Nuclear submarine nuclear-powered submarine was first proposed in the United States Navy by the Naval Research Laboratory's Ross Gunn in 1939. Construction of the world's first nuclear powered submarine was made possible by the successful development of a nuclear propulsion plant by a group of scientists and engineers at the Naval Reactors Branch of the Bureau of Ships and the Atomic Energy Commission. In July 1951 the U.S. Congress authorized construction of the first nuclear-powered submarine, "Nautilus", under the leadership of Captain Hyman G. Rickover, USN (sharing names with Captain Nemo's fictional submarine in Jules Verne's "Twenty Thousand Leagues Under the Sea",
Jules Verne (crater) Jules Verne (crater) Jules Verne is a large lunar impact crater on the far side of the Moon, named after the French author. It is located to the west-southwest of the Mare Ingenii, one of the few lunar mares on the far side. To the southeast of Jules Verne is the crater Lundmark, while Koch is located to the south-southeast. To the northwest is the large walled plain Pavlov. Most of the interior floor of this crater has been flooded with basaltic lava, leaving a dark, low-albedo surface that is relatively level and flat. It is somewhat unusual for a