 She served in World War II in home waters and the Mediterranean.She was rammed and sunk by the Italian torpedo boat "Generale Achille Papa" on 30 July 1941.In August, 1940, "Cachalot" torpedoed and sank the German submarine "U-51" in the Bay of Biscay and in September the German auxiliary minesweeper M 1604 / "Österreich" hit a mine laid by "Cachalot" and sank.