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The of guided missile destroyers serves as the core ship of the Japan Maritime Self-Defense Force (JMSDF)'s Escort Flotillas. Constructed in the 1990s, the ''Kongō'' class are equipped with the Aegis fire control system, being one of the few ship classes outside of the United States to have that capability. ==Design== The ''Kongō'' class employs the highly advanced Aegis fire control system and is armed with the RIM-66 SM-2MR Block II surface-to-air missile, RUM-139 vertically launched anti-submarine rocket, the RGM-84 Harpoon anti-ship missile, two Mark 15 20 mm CIWS gun mounts, two torpedo mounts in a triple tube configuration, and an Oto Melara 127 mm/54 caliber gun. Their Mark 41 vertical launch system can hold 90 missiles. However, in keeping with the defensive mission of the JMSDF and passive role of the Japan Self-Defense Forces in general, the ''Kongō'' class lacks the Tomahawk missile. As on other ships employing the Aegis system, the superstructure is dominated by the SPY-1's phased arrays, which eliminates the need for a traditional rotating antenna. The design of the superstructure also incorporates certain stealth features, designed to reduce radar cross section of the ship; however, as a consequence, the ship is considerably more top-heavy than a typical destroyer and requires a much deeper draft. As such, operations in a littoral (coastal) environment are limited. Overall, ''Kongō''-class destroyers are much larger than traditional destroyers and at 9,485 tons displacement come close to cruisers in size. Because they are built to different operational requirements than the ships, such as for carrying extra equipment for commanding a squadron, the ''Kongō''-class ships' internal arrangement is quite different from the original design on which they are based. Recognisable external features are the vertical mast and the sleek sides of the bridge. The ''Kongō''-class vessels are being modified to serve in a theater missile defense role, with the primary intention of countering North Korean ballistic missiles. This purpose and a financial crisis made the Flight II variant of the ''Arleigh Burke'' class the choice for the follow-on class to the and ''Asakaze''. The new destroyer class was named in 2005. ''Kongō''-class destroyers are powered by four Ishikawajima-Harima LM2500 gas turbines. In December 2007, Japan conducted a successful test of the SM-3 block IA against a ballistic missile aboard . This was the first time a Japanese ship was selected to launch the interceptor missile during a test of the Aegis Ballistic Missile Defense System. In previous tests they provided tracking and communications.〔Agence France-Presse. (Japan shoots down test missile in space: defence minister ). Accessed December 23, 2007.〕〔(MDA press release ). 17 December 2007.〕 Afterward, Japan has also undertaken another two successful Ballistic Missile Defense test aboard in October 2009 and aboard in October 2010. While one test aboard in November 2008 failed to intercept the target. 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「Kongō-class destroyer」の詳細全文を読む スポンサード リンク
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