The Galaxy X-class was a type of Federation starship, a dreadnought-type subclass of the Galaxy-class design, in Starfleet service at the end of the 24th century. The vessels continued in service into the 25th century. (TNG video game: Birth of the Federation; STO video game: Star Trek Online)

The additional engine nacelle assembly greatly increased the ship's speed and power. (CCG set: Alternate Universe, card: "Future Enterprise")

In a possible future timeline, the USS Enterprise-D had been converted to the specifications of this class by the 2390s, although that reality was aborted when Q made Jean-Luc Picard aware of how his fate would unfold. (TNG episode: "All Good Things...")

Known shipsEdit

USS Agrippa USS Arizona USS Aurora USS Belfast USS Berwick USS Brooklyn USS Calypso USS Crusader USS Emerald USS Enterprise-D (alternate) USS Galaxy USS Glasgow USS Gorizia USS Huntington USS Kitakami USS Konigsberg

USS Kwon Do USS Lee USS Liepzig USS Memphis USS Montcalm USS Nagara USS Odyssey USS Raleigh USS Roanoke USS Sendai USS Taranto USS Venezia USS Venture USS Yamato USS Young

ConnectionsEdit

Starship classes of the United Federation of Planets
By name	Aakenn • Achernar • Achilles • Advance • Aegian • Aeolus • Aerie • Akira • Akula (destroyer) • Akula (frigate) • Alaska • Ambassador • Andes • Andromeda • Andor • Antares • Anton • Apache • Apollo • Archer • Ariel • Ascendant • Avenger • Babcock • Bader • Baker • Baton Rouge • Bode • Bolarus • Bonaventure • Bonhomme Richard • Bradbury • Brenton • Canada • Canopus • Capella • Centaur • Centaurus • Cerberus • Challenger (deep space explorer) • Challenger • Chandley • Charger • Chariot • Chesapeake • Cheyenne • Chimera • Christopher • Cle Dan • Cochise • Cochrane • Constellation • Constitution • Continent • Copernicus • Cygnus • Daedalus • Danube • Decatur • Decker • Defender • Defiant • Deneva • Derf • Dollond • Doppler • Dreadnought • Drexler • Durrett • Eagle • Edward • El Dorado • Enterprise (23rd century) • Enterprise (alternate future) • Epoch • Epsilon • Erewon • Excalibur • Excelsior • Federation • Fenlon • Fermi • Fiji • Freedom • Frontier • Gagarin • Galaxy • Galen • Geneva • Genser • Graceful • Grayson • Griffon • Hale • Hardin • Hephaestus • Hermes (scout) • Hermes (fast cruiser) • Heston • Hogan • Hokule'a • Horizon • Huron • Icarus • Incursion • Indomitable • Intrepid • Iowa • Istanbul • Iwo Jima • Class J • Karekh • Keith • Keppler • Kethkin • Kiev • K'Kmarak • Kolm-An • Korolev • Larson • Lauro • Laweya • Legacy • Lenthal • Lexington • Liberty • Loki • Loknar • London (troop transport) • Luna • Makin • Mann • Marklin • Marshall • M'Benga • Mediterranean • Merced • Mercury • Merian • Messier • Midway • Miranda • Mission • Missouri • Mockingbird • MoKal • Monoceros • Moscow • Mulciber • Nebula • Nelson • New Orleans • Newport • Niagara • Noble • Nomad • Northampton • Norway • Nova • Oberon • Oberth • Odin • Odysseus • Odyssey • Okinawa • Olympic • Oppenheimer • Orion • Osaka • Overfield • Paladin (destroyer) • Paladin (24th century) • Philadelphia • Phoenix • Pinnacle • Piper • Polarity • Pollux • Portsmith • Premonition • Prometheus • Proxima • Ptolemy • Pyrenees • Rakota • Ranger (cruiser) • Ranger (scout) • Reliant • Remora • Renaissance • Rickenbacker • Rigel • Rochester • Royal Sovereign • Saber • Sagan • Saladin • Samson • Santa Fe • Sawyer • Scorpio • Scylla • Sequoia • Shi'Kahr • Sierra • Siva • Solar • Sovereign • Soyuz • Springfield • Steamrunner • Surak • Sydney • Venture • Tangent • Theophrastus • Thomas Paine • Thucydides • Thufir • Ticonderoga • Tikopai • Tritium • Typhon • Ukora • Ulysses • Ural • Utah • Vesta • Vigilant (scout) • Vigilant (tactical escort) • Voyager • Wambundu • Wilkerson • Wei-Fa • Wellington • Wells • Yamato • Yorkshire • Zodiac • unnamed
By type	Federation cargo ship • Federation colony ship • Federation construction ship • Federation galaxy ship • Federation light cruiser (Intrepid-variant) • Federation mining freighter • Federation repair ship