In 1938, Turkey ordered four ships of the latest I-class from Great Britain. Two of them, however, including Muavenet, were purchased by Great Britain when World War II broke out. Muavenet, which became HMS Inconstant, began her service in the Home Fleet, then was transferred to the Eastern Fleet, where she participated in amphibious operations around Madagascar. In the summer of 1942, the ship was part of convoys to Malta. Later, she fought in the Atlantic, where she escorted northbound convoys and provided cover for the Normandy landings. Finally, in 1946, the ship was returned to Turkey, where she again acquired the name Muavenet in honor of destroyer Muâvenet-i Millîye, which had sunk British battleship Goliath during the Gallipoli campaign of World War I.