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The D'Estienne d'Orves class avisos, also known as the A69 type avisos, is a class of avisos, comparable in size to a light corvette, mainly designed for coastal anti-submarine defence, but are also available for high sea escort missions. Built on a simple and robust design, they have an economical and reliable propulsion system which allows them to be used for overseas presence missions. They were initially intended for use by the French navy, but have been acquired by the South African Navy, Argentinian Navy and Turkish Navy.