 During the 1960s the entire class were modernised and modified as either flotilla flagships, anti-aircraft guided missile or anti-submarine destroyers.Three ships – "Surcouf", "Cassard", and "Chevalier Paul" – were converted into flotilla flagships ("conducteurs de flottilles") between 1960 and 1962.One 57 mm gun turret, two triple torpedo launchers and two 20 mm guns were removed in order to enlarge the superstructure to accommodate an admiral, his staff, and additional communications equipment.