Return to Database
Defiant Class
TYPE
Destroyer
COMMISSIONED
2367 - present
UNIT RUN
(NX 74206  USS Defiant)  •  NCC 75633  USS Sao Paulo  •  NCC 74210  USS Valiant
NX 74206-A  USS Defiant  •  NCC 77803  USS Xanadu  •  NCC 80801  USS Portland




Plus an additional 328 vessels.  The class remains in production.
DIMENSIONS
LENGTH: 170m
BEAM: 134m
HEIGHT: 70m

DECKS: 4
CREW
50; evacuation limit 150
ARMAMENT
4 x Class I rapid fire phaser pulse cannon
1 x Type X phaser bank, total output 70,000 TeraWatts
3 x Pulse fire transphasic torpedo tube
1 x Probe/torpedo launcher equivalent to standard quantum torpedo tube + 120 torpedoes
DEFENSE
Auto modulated shield system, total capacity 2,376,000 TeraJoules
Heavy Duranium/Tritanium Double hull +20cm ablative armor.
High Level Structural Integrity Field
PROPULSION
NORMAL CRUISE: Warp 6.0
MAXIMUM CRUISE: Warp 11.0
MAXIMUM SPEED: Warp 12.5 for 6 hours
STRENGTH INDEX
Galaxy Class = 1000
BEAM FIREPOWER: 1,400
TORPEDO FIREPOWER: 2,150
WEAPON RANGE/ACCURACY: 810
SHIELD STRENGTH: 880
HULL ARMOR: 3,400
SPEED: 955
MANEUVERABILITY: 8,660

OVERALL: 1,551
DIPLOMATIC GRADE
2
20 years
HULL LIFE
REFIT CYCLE
MINOR: 1 year
STANDARD: 1 year
MAJOR: 5 years
NOTES
The Defiant class was first conceived in 2365 in response to the newfound threat proffered
by the Borg.  The class incorporated several new design elements, including quantum
torpedoes, ablative hull armor, and pulse phaser canons; the design was intended to be
tough, simple to build, and possess the maximum amount of firepower possible.

The class, however, was overpowered to the point of dysfunction; the Defiant faced
problems with structural integrity and warp flight, and when the Borg attacked Wolf 359 in
early 2367, the Defiant was unable to participate in the battle.  With the Borg threat
somewhat lessened in the aftermath of Wolf 359, the Defiant project was summarily
abandoned in favor of the Sovereign Class.  

This changed in late 2370, when the USS Odyssey was destroyed during the disastrous first
contact with the Dominion in the Gamma Quadrant.  With the first Sovereign still years
from completion, Commander Benjamin Sisko requested the Defiant be assigned to station
Deep Space Nine to protect against a Dominion attack.  His request was granted, and after
several years of modifications, the Defiant's inherent problems were eventually resolved.  
The Federation was initially hesitant to sanction production of additional Defiant Class
vessels, given its status as a warship, however the advent of Dominion War erased all doubt
of the Defiant's capabilities.
ACKNOWLEDGEMENTS
The Defiant used throughout this site was created by Skye Dodds.


This page was created using information from the Daystrom Institute Technical Library
(www.ditl.org)