The anti-aircraft armament of the "Chacal" class consisted of two 50-caliber "Canon de 75 mm modèle 1924" guns in single mounts positioned amidships. The mounts could elevate to +90° and depress to -10° and the guns could be loaded at any angle up to +75°. Their shells were fired at a muzzle velocity of . The guns had a range of and a ceiling of about . They had a theoretical rate of fire of 15 rounds per minute, but only about half that in service. The ships carried 150 rounds, plus 60 star shells, for each gun, of which 30 rounds could be stowed in ready-use lockers. In 1932, the navy decided that the ships were too top-heavy to accept a director for the guns so they were to be replaced by four twin mounts for Hotchkiss anti-aircraft machineguns. These were installed in 1933–34, together with a dedicated "OPL J.1930" stereoscopic rangefinder. The substitution saved about of weight, although the machineguns proved to have limited utility in combat. Combat operations in 1939 had shown the French that their anti-aircraft defenses were inadequate and they planned to augment them beginning in 1940 by replacing the mainmast with a platform for a twin-gun mount for the Canon de 37 mm Modèle 1925 light AA gun. This was only installed aboard "Panthère" before the armistice with Germany and it was removed shortly afterwards.