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 invitation to join the expedition, which he accepts. Canadian whaler and master harpoonist Ned Land and Aronnax's faithful servant Conseil are also brought aboard. The expedition departs Brooklyn aboard the United States Navy frigate "Abraham Lincoln" and travels south around Cape Horn into the Pacific Ocean. After a long search, the ship finds the monster and then attacks the beast, which damages the ship's rudder. The three protagonists are then hurled into the water and grasp hold of the "hide" of the creature, which they find, to their surprise, to be a submarine very far ahead of its era. They