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USS Jasper (PYc-13)
Career (United States)  United States
Name: Stranger
Owner: Fred E. Lewis
Builder: Lake Union Dry Dock Company, Seattle, Washington
Completed: 1938
Status: Acquired by the Navy 1 July 1941

|module2= Career (United States) Name: JasperNamesake: JasperAcquired: 1 July 1941Commissioned: 8 July 1941Out of service: 14 August 1947Struck: 11 December 1944Identification:

Scuttled, 29 September 1945Status: Transferred to the Maritime Commission for disposal in June 1948 |module3= General characteristics Class & type: patrol boatDisplacement: 395 long tons (401 t)Length: 134 ft (41 m)Beam: 23 ft 10 in (7.26 m)Draft: 16 ft 6 in (5.03 m)Installed power:

  • 2 × Washington diesel engines
  • 800 shp (600 kW)Propulsion:

2 × screwsSpeed: 12 kn (14 mph; 22 km/h)Complement: 98Armament: 2 × 3 in (76 mm)/50 caliber gun }} USS Jasper (PYc-13) was a coastal patrol yacht in the service of the United States Navy. She was named for the gemstone Jasper. The first Jasper (PYc-13), a diesel-powered yacht, was built as Stranger by Lake Union Dry Dock Co., Seattle, Washington, in 1938; purchased 1 July 1941 from her owner, Fred E. Lewis; renamed Jasper; and placed in service at San Diego, California, 8 July 1941.[1]

World War II service

After the installation of experimental sound and electronic equipment, Jasper was assigned to the 11th Naval District to perform research work at the Naval Sound Laboratory, San Diego. She continued this important scientific work throughout the war taking part in experiments with radio and sound waves in cooperation with the University of California, Division of War Research. Echo-ranging equipment on board Jasper was used in 1946 to discover a deep 300-mile-wide oceanic layer off the coast of California.[1]

The ship was placed out of service 14 August 1947 at San Diego and turned over to the Maritime Commission for disposal in June 1948.[1]


  1. 1.0 1.1 1.2 "Jasper". Naval History and Heritage Command. 22 July 2015. Retrieved 3 March 2016. 

This article incorporates text from the public domain Dictionary of American Naval Fighting Ships. The entry can be found here.

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