Cramp Shipbuilding was a major shipbuilder with a very distinguished history going back to the 1820s. It was bought by Averell Harriman's American Ship & Commerce Corporation in 1919 and closed in 1927. The yard stretched from Norris Street to Lehigh Avenue, on nearly a quarter of a mile of water-front and over 30 acres. It was revived for the WWII effort, with the encouragement of the Navy, which provided $22mm toward the cost, but with only limited success. Cramp Shipbuilding closed permanently after the war ended. See the site from the air on Google here. If anyone can provide any more information about this yard's early years and the ships it built, please e-mail me at tim@coltoncompany.com