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Yamaguchi class

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For other uses, see Yamaguchi.

The Yamaguchi class was a Federation starship class in Starfleet service since the 24th century. The Yamaguchi was a sub-class of the Ambassador-class heavy cruiser. In the 25th century, a new prototype was launched and this subclass became officially known as the Yamaguchi-class fleet support cruiser retrofit. (ST reference: Star Trek Encyclopedia, STO mission: "Temporal Ambassador")

History and specificationsEdit

The Yamaguchi's hull sported several changes and improvements over the regular Ambassador-class starship. The bussard collectors received caps on top and below. The nacelle pylons were shortened. The saucer section was planted further back on the neck. Some models included an additional shuttlebay below the aft shuttlebay. (ST reference: Star Trek Encyclopedia, STO missions: "Temporal Ambassador", "Welcome to Earth Spacedock")

Ambassador- and Yamaguchi-class starships featured superior maneuverability compared to other heavy cruisers in the 25th century. (STO mission: "Temporal Ambassador")

Class variationsEdit

ExcaliburNCC26517

The USS Excalibur in 2376.

SubclassesEdit

In the early 25th century, the Ambassador-class starship was available in three variants: support cruiser, retrofit and fleet retrofit. Differences among the subclasses were equipment, hull durability and power levels. Basic Ambassadors were cruisers commanded by officers with the rank of commander or higher. Retrofits were available to Starfleet officers with the rank of admiral. The fleet variant required support by a Federation fleet to be obtained. Only the fleet retrofit included the Yamaguchi subclass. The components saucer, hull, neck, pylons and nacelles were interchangeable between Ambassador- and Yamaguchi-class starships. (ST video game: Star Trek Online)

LiveryEdit

By 2409, a total of seven basic livery designs was available to choose from, which could be modified further. These options were known as: Types 1-5, and Fleet and Veteran. (STO mission: "Temporal Ambassador")

In addition, the installation of shields from specific factions modified the hull appearance, including shields from the Reman Resistance, the Breen Confederacy and the Dominion. (STO missions: "Coliseum", "Cold Storage", "Boldly They Rode")

Known vesselsEdit

Ambassador-class explorer/heavy cruiser starships
Ufp-emblem AdelphiAmbassadorAssuranceAuroraAyersChamplinCrescentCybeleEnterprise-CExcaliburExeterFuryGandhiGravinaHammarskjöldHannibalHardingHawkesburyHickokHoratioIndependenceIroquoisIsisKadoscaKrotusLoma PrietaMacDonaldMadisonManassasMonroeMontgomeryNormanQuiberonSeattleSheltonStrongThelianThornValdemarVelascoWarakurnaWilsonWinslowYamaguchiZarnitzaZhukov

Yamaguchi-subclass: Yamaguchi

Starfleet Command logo

AppendicesEdit

ConnectionsEdit

Starship classes of the Federation Starfleet
subclass groups

Akira (ArmitageThunderchild) • Ambassador (AlaskaYamaguchi) • Apollo (Akula light cruiser frigate) • Avenger battlecruiser (Arbiter) • Chesapeake (Mongrel) • Cheyenne (DakotaStargazer) • Concorde (Geneva battlecruiserPresidio) • Constellation (Challenger deep space explorer) • Chimera heavy destroyer (Manticore) • Constitution (AchernarBonhomme RichardTikopaiEnterpriseExeterExcaliburVesper) • Danube (Yellowstone) • Decatur (Dreadnought) • Defiant (GallantIncursionSao PauloVigilant escort) • Dervish (GryphonHermes escortMaelstromTempest) • Destiny (NimbusOracleTrident) • Excelsior (BismarckKirovNew JerseyResolute) • Galaxy (Andromeda (25th century)CelestialEnvoyGalaxy XMonarch cruiserVenture cruiserYamato dreadnought) • Hermes scout (CygnusMonoceros) • Intrepid (BellerophonCochrane science vesselDiscovery (Federation)Pathfinder) • Kumari (CharalKhyzon) • Luna (CometPolarisSol) • Miranda (AntonReliantSoyuz) • Nebula (Magellan) • Norway (Oslo) • Nova (AuroraQuasarRhode Island) • NX (ColumbiaPoseidonOberth (Gagarin (23rd century)Sagan) • Olympic (HopeHorizon science vessel) • Prometheus (CerberusHephaestusHestiaPhoenix) • Ptolemy (DollondDopplerKeppler) • Remora (Charger) • Saladin (CochiseSiva) • Santa Fe (Newport) • Saber (GladiusRapierUshaan) • Sentinel (EmissaryNomad cruiserVanguard) • Solanae (HeliosMontgomeryOmega) • Sovereign (ImperialRegentMajesticNoble cruiser) • Steamrunner (Zephyr) • Vesta (AventineRademaker) • Wells (Polarity)

Ufp-emblem Starfleet Command logo
other named classes

AA classAakennAchillesAdvanceAegianAeolusAerieAkula destroyer escortAmbassador HardinAndesAndorAndromeda (24th century)AntaresApacheAquariusArcherArchimedesArielAscendantAtroxAvenger (23rd century)BabcockBaderBakerBaton RougeBodeBolarusBonaventureBradburyBrentonCanadaCanopusCapella (23rd century)Capella (24th century)CastorCentaurCentaurusChallengerChandleyChariotChimeraChristopherCle DanCochrane transportColumbiaContinentContortrixCopernicusDaedalusDauntlessDeckerDefenderDeltaD'KyrDenevaDerfDrexlerDurrettEagleEclipseEdwardEinsteinEl Doradofuture EnterpriseEpochEpsilonEternalFederationFenlonFermiFijiFreedomFrontierGagarin (24th century)GalenGangesGenevaGenserGracefulGraysonGriffonGuardianGeminiHaleHermes fast cruiserHestonHoganHokule'aHorizon cruiserIcarusIlthirinIndomitableIntrepid (light cruiser)IowaIstanbulIwo JimaClass JJupiterKarekhKeithKethkinKievK'KmarakKolm-AnKorolevLarsonLauroLaweyaLegacyLenthalLexingtonLibertyLokiLoknarLondonMakinMannMarklinMarshallM'BengaMediterraneanMercedMercury (courier)Mercury (escort)MerianMessierMidwayMissionMissouriMobulaiMoKalMoscowMulciberNachthexen) • NarcineNautilusNelsonNew OrleansNiagaraNoble laboratory vesselNomad escortNorthamptonOberonOdinOdysseusOdysseyOkinawaOppenheimerOrionOsakaOuroborosOverfieldPaladin battlecruiserPaladin destroyerPaladin (24th century)PerseusPioneerPhalanxPhantomPhiladelphiaPinnaclePiperPolluxPortsmithPremonitionProximaPyotr VelikiyPyreneesRakotaRanger battlecruiserRanger cruiserRanger scoutRenaissanceRickenbackerRigelRochesterRoyal SovereignSagittariusSamsonSawyerScorpioScryerScyllaSequoiaSevaijenShi'KahrSierraSolarSpringfieldSurakSydneyTangentTempestTheophrastusThomas PaineThucydidesThufirTiberiusTiconderogaTheseusTritiumTyphonTyphoonUkoraUlyssesUralUtahVenture scoutVigilant scoutVoyagerWambunduWilkersonWei-FaWellingtonYamatoYorkshireYorktownZodiacunnamed

general type

Defiant pathfinderJohn GlennHuronRaging QueenSun TzuValley ForgeFederation assault shipFederation cargo shipFederation colony shipFederation construction shipFederation cruiserdeep galaxy shipFederation frigateFederation galaxy shipFederation holoshipFederation light cruiser (Constitution-variant light cruiserIntrepid-variant light cruiser) • Federation medium cruiser (Excelsior-variant medium cruiser) • Federation mining freighterFederation repair shipStarfleet tanker

External linksEdit


ReferencesEdit

  1. Star Trek Online reference: [Federation Starship Chart]

Star Trek Online cover
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