Defiant (class)

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  • 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