NX

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For the class of starship, please see NX class.
File:NX registry.jpg
The NX registry of the USS Defiant

NX is a two-letter registry number prefix used on starships first used by the United Earth Starfleet for their NX-class starships in the mid-22nd century.[1] After the founding of the Federation in 2161, this prefix was used for experimental and prototype starship designs.[2] Ships that used the NCC and the NX prefix were listed in the Starfleet Registry.[3]

In the mirror universe, this prefix was used by the Terran Empire for their NX-class starships.[4] Two centuries later, this prefix was used by the Terran Resistance Forces for their Defiant-class starship.[5]

NX registries[edit | edit source]

Ship Name Registry Class Dates Reference
none NX-Alpha NX-class prototype 2143 ENT: "First Flight"
none NX-Beta NX-class prototype 2143 ENT: "First Flight"
none NX-Delta NX-class prototype 2144 ENT: "First Flight"
Enterprise NX-01 NX-class 2151-2161 ENT: "Broken Bow"
Columbia NX-02 NX-class 2154 ENT: "The Expanse", ""
unnamed NX-03 NX-class 2151 ENT: "Fortunate Son"
unnamed NX-04 NX-class 2151 ENT: "Fortunate Son"
USS Franklin NX-326 2140s-2160s, 2263 Star Trek Beyond
USS Constellation (NCC-1974) NX-1974 Constellation-class 2293 Star Trek VI: The Undiscovered Country
USS Excelsior NX-2000 Excelsior-class 2285 Star Trek III: The Search for Spock
USS Bradbury NX-72307 Bradbury-class 2366 TNG: "Ménage à Troi"
USS Defiant (2370) NX-74205 Defiant-class 2370-2375 DS9: "The Search, Part I", "The Changing Face of Evil"
USS Defiant (2375) NX-74205[6] Defiant-class 2375 DS9: "The Dogs of War"
USS Prometheus (Prometheus class) NX-59650
NX-74913[7]
Prometheus-class 2374 VOY: "Message in a Bottle"

Alternate registries[edit | edit source]

Ship Name Registry Class Dates Note Reference
USS Dauntless NX-01-A
NX-01A
Dauntless-class 2374 Arturis's disguised vessel VOY: "Hope and Fear"

Mirror universe NX registries[edit | edit source]

Ship Name Registry Class Dates References
ISS Enterprise (NX-01) NX-01 NX-class 2155 ENT: "In a Mirror, Darkly"
ISS Avenger NX-09 NX-class 2155 ENT: "In a Mirror, Darkly, Part II"
ISS Defiant NX-74205 Defiant-class 2372-2375 DS9: "Shattered Mirror", "The Emperor's New Cloak"

Appendices[edit | edit source]

Apocrypha[edit | edit source]

Other NX ships listed in literature include:

References[edit | edit source]

  1. ^ ENT: "Broken Bow", "Fortunate Son"
  2. ^ Star Trek III: The Search for Spock
  3. ^ TOS: "The Ultimate Computer"
  4. ^ ENT: "In a Mirror, Darkly"
  5. ^ DS9: "Shattered Mirror"
  6. ^ The USS Sao Paulo had the registry NCC-75633 before it was the USS Defiant.
  7. ^ The hull had the first number, the dedication plaque and internal displays the other

External links[edit | edit source]