Captain Nemo and the Underwater City attempts this but only manages to flood the machine’s control room killing Lomax in the process. During this episode, the Bath brothers sneak into the Forbidden Area where they discover a second submarine, the Nautilus II, and see it as a means of escape. Enlisting Fraser to aid them, Fraser learns how to operate the submarine. During training they ram and kill a vast Manta Ray-like creature accidentally created during the building of the city. Fraser tells Nemo he should leave as he is attempting to cut off the supply of weapons to the American Civil War. Nemo refuses but
Captain Nemo in 1874 but is set immediately after the American Civil War, from 1861 to 1865. This would mean that Captain Nemo who appeared in "The Mysterious Island" dies "before" Captain Nemo who appeared in "Twenty Thousand Leagues Under the Sea" sets out on the undersea travels. Also, when Captain Nemo is finally seen in "The Mysterious Island", he mentions having met Aronnax 16 years previously. Many errors in the original French first printing (the 'grand in-8' published by Pierre-Jules Hetzel) are likely the fault of the editors who, at that time, were unlikely to consult the authors of the books