Inconstant participated in the assault on Madagascar in May 1942, and attacked and sank the enemy German submarines U-409 in the Mediterranean north-east of Algiers on 12 July 1943 and U-767 while in company with the destroyers and in the English Channel south-west of Guernsey on 18 June 1944. Inconstant was returned to Turkey on 9 March 1946 and renamed Muavenet. She was discarded in 1960.