The decks of a Defiant-class Federation starship. There were five decks.
- Deck One (DS9: "Paradise Lost")
- Main bridge (DS9: "The Search, Part I")
- Captain's ready room (DS9: "Valiant", "The Sound of Her Voice")
- Transporter room One (DS9: "Past Tense, Part I")
- Phaser cannons (2) (DS9: "The Search, Part I", "Shattered Mirror")
- Upper main engineering (DS9: "Rejoined")
- Plasma Exhaust Vents (DS9: "One Little Ship")
- Upper sensor array
- Officer and Crew Quarters (DS9: "Valiant", "The Sound of Her Voice")
- Deuterium storage tanks
- Deck Two (DS9: "The Way of the Warrior", "Starship Down", "Valiant")
- Computer core
- Lower Main Engineering (DS9: "The Adversary")
- Main impulse engines
- Mess hall (DS9: "To the Death", "Trials and Tribble-ations", "Valiant")
- Officer and Crew Quarters
- Sickbay (DS9: "Broken Link")
- Section 2: Engine room (DS9: "One Little Ship")
- Targeting sensors
- Transporter Room Two (DS9: "Call to Arms")
- Warhead control room (DS9: "Starship Down")
- Warp coils
- Deck Three (DS9: "The Way of the Warrior", "Paradise Lost", "Valiant", "The Changing Face of Evil")
- Aft Torpedo Magazine
- Airlocks (2)
- Antimatter Storage
- Cargo bay 1-4
- Section 15: Crew quarters (DS9: "Meridian", "Defiant")
- Main Impulse Engines
- Shuttlebays 1-3
- Warhead Impulse Engines
- Warp Coils
- Shuttle and workbee maintenance
- Deck Four (DS9: "Paradise Lost", "Valiant", "The Changing Face of Evil")
- Landing struts
- Navigational deflector
- Pulse Phaser Cannons (2) (DS9: "Defiant", "Paradise Lost", "For the Uniform"; VOY: "Message in a Bottle")
- Forward and Aft Torpedo Magazines (DS9: "Defiant", "For the Uniform")
- Aft torpedo launchers (2) (DS9: "Defiant", "For the Uniform")
- Forward Torpedo Launcher (1) (DS9: "Defiant", "For the Uniform")
- Lower Sensor Array
- Shuttlebay 1-2 exterior Doors and Elevator System (DS9: "The Sound of Her Voice")
- Main tractor beam emitter
- Deck Five (DS9: "The Way of the Warrior", "Rejoined")
- Section 1 (DS9: "To the Death")