Horizon class

For other uses, see Horizon.

The Horizon-class was a type of early Earth/Federation exploration starship in service from 2150 to 2197*. Classified as a Cruiser, they were originally launched with laser-based weapons and defenses. At the commencement of open hostilities in the Earth-Romulan War, the weapons were upgraded in order to increase their combat performance. Following the war, they continued in service following the incorporation of the United Federation of Planets.

Their Second Generation Warp Drive system was centered around an antimatter spiked fusion drive utilizing a ratio mix of 20:1 matter/antimatter for a maximum speed of warp 3.25 (34.2 C).

The Horizon Class was one of the most important ships and classes in spaceflight history. The flagship for early United Federation of Planets space exploration, the USS Horizon journeyed to the edge of the galaxy, encountering many new worlds in its numerous voyages. At the end of its commissioned life, it was retired to Star Fleet's Spaceflight Museum on Memory Alpha.(TOS reference: Spaceflight Chronology)

note: dates adjusted to canon format from Star Trek Spaceflight Chronology dates 2093-2140.

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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
Coalition of Planets allies	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

Starship classes of the Spaceflight Chronology
United Nations, United Earth	Assist-class • Aventeur-class • Belmont-class • Cochrane-class • Columbus-class • Companion-class • Cosmos-class • DY-500-class • Edison-class • Franklin-class • Galileo-class • Gallant-class • Glenn-class • Horizon-class • Keller-class • Liberty-class • Lindbergh-class • Long-class • Magellan-class • Merchant-class • Messier-class • Monticello-class • Parr-class • Saratoga-class • Wheeler-class • Vanguard-class • Verne-class
Federation, Starfleet	Advance-class • Baton Rouge-class • Bode-class • Bradley-class • Broadway-class • Byrne-class • Cabot-class • Calvary-class • Canopus-class • Castor-class • Clark-class • Constitution-class • Chariot-class • Declaration-class • Doppler-class • Eagle-class • Hale-class • Hopkins-class • Hunter-class • Libran-class • Lowell-class • Mann-class • Marshall-class • Master-class • Mercury-class • McCormick-class • Messier-class • Newton-class • Normandy-class • Palomar-class • Pointer-class • Portsmith-class • Powers-class • Placido-class • Provider-class • Rickenbacker-class • Sawyer-class • Stellarford-class • Tritium-class • University-class • Voyager-class • Watt-class

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Horizon class

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