The Amphibious Assault Ship shown is the US Navy vessel Essex, LHD-​2, with steam turbine propulsion. From LHD-​8 this class will be Gas Turbine/Electric powered. At high speed the LHD-​8 will be driven by two 35,000hp LM2500 gas turbines, for lower speed operation 5000 hp AC motors will be used. The propellers are controllable reversible pitch propellers and SSS Clutches are fitted in both the GT and Electric Drives for automatic changeovers.

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