Ambassador class

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Class Information
Expected Duration: 80 years
Resupply Interval: 3 years
Refit Interval: 6 years
Type: Cruiser
Role: Explorer
Length: 526 meters
Width: 320 meters
Height: 125 meters
Decks: 36
Warp Rating
Cruising Speed: Warp 6
Maximum Speed: Warp 8.8
Emergency Speed: Warp 9.3 (for 12 hours)
Officers: 155
Enlisted: 550
Marines: 0
Passengers: 200
Evacuation Capacity: 6,000
Auxiliary Craft


Captain's Yachts:
Tactical Systems
Torpedo Launchers:
Torpedo Compliment:
Other Systems:
[ Source ]

The Ambassador-class is a class of Federation starship that was in service with Starfleet during the mid- to late twenty-fourth century.


General Overview

Developed as a compliment to the Excelsior-class, the Ambassador-class was Starfleet's primary instrument of exploration during the second quarter of the twenty-fourth century. The Ambassador-class was the first vessel to employ triple-redundant electro-plasma system (EPS) taps and collimated phaser arrays laid out on the hull in strips rather than in banks. Several of the second run Ambassador-class vessels were built to an improved specification including structural improvements and enlarged shuttlebay facilities.

The Ambassador-class served with distinction during the Cardassian War, but the introduction of the Galaxy-class in 2357 saw Ambassador-class vessels relegated to more routine work with only a relatively small number remaining in service by the late twenty-fourth century.

Famous vessels of the class include the USS Enterprise NCC-1701-C, launched in 2332 and destroyed while protecting the Klingon outpost at Narendra III in 2344, and the USS Excalibur NCC-26517.

Technical Data

Physical Arrangement

Deck Listing

Deck 1: Main Bridge, Captain's Ready Room, Observation Lounge, Weapons Locker, Primary Communications Array, Primary Sensor Array
Deck 2: XO's Office, Senior Officer's Quarters, CoB's Office, Conference Room , Officer's Mess, CIO's Office, Intelligence Center
Deck 3: VIP/Guest Quarters, Diplomatic Facilities, CDO's Office, Large Conference Room, Auditorium, Transporter Room 1, Holodecks 1-2, Security Station
Deck 4: Main Shuttlebay, Shuttle Maintenance Bay, CFCO's Office, Industrial Replicators 1&2, Cargo Bays 1-2
Deck 5: Computer Systems Monitoring Room, Main Computer Core (Level 1), Guest Quarters , Crew Quarters
Deck 6: Transporter Room 2, Main Computer Core (Level 2), Crew Quarters, Holodecks 3-4
Deck 7: Gymnasium, Natatorium, Mess Hall, Galley, Crew Quarters, Main Computer Core (Level 3), Conference Room 2, Secondary Tractor Beam Emitter
Deck 8: Crew Quarters, Child Care Facilities, School, Computer and Equipment Storage Bay, Main Computer Core (Level 4)
Deck 9: Primary Environmental Control, Crew/Passenger Quarters, Emergency Supply Storage, Secondary Deuterium Storage Tanks, Main Computer Core (Level 5)
Deck 10: Security Training Holodecks 1-3, Phaser Ranges 1-6, Armoury, CT/SO's Office, Brig, Secondary Communications Array
Deck 11: Primary SIF/IDF Generators, Holodecks 5 & 6, Crew/Passenger Quarters, Secondary Environmental Control
Deck 12: Replicator Control, Industrial Replicators 3-5, Sickbay, CMO's Office, Medical Supply Storage, Medical Labs 1+2, Medical Holodecks 1-5, Crew/Passenger Quarters
Deck 13: Stellar Cartography, Astrophysics, Astrometrics, Astrometric Sensor Arrays, Crew Quarters , General Purpose Science Labs 1-6
Deck 14: Sociology Department, Counsellor's Office, Customisable Science Lab 1, Chemistry Labs 1 & 2, Transporter Rooms 3 & 4, Crew Quarters
Deck 15: Particle Lab, Geology Lab, Biology Labs 1 & 2, Customisable Science Labs 2 & 3, Hazardous Material Storage, Containment Lab Suites 1 & 2
Deck 16: Plant Sciences Department, Arboretum, Botany Lab, Hydroponics Lab and Gardens, Main Impulse Engines, Fusion Reactors 1-9, Engine Control Room, Impulse Engine maintenance access, Captain's Yacht, Supply storage
Deck 17: Secondary Sickbay, Zoology Lab, Public Replicators, Customisable Science Labs 4-6, Primary Deuterium Storage Tanks, Crew/Passenger Quarters
Deck 18: Primary Deuterium Storage Tanks, Crew Quarters, Auxiliary Deflector Control, Maintenance Bay 1, Crew/Passenger Quarters
Deck 19: Fabricating Shop, Industrial Replicators 6-10, Primary Deuterium Storage Tanks, Deuterium Injectors, Crew/Passenger Quarters
Deck 20: Ship's Stores, Crew Quarters, Engineering Hardware Replicators, Cargo Bays 3-4, Cargo Transporters 3-4, Crew/Passenger Quarters
Deck 21: Forward Torpedo Launcher, Torpedo Storage and Loading, Torpedo Modification, Computer Research Lab, Torpedo Assembly Bay, Secondary SIF/IDF Generators, Crew/Passenger Quarters
Deck 22: Adult Classrooms, Crew/Passenger Quarters, Holodecks 7-10
Deck 23: Crew/Passenger Quarters, Cargo Bays 5 & 6, Cargo Transporters 5-6, Maintenance Bay 2
Deck 24: Tertiary Environmental Control, Crew/Passenger Quarters, Cargo Bays 7-10, Cargo Transporters 7-10
Deck 25: Shuttlebay 2, Shuttle Storage, Shuttle lift systems, Crew Quarters, Crew/Passenger Quarters, Marine Barracks, Transporter Rooms 6-14, Secondary Armoury
Deck 26: Shuttle Storage and Maintenance, Shuttle lift systems, Crew/Passenger Quarters, Cargo Bays 11-15, Cargo Transporters 11-15
Deck 27: Lateral Sensor Array, Auxiliary Computer Core (Level 1) , Crew/Passenger Quarters, Aft Torpedo Launcher, Torpedo Storage
Deck 28: Engineering Parts and Equipment Storage, Engineering Labs, Maintenance Bay 3, Auxiliary Computer Core (Level 2), Crew/Passenger Quarters
Deck 29: Quarternary SIF/IDF Generators, Materials Testing Lab, Auxiliary Computer Core (Level 3), Crew/Passenger Quarters
Deck 30: Main Engineering (Upper), Chief Engineer's Office, Primary Navigational Deflector
Deck 31: Main Engineering (Central), Secondary Hardware Replicators , Crew/Passenger Quarters, Cargo Bays 16-20, Cargo Transporters 16-20
Deck 32: Main Engineering (Lower), Tertiary Deuterium Storage Tanks, Large Meeting Room, Crew/Passenger Quarters
Deck 33: Holodecks 11-20, Crew/Passenger Quarters, Antimatter Injectors, Warp Coil Maintainance Access, Tertiary SIF/IDF Generators
Deck 34: Secondary Antimatter Storage Pods, Antimatter Generator, Emergency Food Rations Storage, Emergency Personnel Transporter 2, Emergency Power Facility, Main Tractor Beam Emitter
Deck 35: Sensor Analysis Labs, Emergency Personnel Transporter 1, Hazardous Material Storage and Containment, Sensor Instrument Bays, Antimatter Injectors, Antimatter Storage Pods
Deck 36: Waste Management, Warp Core Ejection Hatch

Starships Commissioned

Ambassador-class Starships
USS CaesarUSS ColumbusUSS LincolnUSS MenesUSS Thatcher

Official Federation Starship Specifications
Corvette Classes
(< 200 meters)
Defiant-classJu`Day-classNaucrate-classNeptune-class (ENT) • NV-class (ENT) • Nova-classOberth-class (TME) • Oberth-Refit-classRaven-classSaber-classSentinel-classWright-class
Frigate Classes
(200-350 meters)
Centaur-classHalsey-class (TME) • Intrepid-classMiranda-class (TME) • Miranda-Refit-classNew Orleans-classOlympic-classPhobos-class (TME) • Steamrunner-class
Cruiser Classes
(350-550 meters)
Akira-classAmbassador-classConstitution-Refit-class (TME) • Excelsior-class (TME) • Excelsior-Refit-classLuna-classNebula-classNX-class (ENT) • Prometheus-class
Ship-of-the-Line Classes
(550-1000 meters)
Fighter Classes Avenger-classMustang-classPhantom-classSpitfire-classTyphoon-class
Shuttle Classes Hunley-class ShuttleType 1-class Shuttle (ENT) • Type 3-class Shuttle (TME) • Type 6-class ShuttleType 7-class ShuttleType 8-class ShuttleType 9-class ShuttleType 10-class ShuttleType 11-class ShuttleType 18-class Shuttle
Runabout and Transport Classes Argo-classAvro-classDanube-classDelta Flyer-classTalon-classTri-Star-class
Captain's Yachts Aerowing-classIncursion-classMark I-classMark II-classWaverider-class
Submarine Classes Cousteau-class
Maintenance Classes Inspection Pod (ENT) • Workbee