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GAO Report on Navy Ship Sustainment

The following is the March 24, 2020, Government Accountability Office report, Navy Shipbuilding: Increasing Focus on Sustainment Early in the Acquisition Process Could Save Billions.

From the report

The Navy has delivered warships—such as aircraft carriers, destroyers, and submarines—to its fleet over the past 10 years that require more effort to sustain than initially planned. In assessing how these classes of ships are sustained, GAO found 150 examples of class-wide problems, such as unreliable ship systems. These problems stemmed from shipbuilding programs not identifying, evaluating, or mitigating sustainment risks during the acquisition process. GAO found that it would cost the Navy $4.2 billion to correct just the 30 percent of these problems for which the Navy had data on estimated repair costs.

GAO found that shipbuilding programs’ requirements for sustainment reflect weaknesses with how Department of Defense (DOD) policy defines these requirements for ships. Sustainment requirements should influence acquisition decisions that determine the sustainability of a ship class, such as the ship’s design. However, the Navy’s sustainment requirements do not provide key information on how reliable and maintainable mission-critical systems should be and, therefore, cannot adequately inform acquisition decisions.

GAO also found that shipbuilding programs did not consistently address sustainment risks in acquisition planning documents. For example, the operating and support costs included in cost estimates did not capture all sustainment risks that could affect costs or evaluate sensitivity to changing sustainment assumptions, contrary to DOD and Navy cost estimating guidance. As a result, for six shipbuilding programs whose costs GAO could assess, the Navy had underestimated sustainment costs by $130 billion, as shown below.

The Navy has begun making some changes to its acquisition oversight process, such as developing sustainment program baselines and adding a sustainment oversight review. While positive, these changes focus on considering sustainment after key decisions are made early in the acquisition process. GAO also found that DOD is not required to provide detailed information about shipbuilding programs’ sustainment cost growth to Congress. As such, Congress does not have full insight into the extent of shipbuilding programs’ cost growth and why such growth occurred.

Download the document here.