The Mogai class was introduced into service in the late 2370's most in response to the Klingon Negh'Var-class and the Federation Sovereign-class starships which the Romulan Star Empire saw as threats. The most advanced Warbird ever created it is similar in design to the D'deridex-class warbird, a large, fixed-wing vessel, ranging in color from dark-green to brown. With a wingspan roughly 900 meters wide, the vessel featured a large section extending forward to create a down-sloped head shape. Warp nacelles were connected at the end of each wing with impulse engines mounted aft. The hull was marked by distinctive "feather" shaped plating. It was also one of the first Romulan vessels equipped with a stream fire torpedo launchers, allowing the rapid fire of up to four torpedoes at once.
| Deck | Description |
|---|---|
| 1 | Bridge, Commanders Ready Room, Observation Lounge, Airlock |
| 2 | Commanders Quarters, Sub Commanders Quarters, Emergency Batteries, Weapons Locker, Command Staff Dining Room |
| 3 | Senior Officers Quarters, Communications Library, Main Conference Room, Pangaere na |
| 4 | Officers' Quarters, Enlisted Quarters, VIP Quarters, Transporter Rooms 1 & 2, Emergency Batteries, Life Support, Environmental Control, Control Head Office |
| 5 | Reman Master/Mistress Office, Brig, Armory 1, Reman Commando Training Facilities, Tal Diann Office, Tal'Shiar Office, Protocol Officers Office, Aft Tactical Sensors, Crew Quarters, Environmental Support Systems, Cargo Bay 1 |
| 6 | Main Computer Core (Level 1), Main Computer Core Control, Main Shuttlebay, Flight Control Room 1, Primary Systems, Diplomatic Facilities, Enlisted Quarters, Holodecks 1 & 2 |
| 7 | Main Computer Core (Level 2), Main Shuttlebay, Secondary Systems, Astrometrics, Stellar Cartography, Science Labs, Sciences Head Office, Psychiatrist's Office, Ship's Library, Enlisted Quarters |
| 8 | Main Computer Core (Level 3), Impulse Assembly, Fusion Reactors, Main Sickbay, Leader of Medical Sciences Office, Weapons Locker, Engineering Lab, Shuttlebay Elevators, Upper Shuttle Maintenance & Storage, Forward Tactical Sensors |
| 9 | Main Computer Core (Level 4), Impulse Engines, Impulse Driver Assembly, Singularity Core Subsystems, Lower Shuttle Maintenance & Storage, Dorsal Docking Port, Emergency Transporters, Enlisted Quarters |
| 10 | Impulse Assembly, Fusion Reactors, Auxiliary Fusion Reactor, Shuttle Repair & Machine Shop, Engineering Support Area, Industrial Replicators, Reman Barracks, Commando HQ, Armory 2, Holodeck 3, Waste Management/Recycling Center, Cargo Bays 2-5 |
| 11 | Auxiliary Deflector Controls, Shuttle Elevator Assembly, Airlock, Reman Barracks, Crew Quarters, Transporter Rooms 3 & 4, Airlocks, RCS Thrusters |
| 12 | Auxiliary Deflector Array, Primary IDF Generators, Primary SIF Generators, Primary Shield Generators, Systems Support Compartment, Maintenance Bay 1 |
| 13 | Plasma Torpedo Launcher Access, Torpedo Storage, Main Sensor Array, Deuterium Tanks, Power Distribution Subsystems, Mess Hall (Aft), Maintenance Bay 2 |
| 14 | Deuterium Tanks, Shuttlebay 2, Flight Control Room 2, Power Distribution Systems, Turbolift Maintenance |
| 15 | Secondary Computer Core (Level 1), Shuttlebay 2, Shuttle Storage, Graviton Generators 1 & 2, Weapons Locker, Main Power Transfer Conduits, Transporter Room 5, Cargo Bays 6 & 7 |
| 16 | Secondary Computer Core (Level 2), Secondary Cloaking Device Power Generator, Graviton Generators 3 & 4, Main Navigational Deflector, Deflector Control, Main Engineering, Singularity Core, Control Head's Office, Weapons Locker, Main Power Transfer Conduits, Warp Nacelle Access, Cargo Bays 8 & 9, Emergency Transporters |
| 17 | Secondary Computer Core (Level 3), Aft Sensor Array, Cloaking Device, Graviton Generators 5 & 6, Deflector Assembly, Secondary Plasma Vent, Emergency Transporters |
| 18 | Graviton Generators 7 & 8, Deflector Assembly, Auxiliary Shield Generators, Multi-purpose Chamber (Upper), Crew Quarters |
| 19 | Lateral Sensors, Secondary Communications Array, Emergency Graviton Generators (2), Emergency Batteries, Complementary Deflector Assembly, Forward Torpedo Launchers (2) |
| 20 | Primary Communications Array, Tractor Beam Assembly, Turbolift Maintenance, Forward Tractor Beam Emitter, Secondary IDF Generator, Secondary SIF Generator |
| 21 | Tractor Beam Assembly, Secondary Sensor Array, Sensor Analysis Suite, Torpedo Magazine, Maintenance Bay 3, Cargo Bay 10 (Upper) |
| 22 | Tractor Beam Assembly, Aft Tractor Beam Emitter, Aft Torpedo Launchers (2), Torpedo Magazine, Cargo Bay 10 (lower), Singularity Core Jettison Hatch |