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 and Nantes society, which he criticized in his poem "La sixième ville de France" ("The Sixth City of France"). In July 1848, Verne left Nantes again for Paris, where his father intended him to finish law studies and take up law as a profession. He obtained permission from his father to rent a furnished apartment at 24 Rue de l'Ancienne-Comédie, which he shared with Édouard Bonamy, another student of Nantes origin. (On his 1847 Paris visit, Verne had stayed at 2 Rue Thérèse, the house of his aunt Charuel, on the Butte Saint-Roch.) Verne arrived in Paris during a time