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The Constitution class was a type of heavy cruiser that saw service in the Federation Starfleet during the 23rd century. The class served for several decades and underwent an extensive refit in the 2270s. By the mid-24th century the class was no longer in active service.

The workhorse of Starfleet, the Constitution class was probably the most balanced, all-around starship known in the 23rd century. In combat, this ship relied on its toughness and on the flexibility of its power usage. This ship incorporated several incremental improvements (i.e. refits) which kept it competitive throughout the long history of the class. (Star Fleet Battles)

Development history

In 2236, the United Federation of Planets and Starfleet celebrated their 75th anniversaries. A new class of "supercruiser" was proposed that would eventually become the Constitution-class starship. (The Starfleet Museum: Museum Timeline)

In the continuity of Star Fleet Starship Recognition Manual: Report: Constitution Heavy Cruiser, what was classified under the term Project Starship began as early as 2222.

USS Constellation and USS Republic had been converted from older classes of starships, and were used as testbeds for evolving technologies over a 20-year period.

Refit

In the early 2270s the Constitution class underwent a refit with newer technology that also saw a change in its general appearance. The saucer section was redesigned as well as the secondary hull, particularly the area around the navigational deflector. (Star Trek: The Motion Picture)

Enterprise subclass

The Enterprise-subclass of Constitution-class heavy cruisers debuted in 2271 and were among the first Federation starships outfitted with linear warp drive. (Star Trek: The Motion Picture; Ships of the Star Fleet, vol. 1 [revised])

Eight of the twelve starships of this subclass were refits:

USS Challenger, USS Daniel Soule and USS Jamestown were newly built ships.

USS Kitty Hawk's status, whether refit or new-built, hasn't been ascertained.
The TOS novel My Enemy, My Ally states that the replacement USS Intrepid, commanded by Captain Suvuk, had some of the improvements of the Enterprise subclass refit before the Enterprise itself was launched.

Retirement

The Constitution-class heavy cruisers were retired in 2334. (The Starfleet Museum: Museum Timeline)

See also

Constitution-class starships
Conversions: USS Constellation - USS Republic
Prototype: USS Constitution
Block I (2240s): USS Enterprise - USS Excalibur - USS Exeter - USS Farragut - USS Hood - USS Intrepid (NCC-1631) - USS Intrepid (NCC-1708) - USS Kongo - USS Lexington - USS Potemkin - USS Valiant - USS Yorktown
USS Agincourt - USS Ahwahnee - USS Cayuga - USS New Jersey - USS Constitution-A - USS Defiant - USS Emden - USS Hornet - USS John Paul Jones - USS Monitor - USS Shinsoku - USS Valley Forge - USS Zimbabwe
Modified: USS Asimov - USS Cantabrian - USS Challenger - USS Challenger-A - USS Eagle - USS Endeavour - USS Enterprise - USS Enterprise-A - USS Gibraltar - USS Indomitable - USS Intrepid (NCC-1708) - USS Intrepid II (NCC-1730) - USS Intrepid (NCC-1738) -USS Isshasshte - USS John F. Kennedy - USS Lexington (NCC-1709) - USS Nomad - USS Ortisei - USS Potemkin - USS Spectre - USS Storm - USS Surak - USS Tao Feng
Kelvinverse: USS Isis
Mirror universe: USS Defiant - ISS Enterprise - DSS Enterprise - ISS Lexington - ISS Thunderwolf
Subclasses: Achernar - Bonhomme Richard - Constitution - Constitution (II) - Constitution Delta - Endeavour - Enterprise - Enterprise (II) - James Watt (aka Constitution X) - Tikopai - Vesper
Constar Completed: USS Isis
The Lexington Adventures: USS Leyte
The Neutral Zone: USS Cherokee - USS Pegasus
Starship Valiant: USS Valiant
Starfleet International: USS Alan Turing - USS Altair - USS Antares - USS Ari - USS Armageddon - USS Challenger-A - USS Constellation - USS Constitution - USS Czar'ak-A - USS Defiance - USS Essex - USS Europe - USS Exeter - USS Farragut-A - USS Heimdal - USS Horizon-A - USS Hornet - USS Intrepid II (NCC-1730) - USS Jamestown - USS Kestral - USS Kitty Hawk - USS Maelstrom - USS Nomad - USS Potemkin - USS Riverside - USS San Juan - USS Sol - USS Storm - USS Sun Tzu - USS Venture - USS Vindicator - USS Wasp - USS Yorktown
The Starfleet Museum: USS Argus - USS Ari - USS Ark Royal - USS Arromanches - USS Bonaventure - USS Bonhomme Richard - USS Bunker Hill - USS Clemenceau - USS De Gaulle - USS El Dorado - USS Foch - USS Glory - USS Implacable - USS Jeanne D'Arc - USS Kiev - USS Krieger - USS Lafayette - USS Lion - USS Magnificent - USS Minsk - USS Ranger - USS Saratoga - USS Shokaku - USS Theseus - USS Tori - USS Triumph - USS Valiant - USS Vikrant - USS Virginia - USS Warrior - USS Wasp - USS Zuikaku
Star Trek: Nature's Hunger: USS Crusader - Star Trek: Pioneer: USS Justice
Trekmania: USS Agamemnon - USS Ajax - USS America - USS Anchorage - USS Atlantis - USS Cochrane - USS Constantinople - USS Daystrom - USS Gagarin - USS Galaxy - USS Halcyon - USS Hera - USS Icarus - USS Iridon - USS Liberty - USS London - USS New Orleans - USS Pacific - USS Pioneer - USS Prospector - USS Retainer - USS Shield - USS Swift - USS Sydney - USS Trident - USS Venture - USS Visionary - USS Wellington


External links