Twenty Thousand Leagues Under the Sea as an inhabitant of British Colonial India, "is an inhabitant of an oppressed country". Verne took the name "Nautilus" from one of the earliest successful submarines, built in 1800 by Robert Fulton, who later invented the first commercially successful steamboat. Fulton's submarine was named after the paper nautilus because it had a sail. Three years before writing his novel, Jules Verne also studied a model of the newly developed French Navy submarine "Plongeur" at the 1867 Exposition Universelle, which inspired him for his definition of the "Nautilus". The breathing apparatus used by "Nautilus" divers is depicted as an untethered version
Twenty Thousand Leagues Under the Sea the protagonists' situation changes. No one seems to be on board any longer and the "Nautilus" moves about randomly. Ned Land is even more depressed, Conseil fears for Ned's life, and Aronnax, horrified at what Nemo had done to the ship, can no longer stand the situation either. One evening, Ned Land announces an opportunity to escape. Although Aronnax wants to leave Nemo, whom he now holds in horror, he still wishes to see him for the last time. But he knows that Nemo would never let him escape, so he has to avoid meeting him. Before the escape, however,