Jefferies class

For other uses, see Jefferies.

The Jefferies class^[2] was a 23rd century Federation starship type, a heavy cruiser^[1] and later legendary miracle worker light cruiser^[2] class in Starfleet service in the 2270s^[1]^[5] and 2410s^[4] decades. The Jefferies class was a variant subclass of the Constitution-class cruiser. Among Constitution-class variants, it stood out by having the ship's registry number painted in large letters on either side of the secondary hull. (STO - J'Ula's Discovery mission: "Welcome to Earth Spacedock", TOS - Waypoint comic: "The Fear")

History and specifications[]

proposal, . — *Constitution*-class refit proposal, 2271.

The USS Jefferies (NCC-1750) was active by stardate 2821.5 in the year 2267. It harbored a teardrop-shaped variant of the Class F shuttlecraft. (ST calendar: Ships of the Line 2017)

By the year 2270, Starfleet was drawing plans for refit configurations of the Constitution-class heavy cruiser. A future Constitution-class ship encountered by the USS Enterprise around stardate 6251.1 was the 25th century Nautilus. While the Enterprise crew at first assumed the Nautilus matched the configuration of their own ship, Commander Spock noticed futuristic features, like shortened warp nacelles. (TOS novel: Crossroad)

After the Constitution-class heavy cruiser USS Enterprise returned from its historic five-year mission in 2270, one idea of an extensive refit included the Phase II concept, with a projected launch in 2271. The design was notable for the prominent registry number painted on either side of the secondary hull, and the use of square warp nacelles on an Enterprise. (The Official Starships Collection Issue Bonus 8: "USS Enterprise Phase II")

The Enterprise was instead refitted to Enterprise-class configuration, and launched after 2.5 years of work in 2273. (TOS movie & novelization: The Motion Picture)

In 2275, the Constitution-class heavy cruiser USS Intrepid (NCC-1631) had been refitted into the configuration with shorter warp nacelles. (TOS - Rihannsu: The Bloodwing Voyages novel: My Enemy, My Ally)

In 2285, the Mark IV bridge simulator at Starfleet Academy replicated the bridge of the Enterprise-class USS Enterprise. Console readouts showed the Jefferies-class configuration instead. (TOS movie: The Wrath of Khan)

Late in 2410, Starfleet revisited several "iconic" starship classes with upgrades to match them with the newest starship designs. These were called legendary starships. (STO website: Legacy: 10th Anniversary Legendary Starship Bundles)

Following the Battle of Excalbia in early 2411, which saw the prominent involvement of hero ships from the Federation's past and present, the newly-minted Jefferies-class was added to the lineup of tier 1, tier 2 and tier 6 cruisers. (STO - Legacy missions: "Measure of Morality (Part 2)", "Welcome to Earth Spacedock")

Alternate timelines[]

In the Phase II continuity, the Jefferies-class Enterprise was relaunched in 2271 and visited Earth. (The Official Starships Collection Issue Bonus 8: "USS Enterprise Phase II")

Zhang Sui leaves Enterprise shuttlebay. — *Zhang Sui* leaves *Enterprise* shuttlebay.

This Enterprise was equipped with small, aerodynamic shuttlecraft, including Phase II shuttle Zhang Sui. (The Official Starships Collection Issue Bonus 19: "Phase II Concept")

The USS Enterprise commenced a second five-year mission under Captain James T. Kirk in 2273. Soon after, a Romulan scout ship crashed into the saucer section. The situation was defused by Captain Kirk and science officer Xon, though the Romulan crew committed suicide. (TOS - Waypoint comic: "The Fear")

Livery[]

In the 25th century, the hull design of the Jefferies-class miracle worker light cruiser allowed its commanding officer to choose from different livery materials. These could be modified at Starfleet Shipyard Operations and Khitomer Alliance shipyard interfaces. The material options included upgrade, veteran, and numbered types.

The standard outfit included a recessed deflector dish, similar to the Enterprise-class. The Beta configuration featured the extended dish of the 2260s-era Constitution-class. (STO - J'Ula's Discovery mission: "Welcome to Earth Spacedock")

Furthermore, the installation of deflector 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[]

USS Enterprise (NCC-1701), Phase II continuity^[5]
USS Enterprise (NCC-1701), 25th century^[2]^[4]
uncertain:

Appendices[]

Connections[]

Variants and sub-classes of the Constitution-class starship
	Constitution-class (mk I) • Bonhomme Richard-class (mk II) • Achernar-class (mk III) • Tikopai-class (mk IV) • Enterprise-classes (mk I-III refits) • Excalibur-class (24th century) • Vesper-class (24th century) • Exeter-class (25th century) • Kirk-class (31st century) • Constitution-class (Kelvin timeline) • Constitution-class (mirror universe)

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 • Gral • 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 • Rubin • 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 II • 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

Appearances and references[]

Jefferies class article at Memory Alpha, the wiki for canon Star Trek.

[USS_Enterprise_Phase_II-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 The Official Starships Collection Issue Bonus 8: "USS Enterprise Phase II"

[Legendary_Starship-2] 2.0 ^2.1 ^2.2 ^2.3 STO website: Legacy: 10th Anniversary Legendary Starship Bundles

[My_Enemy,_My_Ally-3] 3.0 ^3.1 TOS - Rihannsu: The Bloodwing Voyages novel: My Enemy, My Ally

[Welcome_to_Earth_Spacedock-4] 4.0 ^4.1 ^4.2 ^4.3 ^4.4 ^4.5 ^4.6 ^4.7 ^4.8 STO - J'Ula's Discovery mission: "Welcome to Earth Spacedock"

[The_Fear-5] 5.0 ^5.1 ^5.2 TOS - Waypoint comic: "The Fear"

[Phase_II_Concept-6] The Official Starships Collection Issue Bonus 19: "Phase II Concept"

[SOTL_2017-7] SOTL calendar: Ships of the Line 2017

[Crossroad-8] TOS novel: Crossroad

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