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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク 61 cm Type 90 torpedo ： ウィキペディア英語版 61 cm Type 90 torpedo The 61 cm Type 90 torpedo was a surface-fired torpedo used by the Imperial Japanese Navy during World War II. It was used in the s and in most cruisers, including the , , , and heavy cruisers after refits during the 1930s. It was superseded by the Type 93 oxygen-powered torpedo, commonly called the ''Long Lance'', as oxygen generating equipment was installed aboard the cruisers. ==Development== The torpedo was based on a newly developed British Whitehead torpedo. This weapon used a new double-action two-cylinder engine rather than the four-cylinder radial engine used by World War I-era British torpedoes. It was significantly faster (), although it had a much shorter range (only ) than the Japanese 6th and 8th Year torpedoes. Twenty of these were bought with training warheads in 1926 for ¥30,000 each; the British allowed Japanese technicians to observe the manufacturing process and launch trials. Japan bought a manufacturing license in 1928 for ¥150,000.〔Lengerer, p. 103〕 The Japanese did not actually manufacture any of these torpedoes, but combined their technology with the results of independent Japanese research to produce the ''61 cm Type 90''. Testing of the prototypes was prolonged by the need to correct a number of design errors and manufacturing defects, but two prototypes were turned over to the Underwater School in 1931 for practical use. It was informally adopted for use in 1932, but not officially accepted until 15 November 1933. Production initially began at the Kure Naval Arsenal, but the Yokosuka and Sasebo Naval Arsenals began production later.〔Lengerer, pp. 104-5, 110〕 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「61 cm Type 90 torpedo」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.