Memory Beta, non-canon Star Trek Wiki

A friendly reminder regarding spoilers! At present the expanded Trek universe is in a period of major upheaval with the finale of Year Five, the Coda miniseries and the continuations of Discovery, Picard and Lower Decks; and the premieres of Prodigy and Strange New Worlds, the advent of new eras in Star Trek Online gaming, as well as other post-55th Anniversary publications. Therefore, please be courteous to other users who may not be aware of current developments by using the {{spoiler}}, {{spoilers}} or {{majorspoiler}} tags when adding new information from sources less than six months old. Also, please do not include details in the summary bar when editing pages and do not anticipate making additions relating to sources not yet in release. 'Thank You


Memory Beta, non-canon Star Trek Wiki
For other uses, see Excalibur.

The USS Excalibur (NCC-26517) was a Federation starship, an Ambassador-class heavy cruiser in service to Starfleet in the 24th century. Excalibur had an illustrious service career. (TNG episode: "Redemption, Part II", Decipher RPG modules: Starfleet Operations Manual, Starships)

The Excalibur's first mention in TNG episode: "The Measure of a Man"'s starship deploy status chart gave it the registry NCC-21534. The novel Foreign Foes gives the registry as NCC-42252.

Service history and disposition


Morgan Korsmo assumed command of Excalibur for the first time in the year 2362. (ST video game: Starship Creator)


Starship deploy status chart listing Excalibur.

The Excalibur, under command of Captain Al Smutko was assigned to Neutral Zone space patrol in sector 130. This information was listed on a starship deploy status report on a viewscreen on Starbase 173. (TNG episode: "The Measure of a Man")


The vessel was captained for several years by Captain Morgen, the hereditary ruler of the planet Daa'V, until Morgen returned home in early 2367 to assume the planetary throne after the death of his father. (TNG novel: Reunion)


In early 2368, while the vessel was in between 'official' captains, Commander William T. Riker briefly commanded the ship during the brief Klingon Civil War. Lieutenant Commander Geordi La Forge served as Riker's first officer. (TNG episode: "Redemption II")

Following the war, command of the Excalibur was given to Captain Morgan Korsmo, following the destruction of his previous vessel, the USS Chekov, by the Borg in late 2367. Lieutenant Commander Elizabeth Shelby, following Korsmo from the Chekov, was assigned to the Excalibur as first officer. (TNG novel: Vendetta; NF short story: "Pain Management")

The ST video game: Starship Creator: Warp depicts Korsmo in command of the Excalibur as early as 2362. This would seem to be a contradiction with Korsmo's command of the Chekov, unless he commanded the Chekov in between two separate assignments to the Excalibur.


In 2369, the Excalibur stopped at Starbase Deep Space 9 before embarking on a diplomatic mission to Vigan Delta V. Later that year, the Excalibur encountered Borg Cube 45208 and a number of Excalibur personnel were assimilated, including Lieutenant Marika Wilkarah, who had served on Excalibur for just over a year. (VOY short story: "Brief Candle"; DS9 novel: Stowaways, NF short story: "Making a Difference")


In 2371, the Excalibur went to Lintar IV to rescue Worf, William T. Riker, Deanna Troi, and Alexander Rozhenko from the Romulan Sela, who was holding them prisoner. (TNG novel: Imzadi II)

Later that year, the Excalibur went to Argelius II to pick up Burgoyne 172, the ship's new assistant Chief Engineer. (NF short story: "Through the Looking Glass")


The Excalibur ferried Colfax to Deep Space 9 in 2372. (DS9 novel: The Heart of the Warrior)


On stardate 50391.5, Captain Korsmo was killed during the Battle of Sector 001 against the Borg. His last order to Commander Shelby was to see to the safety of all hands. (NF short story: "Making a Difference")

A new frontier

2373 reassignment

Following the vessel's refit, command of the Excalibur was given to Captain Mackenzie Calhoun, who was assigned to offer assistance and humanitarian aid to the residents of sector 221G, the former Thallonian Empire. (NF novels: House of Cards, Into the Void)

Soon after beginning her mission, the Excalibur answered a distress call from the freighter Cambon and assisted in repairs. This eventually led to the Excalibur being at the forefront of a hostage situation on the Nelkarite homeworld when a Nelkarite leader was willing to let the hostages and thousands of her own people die if the Federation did not meet her demands. (NF novel: The Two-Front War)

The Excalibur went to meet with members of crew that had responded to a distress call from the freighter Kayven Ryin. Upon arrival, debris of the Kayvin Ryin and the shuttlecraft USS Marquand was found. The Excalibur followed an ion trail to the planet Thallon, where the vessel rescued a thousand Thallonians before the planet was destroyed by the hatching of the Great Bird of the Galaxy. (NF novel: End Game)


The Excalibur traveled to Zondar, where Calhoun was seen as the planet's foretold savior. The Excalibur defended Zondar from the approach of the Redeemers, a race of religious extremists who believed in the conversion of planetary populations to the worship of their God, Xant, or, failing conversion, death to the world's population. (NF novel: Martyr)

The Excalibur stayed at Zondar for a time so that Lieutenant Soleta could perform some archeological research. The Excalibur soon received orders to travel to Momidium and retrieve Lieutenant Robin Lefler's mother, Morgan Primus, who had been imprisoned there for five years for trespassing.

The Excalibur next went to the planet Ahmista, where the crew had an encounter with the powerful beings known as the Prometheans, whose weaponry, in the hands of the insane Tarella Lee, was used to annihilate Ahmista's native population. The Excalibur soon met with the USS Seidman to transfer the casualties. (NF novel: Fire on High)

The Excalibur stayed on assignment in Sector 221-G during the opening days of the Dominion War. In mid-2374, the Excalibur attempted a time-traveling "slingshot" maneuver, and found themselves 18 months past their starting date. (NF novel: Once Burned, NF short story: "Stone Cold Truths", NF comic: "Double Time")

The TNG video game: Bridge Commander portrays Captain William Morrison as being in command of the Excalibur in 2374. This is in contradiction with the New Frontier series, although at least at one other point during Calhoun's command was he reassigned temporarily, by Will Riker.


The Excalibur emerged from her time-traveling adventure in late 2375, in the closing days of the Dominion War. (NF short story: "Stone Cold Truths")

Soon after the end of the war, Excalibur saved the survivors of the USS Independence, including passenger William T. Riker, from an attack by a trio of Romulan warbirds. The Excalibur warped to Deep Space 4, where Admiral Alynna Nechayev placed Riker in temporary command of the Excalibur, while Calhoun went on special assignment.

The Excalibur went to Narobi II to investigate reports of Romulans working with the Narobians. Once there, the Excalibur was disabled by a Narobian virus and the Romulans boarded the ship, but the Excalibur crew was able to retake the vessel.

The Excalibur then went to General Gerrid Thul's Dyson Sphere and was able to rescue Captain Calhoun and Captain Jean-Luc Picard, where they were both on undercover assignments. (TNG novel: Double or Nothing)

In late 2375, the Excalibur sent the shuttlecraft Marquand II to the planet Montos on a diplomatic mission, where the away team encountered Kalinda, the missing sister of Ambassador Si Cwan, and Captain Calhoun's son, Xyon, who was in command of the small vessel, the Lyla.

The Excalibur tracked the Marquand and the Lyla to the Quiet Place and rescued her wayward crew members from the Dogs of War and the Redeemers. (NF novel: The Quiet Place)

Soon after, the Excalibur went to the planet Fennar to stop a Redeemer attack on the planet. Captain Calhoun reluctantly decided to help the Redeemers stop the Black Mass, a voracious entity that consumed entire solar systems and was heading directly for the Redeemer homeworld. Soon after, the Excalibur engaged the Black Mass, but was overwhelmed and had to retreat. The Excalibur and the Lyla lured the Black Mass into a black hole, which destroyed most of the insatiable entity. Soon afterwards, the Excalibur was destroyed by a Narobian virus that was planted in the ship's computer during the Double Helix crisis. Captain Calhoun was presumed to be killed in the explosion. (NF novel: Dark Allies)

Alternate realities

In an alternate timeline, William T. Riker was given command of the Excalibur prior to 2378. (TNG novel: Brave New World)

Crew manifest

See USS Excalibur (NCC-26517) personnel.



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.
Ambassador-class explorer/heavy cruiser starships
Federation Starfleet
(primary universe)
standard configuration AdelphiAmbassadorAssuranceAuroraAyersChamplinCrescentCybeleEnterprise-CExcaliburExeterFuryGandhiGravinaHammarskjöldHannibalHardingHawkesburyHickokHoratioIndependenceIndianapolisIroquoisIsisKadoscaKrotusLoma PrietaMacDonaldMadisonManassasMonroeMontgomeryNormanQuiberonSeattleSheltonStrongThelianThornValdemarVelascoWarakurnaWilsonWinslowYamaguchiZarnitzaZhukov Emblem of the United Federation of Planets. Seal of the Federation Starfleet.
variant configurations Horatio-subclass: HoratioNarendra-subclass: NarendraYamaguchi-subclass: ExcaliburForrestalYamaguchiZhukov
Terran Imperial Starfleet
(mirror universe)
Horatiovariant configurations: Ambassador Seal of the Terran Empire icon image.

Appearances and references



External links