 The base was indirectly attacked by Operation Josephine B in June 1941, a raid to destroy the electricity substation that served the base.The remaining BETASOM boats ended their last offensive patrol in 1943, after which seven BETASOM submarines were adapted to carry critical matériel from the Far East ("Bagnolini", "Barbarigo", "Comandante Cappellini", "Finzi", "Giuliani", "Tazzoli", and "Torelli").Two of these were sunk by the Allies, two were captured in the Far East by the Germans after the Italian surrender in the Armistice of Cassibile of September 1943, and used by them, and a fifth was captured in Bordeaux by the Germans, but not used.