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 ATV targets for this Demo-Day were successfully met. The ATV made contact with "Zvezda"'s aft docking port at 14:45:32 UTC, starting a sequence of docking events that included mechanical capture and docking with the ISS a few minutes later at 14:52 UTC. After docking and leak checks were conducted, the ISS crew was able to enter the pressurised cargo module and access the ATV's cargo. "Jules Verne"<nowiki>'</nowiki>s liquid tanks were connected to the ISS, and their contents were transferred to the station. The crew manually released air components directly into the ISS's atmosphere. The ISS crew gradually replaced the ATV's cargo