|
The is an improved version of the Japan Maritime Self-Defense Force (JMSDF)'s . ==Design== In 2000, the Japan Defense Agency Maritime Staff Office included another two Aegis ships in its five-year budget on top of the four ''Kongō''-class destroyers originally ordered. The ''Atago'' class is fundamentally an improved and scaled up version of ''Kongō''-class destroyers. The class features large accommodation and the ships are capable of flexible operation. One of the most obvious changes is an additional hangar to carry one SH-60K helicopter. In comparison to the ''Kongō'' class/''Arleigh Burke'' class (Flight I) which only had helicopter platforms (but no support equipment), these ships have better helicopter handling facilities. To enhance the ''Atago'' class' function as command centers, the bridge is two decks higher than aboard a ''Arleigh Burke'' class Flight IIA, making their full load displacement over 10,000 tons—the first time for a JMSDF surface combat vessel. The gun caliber has extended from the 54 caliber of the ''Kongō'' class to the 62 caliber with strengthened powder charge capable 38 km firing range. As with other Japanese ships being refit, the American-made Harpoon missiles (such as in the initial configuration of the ''Kongō'' class) have been replaced with the Japanese-made Type 90 (SSM-1B) surface-to-surface guided missiles. Japan has also purchased a manufacturing license for these weapons for use on their ''Kongō''-class Aegis destroyers. Japan Steel Works will manufacture, assemble and test the weapons. The fire-control system for the ''Atago'' class is the Aegis Weapon System Baseline 7 phase 1, which will combine American- and Japanese-manufactured systems to make up the complete Aegis system. The Aegis Weapon System baseline 7 has improved tracking accuracy for vertical targets, and an acquisition capability for small low-altitude targets compared with the Aegis Weapon System baseline 4 and 5, used in ''Kongō'' class. The ''Atago''s also use a new stealthier plain-structure mast, which was originally designed in Japan, rather than familiar lattice type mast. A new modified smokestack and other improvements were also introduced to make the ''Atago''s stealthier. Like the ''Kongō'' class, the ''Atago''-class destroyers are equipped with a comprehensive suite of weapon systems including: * Japan Type 90 (SSM-1B) anti-ship missile * 96-cell Mk-41 VLS (64 cells in the forward area, 32 cells in the stern area) * * RIM-66 Standard surface-to-air missile * * RUM-139 VL ASROC * Two Mark 15 20 mm CIWS gun mounts * Two torpedo mounts in a triple-tube configuration * One Mk 45 Mod 4 127 mm 62-caliber gun, in a stealth-shaped mount. Made by Japan Steel Works under an American license from its original manufacturer. In keeping with Japan's post-war pacifist constitution, the ''Atago'' class does not currently carry the Tomahawk missile (although, in theory at least, use of an anti-ship version is permissible). While the two ships of ''Atago'' class are entering service, the s, ''Tachikaze'' and ''Asakaze'' are to be decommissioned. In 2015, Japan formally began the construction of two new ''Atago'' ships of the improved 27DD subclass. The hull is enlarged for an empty displacement of 8,200 tons to allow for growth space for advanced weapon systems. The COGLAG propulsion system received several improvements to the ships' space, power management and distribution. New weapons are to be incorporated such as anti-ship missiles, and in-development indigenous point-defense lasers and electromagnetic railgun systems. Other improvements include the AN/SPQ-9B surface search radar, a multi-static sonar system, and an enhanced Aegis combat system with better Cooperative Engagement Capability (CEC). The two 27DD vessels are expected to be commissioned in 2020 and 2021.〔(Japan Defense Ministry Unveiled Details of "27DD" Class Railgun & Laser armed AEGIS Destroyer ) - Navyrecognition.com, 22 July 2015〕 In comparison to the Chinese People's Liberation Army Navy's Type 052D destroyer, the upgraded ''Atago''-class vessels are generally a superior ships. Their updated radar enables them to engage ballistic missiles while the Type 052D's capability for ballistic missile defense is unknown. The ''Atago''s have 96 vertical launch silos (VLS) compared to 64, can defend against a broad spectrum of threats to a task force in addition to themselves, have greater useful detection range through CEC, and are built to accommodate future upgrades. The Type 052D has superior offensive capabilities using cruise missiles and being able to hold more anti-ship missiles contained in their VLS; the two designs are matched in terms of main and defensive gun armament and digital networking and information sharing.〔(Japan’s Atago-Class Destroyer vs. China's 052D: Who Wins? ) - Nationalinterest.org, 4 October 2015〕 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「Atago-class destroyer」の詳細全文を読む スポンサード リンク
|