 The submarine accomplished four round missions to Libya carrying 194 ton of cargo.Decommissioned on 1 April 1943, "Enrico Toti" was converted into a blockship at Taranto, her hull being used as submarines' battery charger.It was long believed that HMS "Triad" had been sunk by a mine, and that the ship sunk by the "Enrico Toti" was in fact the "R"-class submarine , which was patrolling nearby and had not been in contact.