Italian submarine Flutto

The Italian submarine Flutto was the name ship of her class of submarines built for the Royal Italian Navy (Regia Marina) during World War II. She obtained no successes during her short career, and was sunk by British ships during the Invasion of Sicily in 1943.

Design and description
The Flutto-class submarines were designed as improved versions of the preceding Argo-class submarine. They displaced 930 t surfaced and 1093 t submerged. The submarines were 63.15 m long, had a beam of 6.98 m and a draft of 4.87 m.

For surface running, the boats were powered by two 1200 bhp diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a 400 hp electric motor. They could reach 16 kn on the surface and 8 kn underwater. On the surface, the Flutto class had a range of 5400 nmi at 8 kn, submerged, they had a range of 80 nmi at 4 kn.

The boats were armed with six internal 53.3 cm torpedo tubes, four in the bow and two in the stern. One reload were stowed for each tube, which gave them a total of twelve torpedoes. They were also armed with one 100 mm deck gun and two 20 mm anti-aircraft guns for combat on the surface.

Construction and career
Flutto was built by CRDA at Monfalcone on the Adriatic coast, and was launched on 19 November 1942. After commissioning and working up Flutto saw action against Allied naval forces in the Mediterranean. She had no successes, and was lost in action in July 1943 operating against Allied forces involved in Operation Husky, the invasion of Sicily. On 11 July 1943 Flutto was on patrol in the Straits of Messina when she was detected and sunk by three British Motor Torpedo Boats (MTB’s 640, 651 and 670) with her entire crew of 49.