Defiant Class

From Bravo Fleet Infobase

Federation Faction


Class Information
Role: Escort


Date Entered Service:


Fourth Fleet Ships in Service:

View On BFMS

Ship's Complement
Crew Complement:


Overall Dimensions


Warp Performance
Cruising Speed:

Warp 7

Energy Weapons:
Torpedo Launchers:

3 Launchers


Multi-Layered Shielding System

Auxiliary Craft

Class Description

USS Defiant firing its phaser cannons

During the course of the 2360s the Federation had seen it's fair share of increasing threats directly to the safety of its core territories; the reemergence of the Romulan Star Empire, disastrous first contact and subsequent hostilities with the Borg Collective and growing threats as a result of increased exploration abroad. After the extreme loss of life at the Battle of Wolf 359 Starfleet insisted that it was in need, for the first time in its history, of a dedicated tactical warship. Starfleet tasked the engineers at Utopia Planitia Fleet Yards with designing such a vessel, which would be small and maneuverable, with Starfleet's latest defensive and offensive tactical systems.

Type 11 Shuttle pod exiting the shuttle bay of a Defiant Class vessel

In 2366, the engineering crew drafted a design that incorporated many new experimental technologies, including ablative hull armor, regenerative shielding and a new pulse-style phaser design while remaining small, compact and able to out maneuver most other ships in the quadrant. The Defiant Class was quickly shaping up into being one of the most powerful designs Starfleet had ever conceived, especially for a ship of its size, but suffered in other areas of design. The Defiant only had limited scientific capabilities, barely any medical facilities other then for battle triage and the crew accommodations were spartan at best. Engineers decided that with the limited nature of the Defiant's mission and role design that those problems wouldn't be critical flaws. The space frame and hull for the prototype, USS Defiant NX-74205, was laid down after over a year of design and began construction in 2368. Commander Benjamin Sisko, a veteran of the Borg attack of Wolf 359 a year earlier, was made the project lead as construction began. Construction took a little under four months and the shakedown cruise began. Some design flaws soon became obvious, including the Defiant's inherent ability to nearly tear itself apart due to over powered engines for a ship of its size.

Due to the critical flaw in the ships engines and the apparent subsiding of the Borg threat the USS Defiant was put into dry dock storage until engineers could figure out how, if at all, they could rework the ships engines. In 2371 the Defiant was pulled out of storage at the request of its former project lead, Commander Sisko, who was now commanding space station Deep Space 9. The need for a ship to help combat the growing threat of the Dominion in the Gamma Quadrant required the ship's flaws to be refitted and repaired in the field. Throughout the coming months chief engineer Miles O'Brien and Sisko were able to modify the ship's main pulse phaser systems and its engines to allow for free flow of power throughout the ship and mostly eliminate the problem of the ship tearing itself apart, although if pushed too far the ship could still pose a risk to itself. The original launch design was equipped with a photon torpedo compliment of almost 120 torpedoes, but was refitted with the new quantum torpedoes and, with more limited space on the ship, it's compliment was lessened to 90 torpedoes. Still, it more then enough for any mission the Defiant could be sent on.

After the successful testing of the USS Defiant in the field under the command of Sisko, and the growing threat of the Dominion, nearly 200 ships of the class were scheduled to go into production. During the conflict with the Dominion, nearly 50 of the class were able to be launched before the Romulans joined the war and it subsequently ended. At that time the remaining ships in production were either completed or scrapped for other exploration-designed ships, depending on how far into construction they were. With the Federation returning Starfleet's efforts to that of exploration and discovery, the Defiant Class found itself going from the front lines as an "escort" to finding itself assigned to frontier outposts and high-risk targets. Still in limited numbers, with under 60 in service, the Defiant Class starships that are active, few and far between, are considered jewels in combat and are reserved for the possibility of war ever breaking out again and to combat the ever-looming Borg threat.

Ship Specifications

Basic Information
  • Role: Escort
  • Dimensions: 119.5 meters (L) x 80.4 meters (W) x 18.8 meters (H)
  • Decks: 5
  • Expected Duration: 55 years
  • Time Between Resupply: 3 months
  • Expected Refit Cycle: 4 years
Crew Complement
  • Total Crew: 50
    • 15 Officers
    • 35 Enlisted

  • Thrusters: RCS Thrusters
  • Sublight Speed: 0.25c
  • Warp Speed
    • Cruising Speed: Warp 7
    • Maximum Warp: Warp 9
    • Emergency Warp: Warp 9.5 (for 8 hours)
  • Slipstream Capable?: Yes
Offensive Systems



  • 2 Forward
  • 1 Aft


Defensive Systems
Primary Systems
  • Computer Systems:

Isolinear Computer Systems

  • Transporters:

1 three-man transporter

    • Transporter Range: 45,000 Kilomters
  • Sensor Range: 20 light years
  • Communications Range: 20 light years
Auxiliary Craft



  • Shuttles: 2

Other Notes


Deck Listing

Deck Details/Specifications of Deck
Deck 1
  • Bridge
  • Captains ready room
  • Transporter room
  • Deuterium tanks
  • Deuterium injectors
  • Upper pulse cannons (port and starboard)
  • Upper sensor pallets, Officers quarters
  • Main engineering upper level.
Deck 2
  • Engineering Main level
  • Computer core upper level
  • Enlisted quarters
  • Mess hall, Sick bay
  • Medical/Science labs
  • Impulse engine upper level
  • Forward targeting sensors
  • Forward torpedo launchers
  • Torpedo storage
  • Transporter room 2
Deck 3
  • Computer core lower level
  • Forward docking port
  • Impulse engine lower level
  • Brig
  • Aft torpedo launcher
  • Torpedo storage
  • Warhead impulse engines
  • Environmental systems
Deck 4
  • Shuttle bay
  • Cargo bay
  • Replicator consumables storage
  • Antimatter storage pods
  • Antimatter pod ejection hatch
  • Antimatter injectors
  • Warp core ejection hatch
  • Deflector dish
  • Torpedo storage
Deck 5
  • Waste management
  • Landing struts
  • Lower pulse cannons
  • Lower sensor platform
  • Warhead torpedo launcher

Active Simulations

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