US Navy Faces Billions in Submarine Maintenance Backlogs
The United States Navy is confronting a serious challenge: a substantial backlog in submarine maintenance that threatens to render more than a dozen attack submarines inactive for prolonged periods, potentially costing over three billion dollars. A recent assessment by the Government Accountability Office (GAO) underscores that these delays have already resulted in thousands of lost operational days and billions of dollars in expenditures for operational submarines. This predicament also impacts retired vessels awaiting decommissioning, with the USS Pasadena serving as a prime illustration of a submarine accumulating significant expenses due to inadequate shipyard availability.
US Navy's Submarine Readiness Imperiled by Extensive Maintenance Delays and Soaring Costs
In a critical report released on August 31, 2026, the Government Accountability Office (GAO) revealed the alarming state of the US Navy's submarine fleet. Chronic maintenance backlogs are set to sideline approximately fifteen attack submarines, which will remain idle for over 14,000 days through the end of the current decade. This inactivity is projected to burden taxpayers with an estimated cost of $3.1 billion to merely sustain these vessels in their dormant state. The report emphasizes that this financial drain and operational inefficiency stem from a persistent issue of delayed maintenance, which has already cost the Navy an estimated $3.4 billion and over 15,000 operational days for active submarines over the past decade. The problem is exacerbated by the limited capacity of the four public shipyards responsible for nuclear submarine maintenance, repairs, and decommissioning. For instance, the USS Pasadena, a Los Angeles-class submarine, entered inactive idle status on January 1, 2025, but will not be decommissioned until November 15, 2028, due to these capacity constraints. This delay alone is anticipated to incur costs exceeding $300 million, with the Navy planning to use the vessel as a training platform in the interim. Efforts to address this crisis include President Donald Trump's executive order to establish a fifth public shipyard and the Navy's exploration of alternatives such as defueling nuclear reactors pier-side and utilizing floating dry docks. However, the GAO notes that the feasibility and cost-effectiveness of these proposed solutions require more rigorous analysis. Additionally, options like transferring inactive crews to active vessels and extending the service lives of submarines are under consideration, pending official approval.
This comprehensive report highlights a pressing national security concern. The extended downtime and immense financial burden associated with the submarine maintenance backlog could significantly compromise the Navy's readiness and operational capabilities. It calls for immediate and decisive action, not only in expanding shipyard infrastructure but also in rigorously evaluating and implementing innovative maintenance strategies. The long-term implications for the US Navy's strategic superiority and global presence depend on a swift and effective resolution to this escalating crisis.