PhiladelPhia Navy y ard PhiladelPhia, PeNNsylvaNia The Philadelphia Naval Shipyard was established in 1776 at the start of the American Revolution, and was the birthplace of the United States Navy. Now a NAVSEA facility, a key element remains the Naval Foundry and Propeller Center (NFPC) which fabricates all submarine and many surface vessel propellers for the Navy. The challenge is to provide designs which generate the most thrust, w

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