Nautilus (Verne) from seawater) is the craft's primary power source for propulsion and other services. "Nautilus" is double-hulled, and is further separated into water-tight compartments. Its top speed is . Its displacement is submerged. In Captain Nemo's own words: "Nautilus" uses floodable tanks in order to adjust buoyancy and so control its depth. The pumps that evacuate these tanks of water are so powerful that they produce large jets of water when the vessel emerges rapidly from the surface of the water. This leads many early observers of "Nautilus" to believe that the vessel is some species of whale, or perhaps a
Jules Verne (crater) one of the few lunar craters that is known by a person's full name rather than the surname. It is also named for a science-fiction author rather than a noted scientist or explorer, as is typical. (But see H. G. Wells.) By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Jules Verne. 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,