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Naval Shipyards: Complete Information Needed for Decision-Making on Multibillion-Dollar, 50-Year Infrastructure Program , September 25 , 2026

September 25, 2026

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From the report: "The Navy’s Shipyard Infrastructure Optimization Program (SIOP) will surpass $200 billion and take over 50 more years to execute, based on GAO’s analysis of Navy plans. Developing the plans and cost estimates to rebuild the Navy’s four public shipyards has taken the Navy years longer—and will cost much more— than originally anticipated due to multiple challenges and changes involved in the program. For example, environmental issues led to additional projects and more extensive work affecting project plans and costs at the shipyards, including Puget Sound Naval Shipyard (see figure).

The Navy established an oversight framework to guide SIOP plans and decisions over the duration of the program. The framework includes tools and requirements typically used for major defense acquisition programs—like for missiles, aircraft, or ships. However, the Navy has not outlined steps in the framework to reevaluate program objectives and resources as the program progresses over the next several decades. Without building such reviews into key future decision points, the Navy is limiting its ability to ensure that capabilities in SIOP’s plans today continue to be aligned or adjusted to support future fleet warfighting needs."

Authors - Government Accountability Office (GAO)

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Government Accountability Office (GAO)

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