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was the third of five main administrative districts of the pre-war Imperial Japanese Navy. Its territory included the western and southern coastline of Kyūshū, the Ryukyu Islands, Taiwan and Korea, as well as patrols in the East China Sea and the Pacific Sasebo also contained the Sasebo Naval Arsenal, specializing mostly in destroyers and smaller warships; and its anchorage was one of the largest in Japan. The District encompassed anchorages at Imari and Hirado ports as well as the designated third echelon naval ports of Takeshiki (Tsushima), Kagoshima, Kuji (Amami-Ōshima), and Wakamatsu (Gotō Islands) ==History== The location of Sasebo facing China and Korea, and near the foreign treaty port of Nagasaki was recognized of strategic importance by the leaders of the early Meiji government and early Imperial Japanese Navy. In 1883, the then Lieutenant Commander Tōgō Heihachirō nominated what was a tiny fishing village as the ideal location for a naval base. With the formation of the navy in 1886, Japan was divided into five each with a headquarters . Sasebo was designated as the "Third Naval District" (第三海軍区, ''dai-san kaigunku''), and its harbor was dredged, a breakwater constructed and docking, coaling and repair facilities for warships were established, and the military base was officially opened in 1889. To stress the importance of the base, Emperor Meiji made a personal inspection tour in 1890. The base was connected to the rest of Japan by rail in 1898, and the Sasebo Naval Arsenal, which would eventually expand to become one of the largest shipyards in Japan for the construction of smaller warships, began operation in 1903. As with the other Naval Districts, Sasebo was intended to operate as independently as possible, and facilities included armories, production factories for torpedoes, naval mines and naval artillery (and associated ammunition), and also a naval hospital and training centers. In concept, the Naval District was similar to the United States Navy Sea Frontiers concept. the Naval District maintained a small garrison force of ships and Naval Land Forces which reported directly to the Guard District commander, and hosted detachments of the on a temporary assignment basis. Sasebo was the closest ship repair facility for the Imperial Japanese Navy to the combat zones of the Russo-Japanese War and saw considerable activity during that conflict. In 1920, the Japanese navy established an air wing and a wireless communications center in 1922. In 1934, the ''Tomozuru'' capsized off Sasebo with loss of most of its crew, and leaving behind serious questions about the basic design of many Japanese warships. In 1941, base facilities were expanded considerably for the Pacific War. The base also hosted a major portion of the Japanese Special Naval Landing Forces. The Imperial Japanese Navy had some 60,000 people working in the dock yard and associated naval stations at the peak of World War II, outfitting ships, submarines and aircraft. However, most of the base was destroyed by American air raids on Japan on June 28, 1945. After the surrender of Japan, Sasebo was occupied by the U.S. Marine Corps' Fifth Division, and the Sasebo Naval District was formally abolished on November 30, 1945. Part of the former base facilities is still in use by the United States Navy as the United States Fleet Activities Sasebo and by the Japan Maritime Self-Defense Force. One of the former base structures is now a museum. 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「Sasebo Naval District」の詳細全文を読む スポンサード リンク
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