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ISS Excalibur (NCC-1664)

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For other uses, see Excalibur.

In the mirror universe, the ISS Excalibur (NCC-1664) was an Imperial Starfleet vessel in service in the 23rd century.

In 2268, the Excalibur was ordered to test the new M-5 multitronic computer that had been developed. One of the tests was to participate in wargames against several other starships, including the ISS Enterprise. During the wargames, the M-5 computer supposedly malfunctioned and launched an assault with full weapons power against the Enterprise. The Enterprise was able to survive the assault, and later Captain Spock suspected it was an attempt to assassinate him. (TOS novel: Glass Empires: The Sorrows of Empire).

The Excalibur remained under the malfunctioning computer's control for decades afterwards, in the Daystrom Testing Grounds, where the vessel was stored. Excalibur was one of the four starships in M-5's fleet that assaulted the ISS Excelsior in the 2290s. (TOS game: Shattered Universe)

ISS Excalibur seems to be the mirror universe counterpart of the USS Excalibur (NCC-1664), a Constitution-class starship, in service in the 23rd century.
Ships named Excalibur
United Earth, Starfleet Excalibur (NX-03, NX-class) Seal of United Earth United Earth Starfleet Emblem
Federation, Starfleet USS Excalibur (2240s starships)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-class)USS Excalibur (NCC-26517-A, Galaxy-class)USS Excalibur (NCC-94547, Excalibur-class)see also: Excalibur-class Ufp-emblem Starfleet Command logo
Federation Starfleet
(alternate reality)
USS Excalibur (Arbiter-class)USS Excalibur (Constitution-class)USS Excalibur (Defender-class)USS Excalibur (Guardian-class)USS Excalibur (Interceptor-class) UFP 2260 alt2250s alt cmd badge
Imperial Starfleet
(mirror universe)
ISS Excalibur (NCC-1664, Constitution-class)ISS Excalibur (NCC-94547, Excalibur-class) TerranEmpire
Khanate Earthfleet
(alternate timeline)
Excalibur (Earthfleet starship) Khan
Early series of Constitution-class class I/class XI heavy cruiser starships
Federation, Starfleet built to mk I specifications ConstellationConstitutionDefiantEndeavorEnterpriseExcaliburExeterFarragutHoodIntrepidKongoLexingtonPotemkinRepublicValiant (I)Yorktown Ufp-emblem Starfleet Command logo
various specifications AlexanderAsimovBraheConfederateEnterprise (Vardaine copy)Excalibur IIGloryIndomitableIsshasshteReuben JamesJeffersonJohn F. KennedyNautilusOlympus MonsOrtiseiPathfinderSurakTao FengTrojanVentureZimbabwe

see also: unnamed Constitution-class starshipsExeter-subclass: Exeter-CKirkExcalibur-subclass: ExcaliburTuckerVesper-subclass: VesperMontrealOakland

Terran Empire, Starfleet
(mirror universe)
ConstitutionCarnageConstellationBansheeDefiantEnterpriseExcalibur (23rd century)Excalibur (Excalibur-subclass)ExeterHoodKodosLexingtonNobunagaPotemkin TerranEmpire
23rd century subclasses: Bonhomme Richard-subclass (mk II) • Achernar-subclass (mk III) • Tikopai-subclass (mk IV) • Enterprise-subclasses (mk I-III refits)

24th and 25th century subclasses: Excalibur-subclassExeter-subclassVesper-subclass • other Constitution variants

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