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Memory Beta, non-canon Star Trek Wiki

The USS Emden (NCC-1856) was a Federation starship. She was a Constitution-class heavy cruiser in service to Starfleet in the 23rd century. (TOS movie: Star Trek VI: The Undiscovered Country)


Between 2292 and 2293, the Emden, under the command of C. Thomas, was assigned to patrol the Neutral Zone between the Federation and the Klingon Empire. During the Khitomer Conference, the Emden was in Sector 21803. She had been selected by Starfleet Intelligence for additional support in Operation Retrieve, a planned offensive for the rescuing of USS Enterprise-A officers Captain James T. Kirk and Doctor Leonard McCoy from the prison planet Rura Penthe. (TOS movie: Star Trek VI: The Undiscovered Country, Decipher RPG module: Starfleet Operations Manual)



The Emden was represented by the silhouette of a refit Constitution-class starship. The name of her captain and her sector location in 2293 were provided from a page of the plans not seen in the movie.
The Emden was either named for the city in northern Germany or one of several German cruisers of the early 20th century.
Decipher roleplaying game supplement states that this vessel may be a Ranger-class starship.

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Early series of Constitution-class class I/class XI heavy cruiser starships
Federation, Starfleet built to mk I specifications ConstellationConstitutionDefiantEndeavorEnterpriseExcaliburExeterFarragutHoodIntrepidKongoLexingtonPotemkinRepublicValiant (I)Yorktown Emblem of the United Federation of Planets. Seal of the Federation Starfleet.
various specifications AlexanderAsimovBraheConfederateEnterprise (Vardaine copy)Excalibur IIGloryIndomitableIsshasshteReuben JamesJohn F. KennedyMendelNautilusOlympus MonsOrtiseiPathfinderSurakTao FengTrexelpriseTrojanVentureZimbabwe

see also: unnamed Constitution-class starshipsConstitution-subclass (3060s refit): ArmstrongCuyahogaExcalibur-MNobleExeter-subclass: Exeter-CKirkExcalibur-subclass: ExcaliburTuckerVesper-subclass: VesperMontrealOakland

Terran Empire, Starfleet
(mirror universe)
ConstitutionCarnageConstellationBansheeDefiantEnterpriseExcalibur (23rd century)Excalibur (Excalibur-subclass)ExeterHoodKodosLexingtonNobunagaPotemkin Seal of the Terran Empire.
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
31st and 32nd century subclass: Constitution-subclass