Galaxy class

 
Overview
 
Affiliation United Federation of Planets
Used by Starfleet
Type Explorer
Designing phase 2343-49
Prototyping phase 2346-57
Operational phase 2357-
Construction yard Utopia Planitia Fleet Yards (Mars)
Ships constructed 19
Description Multi-mission explorer introduced in the middle of the 24th century that is mainly used  for scientific, diplomatic and combat missions. The Galaxy class was designed to be both a successor and replacement to the older Oberth and Ambassador classes.  The special features of this class are the modular structure (modules can be exchanged or added), its enormous size and the possibility to separate the vessel into two completely independent ships  the saucer module and drive section.  After the 15 year long application phase of the Galaxy class, the ships are used for military tasks today  because of their unsurpassed defensive capability. However, the Galaxy class cannot compete with the smaller and more maneuverable vessels of the Intrepid and Sovereign classes any longer.
 
Ships constructed
   
Name           Registry number Commissioned Used until
USS Galaxy (prototype) NX-70637 2357
USS Challenger NCC-71099 2360
USS Yamato NCC-71807 2361 2364
USS Enterprise NCC-1701-D 2363 2371
USS Odyssey NCC-71832 2360s 2370
USS Venture NCC-71854 2360s
USS Trinculo NCC-71867 2360s
USS Magellan
 
History
 
2343    
   July The Galaxy project is approved after long sessions of theoretical and preliminary work by the Advanced Starship Design Bureau (ASDB). Of twelve ships that were planned, six  were built in the Utopia Planitia Fleet Yards, however, the others were only constructed up to the spaceframes, to be completed when necessary.
   SD 20511 Starfleet determines the required performance data of the propulsion systems.
2344 
   SD 21979 The required performance data of the propulsion systems are substantially increased because of political changes and prognoses, but also due to improved materials and further modifications, which reduce the predicted ship's mass by almost 24 percent.
2356
   SD 33342 The first spaceworthy version of the Galaxy class prototype, the USS Galaxy (NX-70637) is completed.
2357  The USS Galaxy is the first ship of its class to be put into active service.
2366  After 39 ships have been destroyed by the Borg, Starfleet continues the construction of the additional Galaxy class spaceframes to six more spaceworthy starships of this class as part of the rebuilt of the fleet.
  
Technical specifications
   
Dimensions Length 642.5 m, width 467 m, height 137.5 m
Mass 4.96 Mt
Structure Elliptical saucer module with a separable stardrive section and two warp nacelles
Deck count 42
Computer systems 3 cores; isolinear
Propulsion systems
  Warp drive Highest sustainable speed warp 9.2, maximum speed warp 9.6
  Impulse drive 3 impulse engines, maximum speed 0.92c
  Maneuvering drive 12 RCS thrusters
Weapon systems 14 phaser banks, 3 photon torpedo launchers (max. 275 torpedoes)
Defensive systems Deflector shields, metaphasic shielding
Other systems Tractor beam emitters, holodecks