Alpha- No hyperdrive, atmospheric capable, small enough to land on other ships. ( Rescue Runners, Ambulances, shuttles, some fighters, Drop Ships)
Bravo- Hyperdrive, atmosphere capable and ship board landings, typically multi-person crews. (Recon ships, Gunships, Bombers, Shark fighters)
Charlie- Hyperdrive, large landing bays for Alpha and Bravo class ships, usually support ships (the Endurance, hospital ships, fighter base ships, Marine base ships)
Delta – Hyperdrive, warships, heavily armed and armored.
Echo – Hyperdrive, Squadron and Fleet Command Ships, heavily armed and armored.
X-Ray – Specialty ships, Defensive weapons only, hyper-drive capable (Refit Ship, the Star Digger, Farm Ship)