Memory Beta, non-canon Star Trek Wiki

NX class

45,593pages on
this wiki
This article or section needs attention
This page or section has been identified as needing attention. Please visit the article's talk page to see what needs fixing and feel free to edit this page to assist with this task..
For the registry prefix used by Starfleet, see NX.

The NX-class was a type of Explorer starship in the United Earth Starfleet in service during the mid-22nd century. The NX-class was commissioned as an exploratory vessel as a medium for the new warp 5 engine that would form the basis of Humans first reach into the galaxy. (Star Trek: Enterprise)

The first six ships of the class were named after the NASA space shuttle orbiters of the late 20th century. (ENT - The Romulan War novel: Beneath the Raptor's Wing)


Enterprise was the first NX-class starship built, registry NX-01. The ship was launched ahead of schedule in 2151, under the command of Captain Jonathan Archer, to transport the Klingon courier Klaang back to Qo'noS. Due to the early launch of the Enterprise, several systems—most notably the starship weapon systems—had not yet been completed. These weapon systems were completed in the field at a later date. (ENT episodes: "Broken Bow", "Fight or Flight", "Silent Enemy")

With a series of successful early missions, Starfleet decided to proceed with building further NX class ships. By 2151, three more NX class ships were in the early design stages. Construction of the unnamed NX-02 had begun by the time the Xindi attacked Earth in 2153. The ship, later named Columbia, was completed in November of 2154 and launched under the command of Captain Erika Hernandez. (ENT episodes: "Fortunate Son", "The Expanse", "Home", "Affliction")

NX Project patch

NX Project assignment patch.

Sometime between the Enterprise's return to Earth after the mission to prevent the Xindi from destroying Earth and the formation of the United Federation of Planets, the Enterprise and her sister ships underwent a major overhaul that took 180 days. (ST calendar: Ships of the Line 2011)

In August 2155, the Challenger and Discovery were completed and commissioned. Several months later, the Atlantis and Endeavour entered service. Between mid-2155 and mid-2156, the Columbia, Challenger, Discovery, and Atlantis were destroyed or lost as a result of Romulan attacks. The Endeavour, equipped with countermeasures to the Romulan arrenhe'hwiua telecapture technology, battled with the Romulans at Altair VI. (ENT - The Romulan War novel: Beneath the Raptor's Wing)

NX-class production would later be restarted by 2159. Captain Picard remembered 15 or 16 ships of this class having been built. Some of them would be Intrepid (NX-07), Avenger (NX-09), and Currie. (ST video game: Legacy; TNG novel: Indistinguishable from Magic)


NX-class internal cutaway

NX-class internal schematics

When first launched, the NX-class was meagerly equipped with plasma cannons and spatial torpedoes. Instead of a tractor beam, it used special grappling cables. The first of the NX-class, the Enterprise had three phase cannons in storage, but it wasn't until midway through their first year that they were equipped. During the Xindi superweapon crisis, the Enterprise got retrofitted with twelve phase cannons and the newly developed Photonic torpedoes. With these armanents, as well as improved hull plating, it was able to defeat three Klingon birds-of-prey. (ENT episode: "The Expanse")

After saving Earth from the Xindi superweapon, the NX-class received another upgrade including an upgraded navigational deflector, an improved computer interface, pulsed phase cannons, dorsal and ventral torpedo launchers, and polarised hull plating that had 12 percent greater performance than previous versions. (ENT episode: "Home")

In 2159, these vessels were equipped with phase banks and four torpedo launcher banks. (ST video game: Legacy)

Mirror universeEdit


An NX class cruiser, the ISS Enterprise in the mirror universe

In the mirror universe, these were known as NX class battleships. There were at least 9 ships in service by 2155. Most of these were refitted with advanced weapons from the USS Defiant in the same year. (ENT novel: Age of the Empress)

Known vesselsEdit

Mirror universe vesselsEdit



Starship classes of the Earth-Romulan War
United Earth, Starfleet ArrowAssistCavalryChristopherCosmosDaedalusDiscoveryDoppler (scout)EdisonGalliantHopkinsHorizonIntrepid (22nd century)Liberty (picket cruiser)LongMarshallMercury (scout)MessierMinutemanNXPoseidonStriderVerneVanguard (starship)YorktownZeus Seal of United Earth United Earth Starfleet Emblem

ACentaurian insignia AndorianEmblem Tellarite insignia VulcanIDIC

Coalition of Planets allies Alpha Centauri Concordium of Planets: DjartannaZoenamy Andorian Empire: KumariTaholsinTanathooefThofsin
United Planets of Tellar: DegbaxisG'buqoffPhinda Confederacy of Vulcan: D'KyrSuurokToj Lol
Romulan Star Empire, Imperial Fleet 22nd century bird-of-prey2150s bird-of-preylate-2150s bird-of-preyAlocalaBattlehawkHunterKlivai Vang'radaiMorlasam Cl'vangasRe'ravsamSkyhawkStelai'delethamS'ten TalasamSwarmSwiftwingTakaanT'LissVas'maklaramVas'rosvlaiVastagor VastarumVastari Sanalam RomulanEmblem
Starship classes of Earth
ArrowAssistCavalryChristopherCosmosDY-100DY-500DY-700DY-1100-classDaedalusDiscoveryDoppler (scout)EdisonGalliantHopkinsHorizonIntrepid (Earth)J (freighter)LongMarshallMercuryMessierMinutemanNXPoseidonStriderVanguard (starship)VerneY (freighter)YorktownZeus Seal of United Earth



No explanation is given for these vessels' sometimes Federation Starfleet-style "USS" name prefix, despite existing years before the inception of the Federation.

The Legacy game software included numerous other names for ships of this class that were not prepared to be used in gameplay, and are hidden in the game's source code, including USS Adams, USS Aurbach, USS Boston, USS Commonwealth, USS Concord, USS Fenway, USS Liberty and USS Paul Revere. Possibly, these vessels were intended for some feature of the game that was not completed. For example, none of these ships are coded with registry number graphics like those the included ships possess.

External linkEdit

Around Wikia's network

Random Wiki