The US Navy has added USS Massachusetts (SSN-798) to its fleet, marking the commissioning of the 25th Virginia-class nuclear-powered attack submarine and reinforcing its advanced undersea combat capabilities.
The submarine continues a long naval tradition, becoming the eighth vessel named after the state of Massachusetts. Its predecessor, USS Massachusetts (BB-59), served prominently in World War II as part of the South Dakota-class, participating in key Pacific campaigns between 1943 and 1945.
SSN-798 is the seventh Block IV submarine produced through a collaboration between General Dynamics Electric Boat and HII-Newport News Shipbuilding. It is part of a 2014 contract valued at $17.6 billion for 10 submarines, incorporating design improvements aimed at increasing availability while reducing lifecycle costs. Despite plans for a 48-submarine fleet, US Navy leadership has indicated that operational requirements surpass current targets.
The Virginia-class was developed to replace the Los Angeles-class submarines, offering superior stealth, agility, and combat versatility. These submarines are capable of conducting anti-submarine and anti-surface warfare, intelligence missions, and precision strikes using Tomahawk cruise missiles, along with Harpoon missiles and Mk 48 torpedoes.
Newer blocks feature the Virginia Payload Module, significantly boosting missile capacity and enabling future integration of advanced weapons and unmanned platforms. The submarines are also equipped for special operations, including the deployment of divers and unmanned underwater systems through dedicated lockout chambers.
With a displacement of approximately 7,800 tons, a length of 377 feet (115 meters), and a beam of 34 feet (10.36 meters), the Virginia-class can dive beyond 800 feet (244 meters) and reach speeds of around 25 knots. Their nuclear propulsion systems are designed to last the entire service life of the vessel, minimizing maintenance while maximizing operational endurance.
