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Canon Facts Backstage Info  Speculation
Type
Enhanced Scientific/Diplomatic Explorer
Unit Run
USS Cheyenne NCC 71620 USS Ahwahnee
plus 134 vessels built since 2345. 106 were lost during the Dominion war; 30 remain in service.
Commissioned
2345 - 2352
Dimensions
Length : 394 m
Width : 250 m
Height : 113 m
Decks : 20 excluding nacelle engineering spaces
Mass
900,000 tons
Crew
245
Armament
2 x Type VIII Phaser arrays, total output 7,500 TeraWatts 
2 x Type 2 burst fire photon torpedo tubes + 50 torpedoes
Defence Systems
Shield system, total capacity 364,500 teraJoules
Standard Duranium single hull
Standard level Structural Integrity Field
Warp Speeds
(TNG Scale)
Normal Cruise : Warp Factor 6
Maximum Cruise : Warp Factor 9
Maximum Rated : Warp Factor 9.4 for twelve hours
Strength Indices
(Galaxy class = 1,000)
Beam Firepower : 150
Torpedo Firepower : 800 
Weapon Range and Accuracy : 155 
Shield Strength : 135
Hull Armour : 10
Speed : 890
Combat Manoeuvrability : 9,100
Overall Strength Index
385
Grade 4
Expected Hull Life
60 years
Refit Cycle
Minor : 1 year
Standard : 5 years 
Major : 25 years

Notes : The Cheyenne project was approved in 2338 as a scoutship to counterpart the New Orleans class Frigate and the upcoming Galaxy and Nebula class Explorers. As with most scouts the Cheyenne was intended to be somewhat faster than its contemporaries in order to allow it to travel out ahead of the main body of a fleet. In order to accomplish this, the Cheyenne was fitted with four nacelles in the pattern established by the much earlier Constitution class.

Initially, all did not go well with the Cheyenne. Starfleet has relatively limited experience with four nacelle designs, and a good deal of difficulty was experienced with the warp field geometry. Eventually these problems where overcome and the USS Cheyenne, launched in 2344, achieved a maximum speed of Warp 9.4 in trials. However, in December of 2344 the Galaxy project received new specifications calling for a top speed of Warp 9.6. With the prototype about to enter service and five more ships under construction, it was already too late to make any serious attempt to improve the top speed of the Cheyenne, so Starfleet was forced to bring a scout into service which was some 10% slower than the vessels it was supposed to work with.

Over the succeeding years several attempts where made to bring the speed of the Cheyenne up to Warp 9.7, but problems with the field geometry began to re-surface with alarming regularity. This culminated with a test on board the USS Ahwahnee; when a new computer control system was tried out the ship created a wormhole effect on its first test flight. Although the Ahwahnee survived and there where no casualties, the subspace stress caused severe cracking in the hull structure of all four nacelle struts. The ship was in spacedock for over a year while the struts where replaced. Starfleet suspended production of the class in 2352 after twenty five had been commissioned, mothballing the six ships under construction.

The Cheyenne has proved less than successful in service. Her relatively low speed has restricted her performance in her designed role, and she has been forced to operate in the role of a Frigate. She is not especially suited to this task - certainly not when compared to the New Orleans class which was purpose designed for the role. As a result the Cheyenne's have been given a very low priority for refits and upgrades, and have fallen considerably behind the rest of Starfleet in this respect.

With the advent of more modern scout ships such as the Intrepid, the Cheyenne was to be gradually retired from service. The increase in hostility in the alpha quadrant over the last ten years has led to this decision being reversed, and the Cheyenne's have played a small part in recent conflicts. The most notable contribution was Wolf 359, in which the USS Ahwahnee was destroyed by the Borg.
 


Last updated : 6th February 2000.
This page is Copyright Graham Kennedy 1998.

Star Trek et al is Copyright Paramount Pictures 1996/97.
No Copyright  infringement is intended and this page is for personal use only.
All  of the above classes of star ships and all of the
named ships are copyright Paramount 1996/97.