The USS Crazy Horse has 20 primary decks.
Full Deck Listing
Deck 1
Main Bridge, Ready Room, Conference Room, Observation Lounge, Airlock 1
Deck 2
Captain's Dining Room, Captain's Quarters, Executive Officer's Office, Executive Officer's Quarters, Second Officer's Quarters, Command Suites, Diplomatic Suites
Deck 3
Senior Officer Quarters, Junior Officer Quarters, Holodeck 1, Adaptive Recreation Facilities
Deck 4
V.I.P. Quarters, Senior Enlisted Quarters, Galley, Officer's Mess, Crew Lounge, Ship's Library, Arboretum (Upper Level), Ship's Chapel
Deck 5
Arboretum (Lower Level), Sickbay, Medical Labs, Counseling Offices, Holodeck 2, Enlisted Crew Mess 1
Deck 7
Chief of Security's Office, Main Brig, Security Offices, Armoury 1, Stellar Cartography, Emergency Transporter 1-5, Auxiliary Control
Deck 8
Enlisted Crew Quarters, Torpedo Storage, Primary Torpedo Bay, Shuttle Control, Shuttle Bay (Upper Level), Workbee Storage
Deck 9
Transporter Room 1&2, The Rabbit Hole (Bar & Lounge), Enlisted Crew Quarters, Shuttle Bay (Catwalk Level)
Deck 10
Shuttle Bay (Lower Level), Chief of Science Office, Science Laboratories, Aeroponics Lab, Hydroponics Lab, Main Impulse Engines, Antimatter Storage Pods
Deck 11
Antimatter Storage Pods, Enlisted Crew Quarters, Cargo Bays 1 & 2, Astrogation & Navigational Control, Shuttle Storage, Shuttle Repair Bay, Primary Computer Control, Transporter Rooms 3 & 4, Navigational Sensor Emitters (Fore and Aft)
Deck 12
Transporter Rooms 5 & 6, Holodeck 3, Enlisted Crew Quarters, Upper Core Injection Assembly, Cargo Bays 3 & 4, Auxiliary Navigational Sensor Emitter (Ventral Exterior)
Deck 13
Enlisted Crew Quarters,
Deck 14
Enlisted Crew Quarters, Guest Quarters, Engineering (Upper Level), Cargo Bays 5 & 6, Enlisted Crew Mess 2
Deck 15
Engineering (Primary Level), Chief Engineer's Office, Auxiliary Brig, Auxiliary Security Office, Armoury 2, Investigative Labs, Enlisted Crew Quarters, Cargo Bay 7 & 8, Tractor Beam Emitters
Deck 16
Engineering (Lower Level), Main Deflector, Deflector Control, Recreation Facilities, Torpedo Storage, Aft Torpedo Bay
Deck 17
Cargo Transporter Pads 1 & 2, Long Range Sensor Emitter, Industrial Replicators, Storage, Armoury 3, Airlocks 9 - 12
Deck 18
Environment Control, Life Support, Cargo Bays 9 & 10, Gym 1 & 2
Deck 19
Emergency Transporters 6 - 19, Springball Court 1 - 3, Mechanics labs
Deck 20
Sensor Control, Marine Barracks, Parts Storage, Deuterium Storage, Airlocks 13 - 16