The USS Helena (SSN-725) is a nuclear-powered attack submarine of the Los Angeles class, commissioned by the United States Navy in 1984. Designed for anti-submarine warfare, intelligence gathering, and land attack missions, it features advanced sonar and weapon systems, allowing it to operate effectively in various maritime environments. The submarine is named after the city of Helena, Montana, and it has a length of 362 feet. With a crew of approximately 130 personnel, the USS Helena can dive to depths greater than 800 feet and is capable of carrying torpedoes and cruise missiles for its operational missions.