Italian submarine Delfino (1930)

Name: Delfino
Builder: CRDA
Laid down: 27 October 1928
Launched: 27 April 1930
Commissioned: 19 June 1931
Fate: Sank after a collision, 23 March 1943
General characteristics [1]
Class and type: Squalo-class submarine
  • 933 long tons (948 t) surfaced
  • 1,142 long tons (1,160 t) submerged
Length: 69.80 m (229 ft 0 in)
Beam: 7.18 m (23 ft 7 in)
Draught: 5.2 m (17 ft 1 in)
  • 15.5 knots (28.7 km/h; 17.8 mph) surfaced
  • 8 knots (15 km/h; 9.2 mph) submerged
  • Surfaced:
  • 1,820 nmi (3,370 km; 2,090 mi) at 15.5 kn (28.7 km/h; 17.8 mph)
  • 5,650 nmi (10,460 km; 6,500 mi) at 8 kn (15 km/h; 9.2 mph)
  • Submerged:
  • 7 nmi (13 km; 8.1 mi) at 8 kn (15 km/h; 9.2 mph)
  • 100 nmi (190 km; 120 mi) at 3 kn (5.6 km/h; 3.5 mph)
Test depth: 100 metres (330 ft)
  • 52
  • (5 officers, 47 crew)
  • 1 × 102 mm (4 in)/35 calibre deck gun
  • 2 × 13.2 mm AA machine guns
  • 8 × 533 mm (21 in) torpedo tubes (4 forward, 4 aft)
  • 12 × torpedoes

Delfino (English: Dolphin) was a Squalo-class submarine that served in the Italian Regia Marina during the Spanish Civil War and World War II. She was named after the Delfino of 1892, the first ever Italian submarine.[1] She was laid down on 27 October 1928, at the Cantieri Riuniti dell'Adriatico (CRDA) shipyard at Monfalcone. She was launched on 27 April 1930 and delivered to the Navy on 19 June 1931.[2]

Service history

After entering service Delfino made two long cruises; to the Black Sea in 1933, and to the eastern Mediterranean in 1934. In December 1936 she patrolled the eastern coast of Spain during Spanish Civil War, making one failed attack against a merchant ship. In 1937, following the Second Italo-Ethiopian War, Delfino was sent to operate in the Red Sea, returning to Messina the following year.[2]

After the entry of Italy into the Second World War in June 1940, Delfino operated in the Aegean Sea. On 15 August 1940 Delfino torpedoed and sank the Greek cruiser Elli, which was at anchor off Tinos. The attack, ordered by Mussolini, was intended to intimidate the Greeks, who were neutral, but suspected (quite correctly) of favouring the British. The Italian government denied Greek accusations of mounting the attack, but the Greeks recovered fragments of the torpedoes, and proved them to be of Italian origin. The Italians in turn accused the British of making the attack using torpedoes bought before the war. The operation succeeded only in inflaming Greek antagonism towards Italy, leading to the outbreak of war two months later. After the war when Greece received the Italian cruiser Eugenio di Savoia as war reparations, it was renamed Elli.[2]

On 29 November 1940, in the northern Aegean, Delfino fired two torpedoes at a convoy, and reported that the Greek destroyer Psara had been hit, but this was never confirmed.[2] On 1 August 1941, on patrol off Tobruk, Delfino was attacked by a British Short Sunderland aircraft of 230 Squadron, and succeeded in shooting it down, and rescuing four men from the crew of twelve.[3] Following further patrols around Sicily and Malta, in February 1942, Delfino was assigned to the Submarine School at Pula for training missions. She returned to active duty in November 1942, based at Taranto, carrying out three transport missions to North Africa, taking over 200 tons of ammunition and fuel. She was then refitted between January to March 1943. On 23 March 1943 Delfino sank an hour after leaving Taranto, after colliding with her escort boat, with the loss of 28 crew.[2]


  1. 1 2 "Sommergibile "DELFINO" (2°)". (in Italian). Retrieved 24 April 2014.
  2. 1 2 3 4 5 Ranieri, Attilio Duilio. "R.Smg Delfino". Retrieved 24 April 2014.
  3. "British Military Aviation in 1941". Retrieved 24 April 2014.

Coordinates: 40°00′N 17°00′E / 40.000°N 17.000°E / 40.000; 17.000

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