Italian submarine Delfino (1930)

	Sister ship Tricheco before her christening ceremony
History
Italy
Name	Delfino
Namesake	Dolphin
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
Class & type	Squalo-class submarine
Displacement	920 t (905 long tons) (surfaced); 1,125 t (1,107 long tons) (submerged);
Length	69.8 m (229 ft)
Beam	7.21 m (23 ft 8 in)
Draft	5.19 m (17 ft)
Installed power	3,000 bhp (2,200 kW) (diesels); 1,300 bhp (970 kW) (electric motors);
Propulsion	2 shafts; diesel-electric; 2 × diesel engines; 2 × electric motors;
Speed	15.1 knots (28.0 km/h; 17.4 mph) (surfaced); 8 knots (15 km/h; 9.2 mph) (submerged);
Range	5,650 nmi (10,460 km; 6,500 mi) at 8 knots (15 km/h; 9.2 mph) (surfaced); 100 nmi (190 km; 120 mi) at 3 knots (5.6 km/h; 3.5 mph) (submerged);
Test depth	90 m (300 ft)
Complement	53
Armament	8 × 533 mm (21 in) torpedo tubes (4 bow, 4 stern); 1 × 102 mm (4 in) deck gun; 2 × single 13.2 mm (0.52 in) machine guns;

Delfino was one of four Squalo-class submarines built for the Regia Marina (Royal Italian Navy) during the late 1920s. The boat served in World War II and was sunk in 1943 after a collision with another Italian ship.