Naval Submarine Base New London by the Submarine Escape Immersion Equipment in the 2000s. On January 21, 1954 the first nuclear-powered submarine, , was launched from Groton. "Nautilus" became the first vessel to transit the North Pole during a historic trip across the Arctic in 1958. "Nautilus" spent most of her career assigned to Submarine Squadron 10 located at State Pier in New London. It was retired from service in 1980. In 1982 "Nautilus" was designated a National Historic Landmark in Groton. It is permanently moored south of the main gate, attached to the U.S. Submarine Force Museum. Self-guided tours are available to the public
Submarine Force Library and Museum 1997 the Committee decided to start planning and raising funds for a addition to the museum building. Fundraising started the next year, and construction project ran from 1998 to early 2000. The new addition was officially opened to the public on April 28, 2000 "in conjunction with the Centennial Celebration of the United States Submarine Force", according to the museum. The museum has 33,000 artifacts, including the first nuclear-powered submarine in the world, the . Launched in 1955 and decommissioned in 1980, the submarine had traveled under the polar ice cap and reached the North Pole during the Cold War.