The intricate process of constructing the United States Navy’s undersea fleet begins at specialized industrial hubs scattered across the country. These facilities, operated by a combination of private defense contractors and public shipyards, represent some of the most advanced manufacturing environments in the world. Understanding where these complex vessels are assembled provides insight into the nation’s industrial capacity and strategic maritime infrastructure.
Primary Nuclear Power Construction Facilities
The design and construction of nuclear-powered submarines, including attack boats and ballistic missile carriers, are concentrated at two premier shipbuilding locations. These yards are specifically equipped to handle the rigorous safety standards and precision engineering required for nuclear propulsion systems. The work performed here is critical to maintaining the underwater nuclear deterrent that forms the backbone of national security strategy.
Electric Boat, Groton, Connecticut
Electric Boat, a subsidiary of General Dynamics, operates the primary facility on the East Coast, located in Groton, Connecticut. This shipyard is responsible for building every unique class of nuclear submarine currently in service with the U.S. Navy. From the design phase through final sea trials, this location serves as the nation’s central hub for undersea warfare construction.
Bremerton Shipyard, Kitsap Peninsula, Washington
On the West Coast, the Bremerton Shipyard on the Kitsap Peninsula is the sole facility capable of new construction for nuclear submarines in the Pacific Northwest. This location handles the building of Virginia-class attack submarines and plays a vital role in maintaining the fleet presence in the Pacific and Indian Oceans. The dry docks here are among the largest in the world, designed to accommodate the massive dimensions of modern nuclear vessels.
Conversion, Repair, and Non-Nuclear Construction
While the major combatants are built at the dedicated nuclear facilities, other maritime locations focus on conversion programs and the construction of smaller support vessels. These yards handle the complex work of refueling and overhauling existing submarines, as well as producing specialized craft that do not require nuclear certification.
Portsmouth Naval Shipyard, Kittery, Maine
Although primarily known as a repair facility, the Portsmouth Naval Shipyard in Kittery, Maine, also plays a role in submarine modernization and conversion. The yard is uniquely situated to service both the Atlantic and Pacific Fleets, providing critical life-extension programs that keep older submarines operational for decades.
General Dynamics NASSCO, San Diego, California
For non-nuclear construction, General Dynamics’ National Steel and Shipbuilding Company (NASSCO) in San Diego is a key player. This location focuses on building auxiliary ships, oilers, and dry cargo vessels that support the fleet. While not involved in attack submarine production, this yard contributes significantly to the overall maritime logistics infrastructure.
Industrial Infrastructure and Workforce Expertise
The concentration of talent and infrastructure around these shipyards is a defining feature of the U.S. submarine industrial base. The regions surrounding these facilities have developed deep pools of specialized engineering and welding expertise that cannot be replicated elsewhere. This ecosystem ensures that the knowledge required to build these sophisticated machines remains within the national workforce.
