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GAO: Columbia Construction Costs Unrealistic

Rich Abott By
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GAO: Columbia Construction Costs Unrealistic
Artist rendering of the future Columbia-class nuclear-armed ballistic missile submarine (SSBN), which will replace the Ohio-class submarines. (Illustration: U.S. Navy)

A Government Accountability Office (GAO) report released Monday said the Navy’s estimate that Columbia-class submarine procurement will cost $115 billion is overly optimistic about labor hour assumptions. The Navy plans to start replacing the Ohio­-class ballistic missile submarines (SSBNs) with 12 Columbias in 2027. In creating the new vessel, the Navy is developing several new technologies related to propulsion, missile tubes, and survivability. The nuclear submarines are built by General Dynamics Electric Boat [GD] (GDEB) and Huntington Ingalls Industries [HII]…

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