propulsion of a ship or submarine with heat provided by a nuclear reactor.

Nuclear pulse propulsion or external pulsed plasma propulsion is a hypothetical method of spacecraft propulsion that uses nuclear explosions for thrust.

The Aircraft Nuclear Propulsion program and the preceding Nuclear Energy for the Propulsion of Aircraft project worked to develop a nuclear propulsion system for aircraft.

(also antiproton-catalyzed nuclear pulse propulsion) a variation of nuclear pulse propulsion based upon the injection of antimatter into a mass of nuclear fuel to initiate a nuclear chain reaction for propulsion when the fuel does not normally have a critical mass.