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
HMS Nautilus (1914) HMS Nautilus (1914) HMS "Nautilus" was a Royal Navy submarine. She was the largest submarine built for the Royal Navy at the time. She was also the first to be given a name. "Nautilus" was designed in response to recommendations for an overseas submarine displacing 1,000 tons and capable of . The resulting design changed from the saddle tanks common at the time to a double hull. The order was given to Vickers in 1912 and her keel was laid down in March 1913. Although launched in 1914 it took until 1917 to complete the vessel. "Nautilus" spent most of