Yamaguchi class

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: The Star Trek Encyclopedia, STO mission: "Temporal Ambassador")

History and specifications[]

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: The 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 variations[]

ExcaliburNCC26517 — The USS *Excalibur* in 2376.

Subclasses[]

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. (STO - Klingon War mission: "Welcome to Earth Spacedock")

With the launch of the Narendra-class support cruiser in 2410, the number of available interchangeable components increased to include the new ship class. (STO - Victory Is Life mission: "Welcome to Earth Spacedock")

Livery[]

By 2409, a number of basic livery designs was available to choose from, which could be modified further. These options were designated Types 1-7, Fleet, Fleet 2, Upgrade, 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 vessels[]

Ambassador-class explorer/heavy cruiser starships
Federation Starfleet (primary universe)	standard configuration	Adelphi • Ambassador • Assurance • Aurora • Ayers • Champlin • Crescent • Cybele • Enterprise-C • Excalibur • Exeter • Fury • Gandhi • Gravina • Hammarskjöld • Hannibal • Harding • Hawkesbury • Hickok • Horatio • Independence • Indianapolis • Iroquois • Isis • Kadosca • Krotus • Loma Prieta • MacDonald • Madison • Manassas • Monroe • Montgomery • Norman • Quiberon • Seattle • Shelton • Strong • Thelian • Thorn • Valdemar • Velasco • Warakurna • Wilson • Winslow • Yamaguchi • Zarnitza • Zhukov
Federation Starfleet (primary universe)	variant configurations	Horatio-subclass: Horatio • Narendra-subclass: Narendra • Yamaguchi-subclass: Excalibur • Forrestal • Yamaguchi • Zhukov
Terran Imperial Starfleet (mirror universe)		Horatio • variant configurations: Ambassador

Appendices[]

Connections[]

Starship classes of the Federation Starfleet
subclass groups	*Akira* (Alita • Armitage • Thunderchild) • *Ambassador* (Alaska • Narendra • *Yamaguchi) • Apollo* (Akula frigate / light cruiser) • *Cardenas* (Buran) • *Chesapeake* (Mongrel) • *Cheyenne* (Dakota • Stargazer) • *Concorde* (Geneva battlecruiser • Presidio) • *Constellation* (Challenger deep space explorer) • Chimera heavy destroyer (Manticore) • *Constitution* (Achernar • Bonhomme Richard • Tikopai • Enterprise • Exeter • Excalibur • Vesper • Kirk • *Crossfield* (Glenn • 32nd century refit) • *Danube* (Yellowstone) • *Decatur* (Dreadnought) • *Defiant* (Gallant • Incursion • Nachthexen • Sao Paulo • Valiant • Vigilant escort) • *Dervish* (Gryphon • Hermes escort • Maelstrom • Tempest) • *Destiny* (Nimbus • Oracle • Trident) • *Engle* (Earhart) • *Excelsior* (Bismarck • Curry • Kirov • New Jersey • Resolute) • *Galaxy* (Andromeda (25th century) • Celestial • Envoy • Galaxy X • Monarch cruiser • Ross • Venture cruiser • Yamato dreadnought) • Hermes scout (Cygnus • Monoceros) • *Inquiry* (Avenger battlecruiser • Arbiter) • *Hoover* (Edison) • *Intrepid* (Bellerophon • Cochrane science vessel • Discovery (25th century) • Janeway • Pathfinder • Trailblazer • Yeager) • *Kumari* (Charal • Khyzon) • *Luna* (Comet • Polaris • Sol • Titan) • *Magee* (Shran (escort)) • *Malachowski* (Helios (tug)) • *Miranda* (Anton • Reliant • Soyuz) • *Merian* (Merian (dreadnought)) • *Nebula* (Magellan) • *New Orleans* (Lafayette) • *Nimitz* (Europa) • *Norway* (Oslo) • *Nova* (Aurora • Quasar • Rhode Island) • NX (Columbia • Poseidon) • *Oberth* (Clarke • Gagarin (23rd century) • Grissom • Sagan) • *Odyssey* (Verity • Yorktown (cruiser)) • *Olympic* (Hope • Horizon science vessel) • *Prometheus* (Cerberus • Hephaestus • Hestia • Phoenix) • *Ptolemy* (Dollond • Doppler • Keppler) • *Remora* (Charger) • *Saladin* (Cochise • Siva) • *Santa Fe* (Newport) • *Saber* (Gladius • Rapier • Ushaan) • *Sentinel* (Emissary • Nomad cruiser • Vanguard) • *Shepard* (Gagarin (25th century)) • *Solanae* (Helios • Montgomery • Omega) • *Sovereign* (Archon • Imperial • Majestic • Noble cruiser • Regent) • *Steamrunner* (Appalachia • Zephyr) • *Vesta* (Aventine • Rademaker) • *Walker* (Georgiou • Shenzhou ) • *Wells* (Eternal • Ouroboros • Verne)
other named classes	AA class • Aakenn • Achilles • Advance • Aegian • Aeolus • Aerie • Akula destroyer / escort • Ambassador Hardin • Andes • Andor • Andromeda (24th century) • Angelou • Antares • Apache • Aquarius • Archer • Archimedes • Ark Royal • Ariel • Ascendant • Atrox • Avenger (scout) • Babcock • Bader • Baker • Baton Rouge • Berena • Bode • Bolarus • Bonaventure • Bradbury • Brenton • California • Canada • Canopus • Capella • Castor • Centaur • Centaurus • Ceres • Cestus • Challenger • Chandley • Chariot • Chimer • Chimera fast frigate • Christopher • Clarke (25th century) • Cle Dan • Cochrane transport • Columbia • Condor (raider) • Continent • Contortrix • Copernicus • Courage • Daedalus • Dauntless • Decker • Defender • Delta • D'Kyr • Deneva • Derf • Drexler • Durrett • Eagle • Eclipse • Edward • Einstein • Eisenberg • El Dorado • future Enterprise • Epoch • Epsilon • Erewon • Eternal • Federation • Fenlon • Fermi • Fiji • Freedom • Friendship • Frontier • Gagarin (24th century) • Galen • Gallant • Ganges • Geneva • Genser • Graceful • Grayson • Griffon • Guardian • Gemini • Hale • Hermes fast cruiser • Heston • Hogan • Hokule'a • Horizon cruiser • Icarus • Ilthirin • Indomitable • Intrepid (22nd century) • Iowa • Istanbul • Iwo Jima • Class J • Jupiter • Karekh • Keith • Kethkin • Kiev • K'Kmarak • Kolm-An • Korolev • Larson • Lauro • Laweya • Legacy • Lenthal • Lexington • Liberty • Loki • Loknar • London • Madison • Makin • Mann • Marklin • Mars • Marshall • M'Benga • Mediterranean • Merced • Mercury (courier) • Mercury (escort) • Mercury (scout) • Merian • Merian (dreadnought) • Messier • Meteor • Midway • Mission • Missouri • Mobulai • MoKal • Moscow • Mulciber• Narcine • Nautilus • Nelson • Niagara • Noble laboratory vessel • Nomad escort • Northampton • Oberon • Odin • Odysseus • Okinawa • Oppenheimer • Orion • Osaka • Overfield • Paladin battlecruiser • Paladin destroyer • Parliament • Paladin (24th century) • Perseus • Pioneer • Phalanx • Phantom • Philadelphia • Pinnacle • Piper • Pollux • Portsmith • Pralim • Premonition • Protostar • Proxima • Pyotr Velikiy • Pyrenees • Rakota • Ranger battlecruiser • Ranger explorer • Ranger scout • Renaissance • Rickenbacker • Rigel • Rochester • Royal Sovereign • Sagittarius • Samson • Saturn • Sawyer • Scorpio • Scryer • Scylla • Sequoia • Sevaijen • ShiKahr • Sierra • Solar • Springfield • Sulek • Surak • Sydney • Tangent • Theophrastus • Thomas Paine • Thucydides • Thufir • Tiberius • Ticonderoga • Universe •Theseus • Tripper • Tritium • Typhon • Typhoon • Ukora • Ulysses • Ural • Utah • Venture scout • Vigilant scout • Voyager • Wallenberg • Wambundu • Wei-Fa • Wellington • Wilkerson • Wizard • Yamato • Yorkshire • Yorktown • Zodiac • unnamed
general type	Defiant pathfinder • Raging Queen • Sun Tzu • Valley Forge • Federation assault ship • Federation battleship • Federation cargo ship • Federation colony ship • Federation construction ship • Federation cruiser • deep galaxy ship • Federation dreadnought • Federation freighter • Federation frigate • Federation galaxy ship • Federation holoship • Federation heavy cruiser (2380s heavy cruiser) • Federation light cruiser (Constitution-variant light cruiser • Intrepid-variant light cruiser) • Federation medium cruiser (Excelsior-variant medium cruiser) • Federation mining freighter • Federation repair ship • Starfleet tanker

External links[]

Fleet Support Cruiser Retrofit article at Star Trek Online Wiki.

References[]

↑ Star Trek Online reference: [Federation Starship Chart]

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

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