
**{{USS|Excalibur|NCC-26517}} (''[[Star Trek: New Frontier]]'')
  
   
−
=== External link ===
 +
===External link===
  +
*{{mbeta|First officer}}
−
* {{NCwiki}}
  
  +
*{{Wikipedia|First officer}}
−  
  +
*{{Wikipedia|Executive officer}}
⚫
[[Category:Titles]]
  
  +
*{{Wikipedia|Second-in-command}}
   
  +
[[bg:Първи офицер]]
 
[[de:Erster Offizier]]
  
[[de:Erster Offizier]]
 
[[es:Primer Oficial]]
  
[[es:Primer Oficial]]
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[[ru:Первый помощник]]
  
[[ru:Первый помощник]]
 
[[sv:Försteofficer]]
  
[[sv:Försteofficer]]
  +
[[Category:Military ranks]]
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[[Category:Titles]]

Latest revision as of 07:30, 15 April 2024

Multiple realities
(covers information from several alternate timelines)
Executive officer redirects here; for a business chief executive officer, please see CEO.
"Captain, as your exec, it's my duty to point out alternatives."
– Will Decker to James T. Kirk, 2270s (Star Trek: The Motion Picture)
"Commander, we don't have to like each other to work well together. As a matter of fact, I'd like you to continue to keep me on my toes."
"Some might define that as the role of a first officer."

Aboard a starship the first officer or executive officer (or XO) was the second-in-command, just below the captain.

Duties

In Starfleet, the position was usually held by an officer with the rank of commander or lieutenant commander, but exceptions do exist, such as with Sylvia Tilly in the 32nd century.

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 served as a department head first and the executive officer second (similar to the second officer and third 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.

Noted functions of the first officer aboard a Federation starship were:

Aboard a Klingon warship, the first officer served the Captain, but stood for the crew. They also reviewed and kept the ship's record of battle. (DS9: "Soldiers of the Empire")

Noted first officers

22nd century first officers

23rd century first officers

24th century first officers

25th century first officers

29th century first officers

32nd century first officers

Alternate reality

Mirror universe

List of first officers

Starfleet

  • Lieutenant Commander Data
    • USS Enterprise-D (2369)


Unnamed
A deleted scene from Star Trek Nemesis introduced Commander Martin Madden as the new first officer of the USS Enterprise-E

Klingon Empire

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

Other

Mirror universe

Alternate timelines

  • Lieutenant Sato
    • Enterprise NX-01 (2165)
  • Commander Thelin
    • USS Enterprise (2269)
  • Commander Worf
    • USS Enterprise-D (2367 – 2370)

Appendices

Apocrypha

  • Commander Worf
    • USS Enterprise-E (2380)

External link

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