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The Navy's $864 Million Underwater Drones Still Don't Work

  • Pentagon test data show 24 major failures since September 2014
  • Crippled Lockheed drones towed to port seven times this year
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On Board Littoral: How to Build a Warship for $528M

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The U.S. Navy’s new Littoral Combat Ship would be ineffective at hunting for mines because an underwater drone made by Lockheed Martin Corp. that’s supposed to find them often fails to work, the Pentagon’s weapons-testing office found.

While mine-hunting is intended to be the primary combat mission of the ship, the drones required to detect underwater explosive devices from a safe distance have failed 24 times since September 2014, according to Navy test data provided to the Defense Department’s Office of Operational Test & Evaluation.