 In the autumn of 1941 the mitrailleuse de 25 mm contre-aéroplanes Modèle 1940, a naval adaptation of an Army anti-aircraft gun, became available. So Volta was modified between August and November 1941 with two single 25 mm guns where the Hotchkiss machine guns had been mounted. Their platform was widened and one additional Browning machine gun was added on each side of the platform. The Hotchkiss guns were moved to the upper deck on either side of the after deck house. A degaussing cable was added during this same refit. Later in the year the SS 6 sonar was scheduled to be replaced by a French copy of the British ASDIC, but it was still sitting on the dockside when Volta was scuttled in Toulon Harbour when the Germans tried to seize the fleet on 27 November 1942 to prevent it from defecting to the Allies. She was raised on 20 May 1943 by the Italians, but no effort was made to repair her. Volta was bombed and sunk on 24 November 1943 and later refloated and scrapped in 1948.
