three destroyers. Alagi launched three torpedoes while on surface. After a minute and 45 seconds a violent explosion was heard, but no information about this action was ever reported in British official documentation. On 3 September 1943 Alagi was deployed to the Gulf of Salerno, and on 7 September under the Zeta Plan, she was sent along with ten other submarines to the Tyrrhenian Sea, between the Gulf of Gaeta and the Gulf of Paola to intercept an anticipated Anglo-American landing in southern Italy. On 9 September 1943, following the announcement of the Armistice, Alagi which at that time was about sixty miles from Augusta headed for Malta, where she arrived on 16 September 1943 along with five other submarines escorted by destroyer . Upon arrival she surrender to the Allies. On 13 October 1943 Alagi together with fifteen other submarines left Malta for mainland Italy. In October 1943, Alagi was transferred to Haifa where she was employed as a training unit for British troops and as a shipping vessel for supplies to the Aegean Islands. She returned to Taranto in December 1944, where she remained inactive until the end of the war. She was sold for scrap on 1 February 1948. Notes References Adua-class submarines World War II submarines of Italy 1936 ships Ships built by Cantieri Riuniti dell'Adriatico Ships built in Monfalcone Friendly fire incidents of World War II