In fact, you actually get less radiation exposure on a tour on a US submarine than you would on the shore, as cosmic rays are absorbed by water. There are two drawbacks - expense and radioactivity, although the latter is far less of a problem than it was.
The crazy amount of energy generated by a carrier's two reactors (eight in the case of USS Enterprise) make them some of the fastest ships in the fleet, despite their bulk-nuclear-powered ships are the largest naval ships in the world. This allows the vessel to go more or less anywhere in the ocean and if they're a submarine stay submerged for weeks if not months on end.Īll submarines in the US Navy are nuclear powered, as are all currently-active carriers USS Kitty Hawk was the last conventionally powered carrier in service with the USN, and was decommissioned on May 12, 2009. Simply put, they don't need to be refuelled during a sortie and are only limited by the endurance of their crew and other supplies. Nuclear powered ships or submarines are very useful things for a navy to have. This is not the same as nuclear-capable, the latter meaning that it can carry nuclear weapons. If an N is in the type designation, that means that the vessel is nuclear-powered.
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