Velella was sunk on September 7, 1943, whereas travelling south from Naples to oppose the Allied landings in Salerno. The 63-metre-long Argo-class submarine sank inside minutes.
All 52 crew members from the Italian Royal Navy on board the submarine misplaced their lives within the World Warfare II assault.
The deaths got here 4 days after Italy had signed an armistice with allies Germany, Austria and Hungary on September 3, 1943.
Seventy-nine years after the ambush, divers have filmed the primary high-quality footage of Velella, confirming the id of the wreck.
The positioning of the wreck was pinpointed in Could of 2003, 16 kilometres from Castellabate in south-western Italy, at a depth of 140 metres.
"We carried out two dives for a interval of just about 5 hours, with a presence on the seabed of greater than 25 minutes, one of many divers, Andrea Bada, instructed Italian broadcaster TG2.
"That enabled us to seize photos that supplied sure identification of the Velella submarine."
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In video footage from the dive, the intact bow, stern planes and metal superstructure could be recognized.