The Naval Undersea Museum is an official naval museum located at Keyport, Washington, USA. The museum is one of the 12 Navy museums that are operated by the Naval History & Heritage Command. The museum sits next to a branch of the Naval Undersea Warfare Center. According to the museum website, its mission is "to preserve, collect and interpret Naval undersea history, science and operations for the benefit of the U.S. Navy and the people of the United States."