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
French ship Jules Verne (A620) French ship Jules Verne (A620) Jules Verne is a repair ship of the French Navy, named in honour of science-fiction writer Jules Verne. Originally named "Achéron" and intended as an ammunition transport ship, she was converted to repair ship after her keel had been laid. "Jules Verne" was long based in Djibouti (she was featured on the 10 000-Djiboutian francs banknote). In 1997, she was assigned to the Force d'Action Navale. She was designed to replenish, refuel and repair the ships of an operational force at sea. She was fitted with a complete 240-m2 hospital including an operating theatre, a