Argo-class submarine

Argo-class submarine (Argo)
Class overview
Builders	Cantieri Riuniti dell'Adriatico, Monfalcone
Operators	Regia Marina
Built	1936
In commission	1937–1943
Completed	2
Lost	1
Scrapped	1
General characteristics
Type	Submarine
Displacement	793 t (780 long tons) (surfaced) 1,016 t (1,000 long tons) (submerged)
Length	63.15 m (207 ft 2 in)
Beam	6.93 m (22 ft 9 in)
Draft	4.46 m (14 ft 8 in)
Installed power	1,500 bhp (1,100 kW) (diesels) 800 hp (600 kW) (electric motors)
Propulsion	2 shafts; diesel-electric 2 × diesel engines 2 × electric motors
Speed	14 knots (26 km/h; 16 mph) (surfaced) 8 knots (15 km/h; 9.2 mph) (submerged)
Range	10,176 nmi (18,846 km; 11,710 mi) at 8.5 knots (15.7 km/h; 9.8 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)
Armament	1 × single 100 mm (3.9 in) deck gun 4 × single 13.2 mm (0.52 in) machine guns 6 × 533 mm (21 in) torpedo tubes (4 bow, 2 stern)

The Argo-class was a class of two coastal submarines built by Cantieri Riuniti dell'Adriatico in Monfalcone for Portugal but operated by the Royal Italian Navy (Italian: Regia Marina) after Portugal was unable to pay construction costs. The submarines were built in 1936, and both served in the Mediterranean Sea at the start of the Second World War. The boats were transferred to the BETASOM Atlantic submarine base at Bordeaux in 1940, but returned to the Mediterranean in 1941, where both were sunk within a few days of the September 1943 Italian armistice.^[1]