US submarine shipyard capacity cannot sustain fleet size targets

The United States has only two shipyards capable of building nuclear submarines: Huntington Ingalls Industries in Newport News, Virginia, and General Dynamics Electric Boat in Groton, Connecticut. Between them, they currently produce roughly 1.2 to 1.4 Virginia-class submarines per year, well below the Navy's stated requirement of two per year to maintain a 66-boat attack submarine fleet. The Navy's own projections show the attack submarine fleet dropping to as few as 46 boats by the mid-2030s. This matters because the submarine force is the single most survivable leg of the nuclear triad and the primary tool for undersea intelligence, surveillance, and reconnaissance. Every boat short of the requirement means gaps in combatant commander coverage — fewer submarines available to track adversary ballistic missile submarines, fewer available to launch Tomahawk strikes, and fewer available to support special operations. The Pacific theater alone demands more attack submarines than the entire fleet will soon have. The workforce is the binding constraint. Submarine construction requires highly specialized welders, pipefitters, and nuclear-qualified technicians who take 3-5 years to train to full productivity. Both shipyards lost thousands of skilled workers during post-Cold War drawdowns in the 1990s and have struggled to rebuild. Electric Boat alone needs to hire roughly 18,000 workers over the next decade while competing with commercial employers offering comparable wages without security clearance requirements or mandatory overtime. The problem persists because nuclear submarine construction is a monopsony — the US Navy is the only customer, so the industrial base scales to match Navy procurement budgets, not strategic need. When Congress cut submarine procurement in the 1990s peace dividend, the workforce and supplier base shrank accordingly. Rebuilding that capacity takes a decade or more, and there is no commercial market to sustain it in the interim. The AUKUS agreement to build SSN-AUKUS boats for Australia adds further pressure to an already overstretched industrial base. Structurally, the two-shipyard model creates a single point of failure with no surge capacity. Unlike aircraft or vehicle manufacturing, you cannot simply open a third submarine yard — the specialized facilities, tooling, and workforce represent billions in capital investment and years of regulatory qualification. The result is a slow-motion crisis where strategic requirements outpace industrial reality.