History
Kingdom of Italy
NameArgo
NamesakeArgo
BuilderCantieri Riuniti dell'Adriatico, Monfalcone
Launched27 November 1936
FateScuttled, 11 September 1943, when the Germans captured the Monfalcone shipyard, but then refloated. Finally scuttled by the Germans on 1 May 1945[1]
General characteristics
Class and typeArgo-class submarine
Displacement
  • 793 t (780 long tons) (surfaced)
  • 1,016 t (1,000 long tons) (submerged)
Length63.15 m (207 ft 2 in)
Beam6.93 m (22 ft 9 in)
Draft4.46 m (14 ft 8 in)
Installed power
  • 1,500 bhp (1,100 kW) (diesels)
  • 800 hp (600 kW) (electric motors)
Propulsion
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 depth90 m (300 ft)
Crew58
Armament

Argo was the lead ship of her class of two submarines ordered by the Portuguese government, but taken over and completed for the Regia Marina (Royal Italian Navy) during the 1930s.

Design and description

The Argo-class submarines displaced 793 metric tons (780 long tons) surfaced and 1,016 metric tons (1,000 long tons) submerged. The submarines were 63.15 meters (207 ft 2 in) long, had a beam of 6.93 meters (22 ft 9 in) and a draft of 4.46 meters (14 ft 8 in).[2] They had an operational diving depth of 90 meters (300 ft).[3] Their crew numbered 46 officers and enlisted men.[2]

For surface running, the boats were powered by two 750-brake-horsepower (559 kW) diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a 400-horsepower (298 kW) electric motor. They could reach 14 knots (26 km/h; 16 mph) on the surface and 8 knots (15 km/h; 9.2 mph) underwater. On the surface, the Argo class had a range of 10,176 nautical miles (18,846 km; 11,710 mi) at 8 knots (15 km/h; 9.2 mph); submerged, they had a range of 100 nmi (190 km; 120 mi) at 3 knots (5.6 km/h; 3.5 mph).[3]

The boats were armed with six internal 53.3-centimeter (21 in) torpedo tubes, four in the bow and two in the stern for which they carried a total of 10 torpedoes. They were also armed with a single 100-millimeter (3.9 in) deck gun, forward of the conning tower, for combat on the surface. The light anti-aircraft armament consisted of four single 13.2-millimeter (0.52 in) machine guns.[2]

Service

Argo was built by Cantieri Riuniti dell'Adriatico in its Monfalcone shipyard. The submarine had initially been ordered in 1931, but was acquired by the Italians when Portugal cancelled the order. She was launched in 1936, and saw action in the Second World War.[2]

Summary of raiding history

Date Name Nationality Tonnage
(GRT)
Fate
1 December 1940 HMCS Saguenay  Royal Canadian Navy 1,358 Damaged
5 December 1940 Silverpine  United Kingdom 5,066 Sunk
12 November 1942 HMS Tynwald  Royal Navy 2,376 Sunk

Notes

  1. ^ "Argo Submarine". Wrecksite.eu. Retrieved 23 Jun 2020.
  2. ^ a b c d Chesneau, p. 308
  3. ^ a b Bagnasco, p. 157

References