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''Granville S. Hall'' was a liberty ship named after Granville S. Hall. She was built at the J. A. Jones Construction Company in Florida and launched in 1944 to serve as a civilian cargo ship. In 1953 she was acquired by the United States Navy for use as a miscellaneous auxiliary service craft under the designation YAG-40. As YAG-40 she took part in Operation Castle before being laid up again in 1957. Reactivated in 1962, she was commissioned as USS ''Granville S. Hall'' (YAG-40) and participated in Project SHAD and Project 112. She was scrapped in 1972. ==Service history== Originally a liberty ship named ''Granville S. Hall'' she was launched under Maritime Commission contract on 24 October 1944 by the J. A. Jones Construction Company in Panama City, Florida. She was sponsored by Mrs. Isabelle Gabriel; and placed in service the same month for cargo ship duty with Coast-Wise Lines. She operated with Coast-Wise until 1952 when she entered the National Defense Reserve Fleet at Suisun Bay in California. ''Granville S. Hall'' was taken out of reserve in May 1953, and transferred to the US Navy and designated YAG-40. She was fitted out with scientific instruments of all kinds, including nuclear detection and measurement devices which enabled her to explore fallout areas and carry out ship decontamination tests. ''Granville S. Hall'' was also equipped with remote control devices which allowed her to be operated by a small crew in a sealed hold, and thus making her able to explore fallout areas of heavy concentration. She took part in the Operation Castle atomic bomb tests from March to May 1954 and other radioactivity and remote control tests. She was placed in the San Diego Reserve Fleet in late 1957. Reactivated again in May 1962, she was placed in commission 20 October 1962 as USS ''Granville S. Hall'' (YAG-40) near San Francisco, California with Lieutenant Commander H. W. Kepler in command. ''Granville S. Hall'' and her sister ship, were ordered to Pearl Harbor Hawaii arriving there 24 November for underway training. Following completion of training she resumed her scientific work. During the remainder of the 1960s, AG-40 served as a floating laboratory and administrative command ship during Project SHAD ("Shipboard Hazards & Defense") and Project 112, where their mission was to evaluate the effectiveness of shipboard detection and protective procedures against biological/chemical warfare agents and to determine the distance released agents could travel. A measure of Plutonium contamination on Johnston Atoll was another mission for the ship. During the remainder of the decade, she served in connection with Project SHAD ("Shipboard Hazards & Defense"), an investigation of the threats posed to Navy ships by chemical and biological agents. These missions ended in the early 1970s and, in May 1971 after a rescue mission to the La Balsa expedition, ''Granville S. Hall'' was stricken from the Naval Vessel Register and turned over to the Maritime Administration. She was sold for scrapping in March 1972. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「USS Granville S. Hall (YAG-40)」の詳細全文を読む スポンサード リンク
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