on 1 June, and headed for the Caribbean for intensive research. Her studies during 1966 also took her to Narragansett Bay and twice to Bermuda. At the beginning of 1967, Grouper was at New London preparing to resume gathering knowledge of underwater sound propagation. Up until the end of 1968, Grouper was still adding accomplishments as a floating laboratory to her long and outstanding record during both war and peace. In May 1965 Grouper surpassed the record previously held by for serving the longest as the oldest submarine in the U.S. Navy.Grouper was decommissioned and stricken on December 2, 1968. On August 11, 1970, she was sold for scrapping. Awards Navy E Ribbon American Campaign Medal Asiatic-Pacific Campaign Medal with 10 battle stars World War II Victory Medal National Defense Service Medal with star In mediaGroupers 1943 mission to land men and gear on New Britain is depicted in "The Grouper Story," a 1957 episode of The Silent Service'', an American television series that aired in syndication in the United States for two seasons in 1957 and 1958. References Citations Bibliography Hinman, Charles R., and Douglas E. Campbell. The Submarine Has No Friends: Friendly Fire Incidents Involving U.S. Submarines During World War II. Syneca Research Group, Inc., 2019. . External links Sinking of Lisbon Maru DANFS: USS Grouper hazegray.org: USS Grouper navsource.org: USS Grouper "The Grouper Story," Episode 21 of The Silent Service, on YouTube. Gato-class submarines World War II submarines of the United States Cold War submarines of the United States Ships built in Groton, Connecticut 1941 ships Maritime incidents in February 1943 Maritime incidents in July 1943 Friendly fire incidents of World War II