For other uses, see J class starship.

The Class J starship was a type of Federation starship in use by Starfleet in the 23rd century. A large design that rivaled the Constitution-class in size, it was considered old by 2266. Starfleet continued to use ships of the type for a Starfleet Academy training missions, despite the feeling of some officers, such as Commodore José Mendez, that Starfleet should decommission them. (TOS comic: "Captain's Log: Pike", TOS novel: Burning Dreams)

Although most Class J vessels had been decommissioned by the 2260s, Starfleet Command began a mass recommissioning of the class in 2267 as part of the effort to make Starfleet ready for the upcoming conflict with the Klingon Empire. (TOS novel: Demands of Honor)

Commodore Mendez identified and reported a number of structural flaws in the vessels, including the dangerously insufficient radiation safety systems in the engineering spaces. The engineering blast doors were too far down the connecting corridors to prevent radiation from spreading through the ships' Jefferies tubes and turbolift shafts. The ships were poorly designed. (TOS novel: Burning Dreams)

Known vesselsEdit

• USS Exeter

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

External linkEdit

• Class J starship article at Memory Alpha, the wiki for canon Star Trek.