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For other uses, see Excalibur.

The USS Excalibur (NCC-26517-A) was a Federation starship, a Galaxy-class explorer in Starfleet service, under the command of Captain Mackenzie Calhoun beginning in the year 2376.

Service history and disposition


The Excalibur's construction started after the second Borg invasion of the Federation using some older systems from previous vessels.

The command crew of the original Excalibur was present when the vessel was commissioned. The Excalibur-A was originally to be under the command of Captain Elizabeth Shelby, but she relinquished command after the dramatic reappearance of the believed-to-be-dead Mackenzie Calhoun, the captain of the previous Excalibur.

Shortly after the vessels dedication, Captains Calhoun and Shelby were married on the bridge of the Excalibur-A in a ceremony presided over by Captain Jean-Luc Picard. (NF - Excalibur novel: Restoration)

The Excalibur-A's first assignment found her in the middle of the Gateways Crisis, and inbetween two warring species, the Markanians and the Aerons. (GAT - Gateways novel: Cold Wars)

Soon after, the Excalibur was sent to investigate unusual energy signatures in Zone 18 Alpha. There, the Excalibur encountered the Beings, who claimed to be ancient Earth gods. The Excalibur’s saucer section was equipped with warp drive and left the system, while the stardrive section battled the Beings and was heavily damaged. The USS Trident arrived in the system just in time to defend the defenseless stardrive section. (NF - Excalibur novel: Being Human)

The Excalibur and the USS Enterprise-E were key to the revelation of Selelvian manipulation of the Federation Council. (NF novels: Gods Above, Stone and Anvil)


The Excalibur was present when the extra-dimensional beings known as the Teuthis attempted to incite civil war between the two major powers of the New Thallonian Protectorate.

The Excalibur briefly went missing in the enclosed, gelatinous realm of the Teuthis and the Bolgar, but emerged soon after. (NF novels: After the Fall, Missing in Action)


The Excalibur was one of the ships to respond to the Borg invasion of the Alpha Quadrant. Leading a Task Group of eight ships, Captain Calhoun joined up with the USS Enterprise-E and deferred command to that starship. It joined the battle near Earth. (TNG novel: Before Dishonor)


During the invasion of the Borg Collective in 2381, Starbase 343 was one of five simultaneous attacks along with bases 157 and 234 and the planets of Khitomer and Korvat. The Excalibur protected the base during the battle, and attempted to reproduce the phase inverter technique the USS Ranger used, but the Borg had already adapted; instead, they used the same technology to augment torpedoes and destroyed the cube. The Excalibur signaled an all-clear, but was heavily crippled and unable to rendezvous with the Enterprise at the Azure Nebula. (ST - Destiny novel: Gods of Night) After the engagement, Starfleet Command had evidence indicating that the Borg had adapted to this attack, and its use was therefore dismissed by a think tank that included Seven of Nine. (ST - Destiny novel: Mere Mortals)

Crew manifest

See USS Excalibur (NCC-26517-A) personnel.

Command division

Operations division



Science and medicine




Ships named Excalibur
Federation Starfleet
(primary universe)
USS Excalibur (2240s-era starship)USS Excalibur (NCC-1664, Constitution-class)USS Excalibur II (Constitution-class)USS Excalibur (Miranda-class)USS Excalibur (NCC-2004, Excelsior-class)USS Excalibur (NCC-26517, Ambassador-/Yamaguchi-class)USS Excalibur (NCC-26517-A, Galaxy-class)USS Excalibur (NCC-94547, Excalibur-class)USS Excalibur (NCC-1664-M, Kirk-class)see also: Excalibur-class Federation icon image. {{{2}}} icon image.
Federation Starfleet
(Kelvin timeline)
USS Excalibur (Arbiter-class)USS Excalibur (Constitution-class)USS Excalibur (Defender-class)USS Excalibur (Guardian-class)USS Excalibur (Interceptor-class) {{{2}}} icon image. {{{2}}} icon image.
United Earth Starfleet Excalibur (NX-03, NX-class) {{{2}}} icon image. {{{2}}} icon image. Terran Empire, Starfleet
(mirror universe)
ISS Excalibur (NCC-1664, Constitution-class)ISS Excalibur (NCC-94547, Excalibur-class) {{{2}}} icon image. {{{2}}} icon image.
Khanate of Earth, Earthfleet
(alternate timeline)
Excalibur (Earthfleet starship) {{{2}}} icon image. Galactic Commonwealth, Starfleet
(mirror universe)
free starship Excalibur (Mogai-class) {{{2}}} icon image.
Galaxy-class class XVI explorer/exploration cruiser starships
Federation, Starfleet Standard configuration AdelaideAgrippaAlleghenyAndromedaArgoArgonautAsgardAsigaraBermudaBerryBolivarBolzanoBonhomme RichardBlakeBreedloveC. LewisCanariasCanterburyCerveraChallengerCheyenneCitadelColumbusConstellationConstitutionDauntlessDauntless IIDe RuyterDefianceDominanceEagleEl DoradoEndeavorEnterprise-DEssexExcalibur-AExeterFarragutFormidableFrontierGalaxyGaliciaGeronimoGloucesterGoodmanHedderjinHoodHornetHurutakaIdahoIntrepidJefferiesJubeiKinugasaKongoKriegerLafayetteLazarevLexingtonLhasaMadisonMagellanMakarovMalevolentMarquetteMerrimacMolotovMonitorMukaikuboMurmanskMusashiNavarraNing HaiOdysseusOdysseyOntarioOraidheOregonPequodPerseusPersiaPhloxRenownRepublicReverantReverentRobinsonRonald D. MooreRylanderSalemSan FranciscoSaratogaScimitarSequoiaSorakSwiftsureSumatraTaylorTikumaToriTridentTriesteTrinculoTyokaiUlyssesValhallaValiantVentureVictoryVindictiveWaspWichitaWorcesterYamato (I)Yamato (II)YorktownZhurkovunnamed Galaxy-class starships Federation icon image. Starfleet icon image.
Variant configurations Andromeda-subclass: AndromedaBirminghamCelestial-subclass: CelestialEnvoy-subclass: EnvoyGalaxy X-subclassMonarch-subclass: MonarchSamson (variant) • Ross-subclass: RossVanguardYi Sun-SinVenture-subclass: Samson (variant) • Venture-AVenture-BYamato-subclass: Madrid
Terran Empire, Starfleet
(mirror universes)
Enterprise-DGalaxyVenture-subclass: Galaxy Terran Empire icon image. Imperial Starfleet icon image.
Borg Collective
(mirror universe)
Assimilation Target Prime Borg Collective icon image.

Appearances and references