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The ''Cassard''-class (Type F70 AA) is a class of air-defence destroyers of the French Navy. The class is an air defence variant of the . The two classes have a different armament and propulsion system mounted on an identical hull. Their primary role is to provide air cover for a fleet, an aeronaval group, or a convoy. They can also be used for research, identification or presence missions. Both ships are assigned to the ''Force d'Action Navale''.〔Gardiner and Chumbly, p.115〕 The experience gained during the design and construction of the ''Cassard'' type was used for the design of the . ==Design== The ''Cassard'' class frigate was initially designed to replace the four anti-air warfare vessels in service at the time. Initially procured with four ships in the class, (the third and fourth hulls authorized for construction in 1983), the class was cut back to two vessels after the United States chose to terminate the production of the Standard SM-1MR missile. The prolonged design period led to the plans being redrawn several times.〔 The class shares a common hull design with the ''Georges Leygues'' class. The superstructure is composed of a lightweight aluminum alloy that is resistant to fire and corrosion. However the adoption of a similar propulsion system was abandoned early on. The hot exhaust from the Olympus turbines found on the ''Georges Leygues'' class was thought to be incompatible with the numerous arrays required in the new design.〔 The ships are crewed by 244 personnel but can accommodate 251.〔 The class carries one anti-submarine helicopter on a deck placed aft with a hangar provided for storage.〔 Originally supplied with a Eurocopter AS 565 Panther, they were later replaced with the Westland Lynx.〔 The SAMAHE 210 helicopter handling system is adaptable to different types of undercarriages on helicopters and had munitions trucks to position weapon loadouts to assist the arming of the helicopters.〔 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「Cassard-class frigate」の詳細全文を読む スポンサード リンク
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