The Defiant-class starship, officially an escort, began development in 2366 as a small, highly-powered, heavily-armed warship intended to defend the Federation against the Borg.
Specifications from ST-Intelligence
Description from Memory Alpha.
Modifications by Edwards.
|1||Main Bridge, Captain's Ready Room, Transporter Room 1, Phaser Turrets (2), Upper Main Engineering, Plasma Exhaust Vents, Upper Sensor Array, Officer and Crew Quarters, Antimatter Storage/Injectors, Warp Core Ejection Hatch|
|2||Lower Main Engineering, Main Impulse Engines, Computer Core (Level 1), Targeting Sensors, Torpedo Magazines, Forward Torpedo Launchers (2), Mess Hall, Warp Coils, Med/Science Lab, Sickbay, Transporter Room 2, Officer and Crew Quarters, Deflector Control Room|
|3||Main Impulse Engines, Shuttle Maintenance and Shuttlebay Elevator System, Computer Core (Level 2), Deuterium Storage/Injectors, Cargos Bays 1-4, Torpedo Magazine, Warp Coils|
|4||Landing Struts, Navigational Deflector, Phaser Turrets (2), Aft Torpedo Launcher, Probe Launcher, Lower Sensor Array, Shuttlebay Exterior Doors and Elevator System, Tractor Emitters, Warp Coils|
b Nacelle Maintenance Access.