One of the class, Insidioso, was reinstated during World War II and served in the Règia Marina and the German Kriegsmarine before being sunk by U.S. aircraft in late 1944.

They had twin shafts driven by two Tosi steam turbines that were fired by four Thornycroft boilers.

During World War I, guide rails for laying up to ten mines were added to the ships.

She was scuttled by her crew on 10 September 1943 at Pola, but was raised by the Germans who commissioned her as Wildfang on 8 November.

Wildfang, the last surviving member of the Indomito class, was sunk by U.S. aircraft on 5 November 1944 after just under one year of German service.