Nuclear vessel
A nuclear vessel was any naval vessel powered by a nuclear fission reactor. Typically such vessels were operated by military forces, such as the US Navy. That force maintained nuclear powered aircraft carriers, one of which was the .

In 1986, time travelers Pavel Chekov and Nyota Uhura were in search of a nuclear vessel from which to obtain high-energy photons which they needed to recrystalize the dilithium aboard their stolen Klingon Bird-of-Prey, called the HMS Bounty. They were able to obtain some from the Enterprise, which they found docked at the Alameda Naval Base. Chekov, being Russian, had difficulty pronouncing "vessel" while in search of the vessel, referring to such ships as "nuclear wessels". This made finding information about the base and its vessels from a San Francisco policeman and other passersby difficult as Chekov was apparently unaware of Cold-War tensions between his homeland and the United States at the time. ()

External link 
 
Earth vehicles
Military