For other uses, see Poseidon.

The Poseidon class was a series of United Earth destroyer starships in Earth Starfleet service around the time of the 2150s decade. It became a Federation starship class following the founding of the Federation in 2161. The Poseidon was considered a variant of the NX-class. (ST video game: Legacy, ENT - Rise of the Federation novel: Live by the Code)

History[]

During the latter half of the 2150s, ships of the Poseidon class were among those which saw action against the Romulan Star Navy in the Earth-Romulan War. (ST video game: Legacy)

The heavily armed Poseidon class was developed late in the war as an NX-variant destroyer. It was intended to replace the smaller Neptune-class.

By July 2165, the Poseidon- and Ceres-class projects were competing with one another for further development by the UESPA and Alpha Centauri Space Research Council arms of Starfleet. Members of staff favored the Poseidon as the Ceres was considered redundant due to the performance of the Daedalus-class. However, Starfleet Chief of Staff Jonathan Archer found the Poseidon too heavily armed for a peacetime vessel. (ENT - Rise of the Federation novel: Live by the Code)

Specifications[]

In 2159, these vessels were equipped with ten phase bank and eight Spatial/Photonic torpedo launcher banks, and were protected by polarized hull plating. The Poseidon-class was a contemporary design to the earlier NX-class design and shared many similar components, such as the saucer section and warp nacelle designs. The Poseidon design was a slight modification on the NX as the nacelle pylons were slung underneath the ship, while a dedicated torpedo launcher module was connected to the upper hull. This feature would be repeated across many starship designs over the next 200 years, including the Miranda-class and Nebula-class designs. (ST video game: Legacy)

Known vessels[]

This article or subsection has an associated category.	Poseidon class starships

• USS Coto (NCC-213)
• USS Homer (NCC-216)
• USS Poseidon (NCC-200)
• USS Olympia (NCC-209)

Appendices[]

Connections[]

Starship classes of the Earth-Romulan War
United Earth, Starfleet	Arrow • Assist • Cavalry • Christopher • Cosmos • Daedalus • Discovery • Doppler (scout) • Edison • Galliant • Ganges • Hopkins • Horizon • Intrepid (22nd century) • Liberty (picket cruiser) • Long • Marshall • Mercury (scout) • Messier • Minuteman • NX • Poseidon • Strider • Verne • Vanguard (transport) • Yorktown • Zeus
Coalition of Planets allies	Alpha Centauri Concordium of Planets: Djartanna • Zoenamy	Andorian Empire: Kumari • Taholsin • Tanathooef • Thofsin
	United Planets of Tellar: Degbaxis • G'buqoff • Phinda	Confederacy of Vulcan: D'Kyr • Suurok • Toj Lol
Romulan Star Empire, Imperial Fleet	22nd century bird-of-prey • 2150s bird-of-prey • late-2150s bird-of-prey • 22nd century cargo ship • biogenic transport • Alocala • Battlehawk • Hathos • Klivai Vang'radai • Morlasam Cl'vangas • Re'ravsam • Skyhawk • Stelai'deletham • S'ten Talasam • Swarm • Swiftwing • Takaan • T'Liss • Vas'maklaram • Vas'rosvlai • Vastagor Vastarum • Vastari Sanalam

Starship classes and spacecraft types of Earth
Arrow • Assist • Cavalry • Christopher • Cosmos • CZ-100 • DY-100 • DY-500 • DY-700 • DY-1100-class • Daedalus • Discovery • Doppler (scout) • Edison • Galliant • Ganges • Hopkins • Horizon • Intrepid (22nd century) • J (freighter) • Long • Marshall • Mercury (scout) • Messier • Minuteman • Neptune • NX • Poseidon • Strider • Vanguard (transport) • Verne (Earth) • Y (freighter) • Yorktown • Zeus

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

Background[]

No explanation is given for these vessels' Federation Starfleet-style registry numbers and their use of the "USS" name prefix, despite existing two years before the inception of the Federation.

The game software included numerous other names for ships of this class that were not prepared to be used in gameplay, and are hidden in the game's source code, including USS Adams, USS Aurbach, USS Boston, USS Commonwealth, USS Concord, USS Fenway, USS Liberty, and Paul Revere. Possibly, these vessels were intended for some feature of the game that was not completed. For example, none of these ships are coded with registry number graphics like those the included ships possess.