The choice of gas determines the lift capacity and safety profile of the craft:

: Powered, steerable aerostats equipped with engines and control surfaces like rudders and elevators for navigation.

: Feature an internal structural framework that holds the gas cells and maintains the ship's shape regardless of gas pressure.

: Unpowered aerostats that drift with the wind or are tethered in place. Pilots primarily control altitude by adjusting the gas temperature or releasing ballast.