Hybrid-electric propulsion systems for U.S. Navy ships

U.S. Navy Secretary Ray Mabus says the military branch is moving forward with next-generation amphibious assault ships featuring hybrid-electric propulsion systems designed to save fuel, reports DOD Buzz, an online publication covering the U.S. military, Ship & Bunker reports.

The USS America and USS Tripoli, part of an in-development group of amphibious assault ships, will be capable of operating on diesel-electric propulsion as well as gas-turbine engines.

"Now is the time to do it," Mabus said in response to a question about powering ships and planes with alternative fuels at the 2013 Energy Efficiency Global Forum in Washington, D.C. on May 21.

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