The electric drive propels the Makin Island at speeds of up to 12 knots, or 13.8 miles an hour, about half the ship's top speed using its gas turbine engine. It also produces no additional emissions, and has no moving parts other than a rotor shaft.
July 21, 2012 9:14 AM PDT
Photo by: Daniel Terdiman/CNET
| Caption by: Daniel Terdiman
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