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voor de liefhebbers van atoomraketten in o.a. duikboten :)

Reactor [submarine-based nuclear ramjet] Startup (1962) 

In surface ships and submarines
Many military submarines, aircraft carriers and, owing to crude oil prices and emissions, a growing number of large civilian surface ships[citation needed], especially icebreakers, use nuclear reactors as their power plants (see nuclear marine propulsion for civil use and nuclear navy for military use).

Proposed and theorized nuclear rocket propulsion
Various types of nuclear propulsion have been proposed, and some of them tested, for spacecraft applications:
 
Antimatter catalyzed nuclear pulse propulsion 
Bimodal Nuclear Thermal Rockets conduct nuclear fission reactions similar to those safely employed at nuclear power plants including submarines. The energy is used to heat the liquid hydrogen propellant. Advocates of nuclear powered spacecraft point out that at the time of launch, there is almost no radiation released from the nuclear reactors. The nuclear-powered rockets are not used to lift off the Earth. Nuclear thermal rockets can provide great performance advantages compared to chemical propulsion systems. Nuclear power sources could also be used to provide the spacecraft with electrical power for operations and scientific instrumentation.[1] 
Bussard ramjet 
Fission-fragment rocket 
Fission sail 
Fusion rocket 
Gas core reactor rocket 
Nuclear electric rocket 
Nuclear photonic rocket 
Nuclear pulse propulsion 
Nuclear salt-water rocket 
Nuclear thermal rocket 
Radioisotope rocket 

Attention: very technical!

Thanks to Rockhound57 :)