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
The Secret Adventures of Jules Verne Alexandre Dumas. However, the show cannot be historically placed. For example, at least one episode ("Southern Comfort") takes place during the American Civil War (1861–1865). During the Civil War, the historical Jules Verne was already married; the fictional character remains single throughout the first season. Also, the historical Verne would have been in his mid-thirties at the time of that conflict, whereas Chris Demetral, the actor who portrayed him on television, was in his mid-twenties. The Aurora is at the heart of The Secret Adventure of Jules Verne. The world's first dirigible airship, property of Mr. Phileas Fogg of London,