Answer: Nautilus
Congress authorized the building of a nuclear powered submarine in 1951. Construction of the Nautilus (SSA-571) began on June 14, 1952 and she was launched on January 21, 1954, with first lady Mamie Eisenhower christening the boat with the traditional bottle of Champagne. On January 17, 1955 Nautilus' skipper, Commander Eugene P. Wilkerson, sent the historic message: "Underway on nuclear power." The Nautilus was a great success. On of her achievements was the first crossing of the North Pole by any ship or submarine. She served for 25 years before being decommissioned in 1980. Because of her historical significance, Nautilus was not scrapped. Instead, she was preserved and is berthed at the U.S. Navy Submarine Force Museum in Groton, Connecticut. Nautilus attracts 250,000 visitors each year.