William Cramp & Sons

William Cramp & Sons Shipbuilding Company (also known as William Cramp & Sons Ship & Engine Building Company) of Philadelphia was founded in 1830 by William Cramp, and was the preeminent U.S. iron shipbuilder of the late 19th century. In 1890 the company built the battleships USS Indiana and USS Massachusetts, armored cruiser USS New York, and protected cruiser USS Columbia. Three of these ships took a part in the battle with the Spanish fleet in 1898 at Santiago de Cuba. The victory in this battle heralded America's emergence as a great power.[1] The American Shipping and Commercial Corporation bought the yard in 1919 but closed it in 1927[2] as fewer ships were ordered by the U.S. Navy after passage of the Naval Limitations Treaty in 1923.

In 1940, the Navy spent $22 million to reopen the yard as Cramp Shipbuilding to build cruisers and submarines. Cramp used the long slipways to construct two submarines at a time, with the intention of launching them simultaneously. However, the shipyard's submarine construction program was not especially successful, as poor management hindered the delivery of the boats.[3] The first delivery was made two years after keel laying, and fitting out was then done by Portsmouth Navy Yard. The best construction time for a submarine was 644 days.[4]

Cramp closed in 1947 and the site, on the Delaware River in Philadelphia's Port Richmond neighborhood still sits empty.

Notable projects

Vessels built by the firm that are listed on the U.S. National Register of Historic Places include:

See also


  1. "William Cramp & Sons Shipbuilding Company". Retrieved 11 July 2016.
  2. "Ships for the Seven Seas: Philadelphia Shipbuilding in the Age of Industrial Capitalism". Economic History Association. 1997.
  3. Stefan Terzibaschitsch, Submarines of the US Navy, Arms and Armour Press, 1991. p.70, 71
  4. Terzibaschitsch, p.70, 71
  5. Preble, George H. (1895). "A Chronological History of the Origin and Development of Steam Navigation". Reprinted. L.R. Hamersly & Company. p. 398. Retrieved 9 September 2013.
  6. Belyk, Robert C. Great Shipwrecks of the Pacific Coast. New York: Wiley, 2001. ISBN 0-471-38420-8
  7. Paterson, T. W. (1967). British Columbia Shipwrecks. Langley, BC: Stagecoach Publishing. pp. 72–76. Archived from the original on 2006-09-05. Retrieved 2006-08-26.
  8. Scott, R. Bruce; A.G. Brown. "The History of the Sinking of the Valencia". Breakers Ahead. Archived from the original on October 8, 2007. Retrieved 2006-08-26.
  9. "William Cramp & Sons Shipbuilders". Shipbuilding History. Retrieved 8 October 2013.
  10. "Some Notable Early Cruise Ships from Miami". Original. GetCruising.com. Retrieved 8 October 2013.
  11. "National Register Information System". National Register of Historic Places. National Park Service. March 13, 2009.
  • "Cramp & Sons". Builders. Destroyer History Foundation. 2007. Retrieved 2007-11-05.
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