The D'Kyr-class was a type of Vulcan Confederacy starship, a combat cruiser in Vulcan High Command service in the 22nd century. The D'Kyr vessels eventually served on the side of the Coalition of Planets allies during the Earth-Romulan War. (ENT episodes: "Future Tense", "Cease Fire"; ENT novel: Beneath the Raptor's Wing)

History[edit | edit source]

In the year 2154, a number of D'Kyr-class vessels were involved in the Battle of Andoria as part of Administrator V'Las' plans to invade Andoria. Several of these vessels also attacked the Earth starship Enterprise when they intervened in the conflict. (ENT episode: "Kir'Shara")

Later that year, a number of these vessels were assigned to the joint Andorian-Earth-Tellarite-Vulcan fleet that had combined to form a sensor grid that was to track down a Romulan drone ship which had attempted to create a rift between the different planets. (ENT episode: "United")

In 2155, two D'Kyr-class starships were captured near Alpha Centauri by the Romulans using the arrenhe'hwiua telecapture system. These two ships were used by the Romulans to wipe out a Human convoy and were then destroyed by Vulcan warships. (ENT novel: Beneath the Raptor's Wing)

Upgraded D'kyr class in the 25th century

D'Kyr-class science vessels were still in continual use following the 22nd century though the Vulcans had made upgrades to the technology used by these vessels. While initially used as combat cruisers by the Vulcan High Command, later iterations were used strictly for planetary defense, scientific exploration as well as rescue missions. Eventually, the design was shared with Starfleet allowing the Federation to build these vessels. (ST video game: Star Trek Online)

Kelvin timeline[edit | edit source]

Following the destruction of the USS Enterprise at Altamid, Spock requested that Elder T'Pah dispatch one of these to assist the USS Endeavour. (TOS - Boldly Go comic: "Issue 2")

Mirror universe[edit | edit source]

In the mirror universe, D'Kyr-class vessels were amongst the type of ships utilized by Vulcan rebels against the Terran Empire in the mid-22nd century. In early 2155, a number of D'Kyr's were among those who attacked the ISS Avenger. (ENT episode: "In a Mirror, Darkly, Part II")

Specifications[edit | edit source]

Class variations[edit | edit source]

The hull of the D'Kyr-class science vessel did not allow its commanding officer to choose from different designs of livery, but the base type could be modified further. The base type was designated "Type 1". (STO - The Klingon War mission: "Welcome to Earth Spacedock")


Known vessels[edit | edit source]

D'Kyr-class combat cruiser/science vessel starships
Confederacy of Vulcan, Vulcan Defense Force
(primary universe)
DFC D'KyrDFC SeleyaDFC SepokDFC Tal'Kirunnamed Vulcan IDIC emblem.
Federation, Starfleet
(primary universe)
DFC D'KyrVSS SovalVS T'AndromaVS T'PauDFC Tal'Kirunnamed UFP emblem.Starfleetlogo.
United Federation of Planets, Vulcan High Command
(alternate reality)
Vulcan science vessel UFP emblem. Vulcan IDIC emblem.
Terran Empire rebels
(mirror universe)
unnamed Terran Empire emblem. Vulcan IDIC emblem.

Appendices[edit | edit source]

Connections[edit | edit source]

Starship classes of the Confederacy of Vulcan
By name D'KyrD'VahlKarekhMaymoraMerchantSitarSolkarSovalSuurokT'KarathT'PariT'Plana HathTal'KyrToj LolVoroth Emblem of the Confederacy of Vulcan.
By type Protectorate ringshipVahklas typeVulcan cruiserVulcan probe shipVulcan robot shipVulcan shuttleVulcan survey ship
Starship classes of the Coalition of Planets
ArrowAssistCavalryChristopherCosmosDaedalusDegbaxisDiscoveryDjartannaDoppler (scout)EdisonGalliantG'buqoffHopkinsHorizonIntrepid (22nd century)LongMarshallMercury (scout)MessierMinutemanNXPoseidonStriderTaholsinTanathooefThofsinToj LolVanguard (starship)VerneYorktownZeusZoenamy Seal of United Earth. Emblem of Alpha Centauri. Emblem of Alpha Centauri. Emblem of Tellar. Andorian emblem.
Starship classes of the Earth-Romulan War


United Planets of Tellar: DegbaxisG'buqoffPhinda Confederacy of Vulcan: D'KyrSuurokToj Lol
Starship classes of the Federation Starfleet
subclass groups


other named classes

AA classAakennAchillesAdvanceAegianAeolusAerieAkula destroyer / escortAmbassador HardinAndesAndorAndromeda (24th century)AntaresApacheAquariusArcherArchimedesArielAscendantAtroxAvenger (scout)BabcockBaderBakerBaton RougeBodeBolarusBonaventureBradburyBrentonCaliforniaCanadaCanopusCapella (23rd century)Capella (24th century)CastorCentaurCentaurusCeresChallengerChandleyChariotChimera fast frigateChristopherCle DanCochrane transportColumbiaContinentContortrixCopernicusCrossfieldDaedalusDauntlessDeckerDefenderDeltaD'KyrDenevaDerfDrexlerDurrettEagleEclipseEdwardEinsteinEl Doradofuture EnterpriseEpochEpsilonErewonEternalFederationFenlonFermiFijiFreedomFrontierGagarin (24th century)GalenGangesGenevaGenserGracefulGraysonGriffonGuardianGeminiHaleHermes fast cruiserHestonHoganHokule'aHooverHorizon cruiserIcarusIlthirinIndomitableIntrepid (light cruiser)IowaIstanbulIwo JimaClass JJupiterKarekhKeithKethkinKievK'KmarakKolm-AnKorolevLarsonLauroLaweyaLegacyLenthalLexingtonLibertyLokiLoknarLondonMadisonMakinMannMarklinMarshallM'BengaMediterraneanMercedMercury (courier)Mercury (escort)MerianMessierMeteorMidwayMissionMissouriMobulaiMoKalMoscowMulciberNachthexenNarcineNautilusNelsonNew OrleansNiagaraNoble laboratory vesselNomad escortNorthamptonOberonOdinOdysseusOdysseyOkinawaOppenheimerOrionOsakaOuroborosOverfieldPaladin battlecruiserPaladin destroyerPaladin (24th century)PerseusPioneerPhalanxPhantomPhiladelphiaPinnaclePiperPolluxPortsmithPralimPremonitionProximaPyotr VelikiyPyreneesRakotaRanger battlecruiserRanger explorerRanger scoutRenaissanceRickenbackerRigelRochesterRoyal SovereignSagittariusSamsonSawyerScorpioScryerScyllaSequoiaSevaijenShepardShiKahrSierraSolarSpringfieldSulekSurakSydneyTangentTempestTheophrastusThomas PaineThucydidesThufirTiberiusTiconderogaTheseusTripperTritiumTyphonTyphoonUkoraUlyssesUralUtahVenture scoutVigilant scoutVoyagerWallenbergWambunduWei-FaWellingtonWilkersonWizardYamatoYorkshireYorktownZodiacunnamed

general type


External links[edit | edit source]
