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 Trophy holder of the trophy, Francis Joyon, also holds the around the world sailing record, this has not always been the case. In 2004 Steve Fossett broke the world record with the catamaran "Cheyenne" but was not awarded the trophy. According to reports, the trophy organizers requested a higher entrance fee from Fossett than from the other competitors, the difference which he refused to pay. The winner of the trophy that year was Olivier de Kersauson on "Geronimo", with a time which was five days slower than Fossett's world record. The "Trophy Jules Verne" was the subject of a public order