Defiant (class)

• Escort (DS9: "The Search, Part I")
• History
  • Initial designs begun 2366 in response to Borg threat for small, heavily-armed warship that could be produced quickly (DS9TM; DS9: "The Search, Part I")
  • Initial construction: Mid-2366, Utopia Planitia Fleet Yards, Mars (DS9: "The Search, Part I")
  • First commissioned: Mid-2366, USS Defiant (NX-74205)
    • First launched 2367
    • Early shakedown tests demonstrated numerous design flaws
    • Vessel mothballed following various performance failures
  • Vessel relaunched: May 2371 (DS9: "The Search, Part I")
    • On request of Commander Benjamin Sisko as support vessel for Starbase Deep Space 9 in response to growing Dominion threat (DS9: "The Search, Part I")
    • Field success with correcting design flaws of USS Defiant led to resumption of construction
• Statistics
  • Length: 170.7m (DS9TM)
  • Width: 134.1m (DS9TM)
  • Height: 30.1m (DS9TM)
• Mass: 355,000mt (DS9TM)
• Crew: 40 (DS9TM, DS9 Novel: Avatar, Book One)
• Cruising speed: Warp 6 (DS9TM)
• Maximum speed: Warp 9.982 for 12 hours (DS9TM)
• Armament
  • 4x pulse phaser cannons (DS9TM)
  • Torpedo launcher, 2x forward, 1x aft (DS9TM)
  • Forward warhead (DS9TM)
    • Emergency last-resort unit (DS9 Novel: Avatar, Book One)
    • Equipped with six photon torpedo warheads, independent impulse engine and power supply (DS9 Novel: Avatar, Book One)
• Computer system has maximum capacity of 240 megaquads (DS9 Novel: Mission Gamma: Cathedral)
• Layout
  • 4 decks
    • Deck 1
      • Bridge
      • Captain's ready room
      • Transporter room 1
      • Phaser cannons
      • Upper sensor array
      • Crew quarters (DS9 Novel: Mission Gamma: Lesser Evil)
      • Deuterium storage
    • Deck 1-2
      • Main engineering
    • Deck 2
      • Main impulse engines
      • Mess hall (DS9 Novel: Mission Gamma: Lesser Evil)
      • Sickbay (DS9: "Broken Link")
      • Science laboratory
      • Transporter room 2
      • Crew quarters
      • Warhead control room (DS9 Novel: Avatar, Book One)
    • Deck 2-3
      • Computer cores, port and starboard (DS9TM; DS9 Novel: Mission Gamma: Twilight)
    • Deck 3
      • Shuttlebay
      • Cargo bay 1-4
      • Aft torpedo magazine
      • External airlock access
      • Antimatter storage
    • Deck 4
      • Navigational deflector
      • Phaser cannons
      • Lower sensor array
      • Main tractor beam emitter
      • Torpedo launchers, fore and aft
      • Landing struts

Known ships

Defiant-class

Name	Registry	Service Begin	Service End
USS Defiant	NX-74205	2371-05	2375-08-13
USS Defiant (NCC-74205-A)	NCC-74205-A	2374	(2384)
USS Valiant (NCC-74210)	NCC-74210	(2373)	2374
USS Saladin (NCC-74350)	NCC-74350	(2375)	2381
USS Neptune		(2376)	2376
USS Ajax		(2381)	2381
USS Alexey Leonov		(2381)	2381