20,000 Leagues Under the Sea: Submarine Voyage the cavern entrance simulating a surface storm, the Captain would order the submarine down into the depths as a precaution, and the guests enter the show building section of the attraction. Within minutes, the devastation such natural phenomenon can create was made clear with the ominous Graveyard Of Lost Ships, with shipwrecks from various centuries littering the sea bed, guarded by the silent, gliding figures of sharks. Leaving the destruction behind, the Nautilus would reach the North Pole, circumnavigating the Polar Ice Cap from below the surface, and narrowly avoiding large icebergs stabbing through the water. Venturing deeper, the Nautilus
Nuclear power in the United States then Captain Hyman Rickover, well known for his great technical talents in electrical engineering and propulsion systems in addition to his skill in project management, to the AEC to start the Naval Reactors project. Rickover's work with the AEC led to the development of the Pressurized Water Reactor (PWR), the first naval model of which was installed in the submarine . This made the boat capable of operating under water full-time – demonstrating this ability by reaching the North Pole and surfacing through the Polar ice cap. From the successful naval reactor program, plans were quickly developed for the use