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Philadelphia County · dedicated 2006 · At Independence Seaport Mus., 211 S Columbus Blvd. & Walnut St., Philadelphia

In a covert CIA plan named the Jennifer Project, this ship was built at Sun Shipbuilding and Dry Dock Company, Chester, in the early 1970s and played a key role in US Cold War espionage. Its mission was to obtain intelligence by recovering a sunken Soviet submarine, three miles deep in the Pacific Ocean. Portions of the sub were raised by the ship's huge claw in the summer of 1974; six Soviet submariners were recovered and given a burial at sea.

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Marker data: Pennsylvania Historical and Museum Commission via data.pa.gov

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