(See K. P. Green, pp. 48-52, May 2010 Proceedings)
Captain Michael R. Tollefson U.S. Navy (Retired)—Admiral Green's scan of the waterfront for an acceptable vessel to take the electromagnetic launcher to sea missed the obvious. The Navy already has on the ways an all-electric drive ship that delivers by 2014. Powered by a 78-megawatt integrated power system, with 54 megawatts of power margin at 20 knots, the Zumwalt (DDG-1000) is that obvious choice.
The 78-megawatt main and auxiliary turbine generators power a 34.6-megawatt advanced induction motor for propulsion. Beyond hotel services and mission systems, the delta is available for rail guns, ballistic missile defense radars, and other loads not yet imagined, without requiring any added generation capacity. The generators and the advanced induction motor have completed their factory testing. At 20 knots, the Arleigh Burke class has only 1.7 megawatts of power margin.