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AVR ''661'' is an R-1 type United States Air Force "crash boat", a boat used in air-sea rescues.〔 〕 It is 85 feet long and has two Packard Marine 4M-2500 engines of 1500 horse power. It has a top speed of 35 knots.〔 The boat was armed with a twin .50 caliber machine gun, a 20 mm anti-aircraft gun and two depth charges.〔 These types of boats were used to rescue aircraft crews at sea. The designation AVR was used for "Aircraft Rescue Vessel",〔 (【引用サイトリンク】title=Dictionary of American Naval Fighting Ships )〕 so it was one of the small, fast craft, that were used for rescuing pilots from downed planes. AVR ''661'' was built in 1943 for the Army Air Corps and served in the Gulf of Mexico during World War II.〔 After the war the Air Force sold many of its crash boats to private parties for use as yachts or commercial vessels.〔 Many others were used as targets and sunk.〔 AVR ''661'' was kept in active service assigned to Tyndall Air Force Base, near Panama City, Florida.〔 During the Vietnam War, AVR ''661'' towed targets for helicopter gunship training and anti-mine training as well as to recover drones.〔 In 1971, the Air Force decided to preserve AVR ''661'' as one of the last remaining crash boats from World War II.〔 She was to be placed on display at Wright-Patterson Air Force Base, near Dayton, Ohio.〔 That plan was scrapped as the boat was too large for the cargo plane.〔 She was then donated to the PT Boat Museum in Memphis, Tennessee〔 That, too, proved problematic. As she was being run upriver to Memphis, she struck a submerged obstruction and damaged her running gear.〔 Once at Memphis, the boat sank at her moorings.〔 The US Naval Sea Cadet Corps expressed an interest in salvaging the crash boat.〔 The boat was placed on a barge and shipped to Chicago. The Sea Cadets plan was to restore the boat and use it as a training vessel and then to donate her to a museum.〔 ==References== 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「AVR 661」の詳細全文を読む スポンサード リンク
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