Italian submarine Marcantonio Bragadin

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History
Flag of Italy (1861-1946) crowned.svg Kingdom of Italy
NameMarcantonio Bragadin
Builder Cantieri navali Tosi di Taranto, Taranto
Laid down3 February 1927
Launched21 July 1929
Completed16 November 1931
Stricken1 February 1948
Fate Scrapped
General characteristics (after modification)
TypeBragadin Submarine minelayer
Displacement
  • 846  t (833 long tons) (surfaced)
  • 997 t (981 long tons) (submerged)
Length68 m (223 ft 1 in)
Beam7.1 m (23 ft)
Draft4.3 m (14 ft 1 in)
Installed power
  • 1,500  bhp (1,100  kW) (diesels)
  • 1,100 hp (820 kW) (electric motors)
Propulsion
Speed
  • 11.5 knots (21.3 km/h; 13.2 mph) (surfaced)
  • 7 knots (13 km/h; 8.1 mph) (submerged)
Range
  • 4,180  nmi (7,740 km; 4,810 mi) at 4.5 knots (8.3 km/h; 5.2 mph) (surfaced)
  • 86 nmi (159 km; 99 mi) at 2.2 knots (4.1 km/h; 2.5 mph) (submerged)
Test depth90 m (300 ft)
Crew56
Armament

Marcantonio Bragadin was the lead ship of her class of two submarines built for the Regia Marina (Royal Italian Navy) during the late 1920s. The boats participated in the Second World War and was discarded in 1948.

Contents

Design and description

The Bragadin-class submarines were essentially minelaying versions of the earlier Pisani class. They shared that class's problems with stability and had to be modified to correct those problems after completion. They displaced 981 metric tons (966 long tons ) surfaced and 1,167 metric tons (1,149 long tons ) submerged. As built the submarines were 71.5 meters (234 ft 7 in) long, had a beam of 6.15 meters (20 ft 2 in) and a draft of 4.8 meters (16 ft). In 1935 the stern was shortened and the boats were bulged to improve their stability. They now measured 68 meters (223 ft) in length and had a beam of 7.1 meters (23 ft 4 in) and draft of 4.3 meters (14 ft 1 in). They had an operational diving depth of 90 meters (300 ft). Their crew numbered 56 officers and enlisted men. [1]

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 500-brake-horsepower (373 kW) electric motor. They could reach 11.5 knots (21.3 km/h; 13.2 mph) on the surface and 7 knots (13 km/h; 8.1 mph) underwater. On the surface, the Bragadin class had a range of 4,180 nautical miles (7,740 km; 4,810 mi) at 6.5 knots (12.0 km/h; 7.5 mph), submerged, they had a range of 86 nmi (159 km; 99 mi) at 2.2 knots (4.1 km/h; 2.5 mph). [1]

The boats were armed with four internal 53.3 cm (21 in) torpedo tubes in the bow for which they carried six torpedoes. In the stern were two tubes which could accommodate a total of 16 or 24 naval mines, depending on the type. They were also armed with one 102 mm (4 in) deck gun for combat on the surface. Their anti-aircraft armament consisted of two 13.2 mm (0.52 in) machine guns. [2]

Construction and career

Marcantonio Bragadin was laid down by Cantieri navali Tosi di Taranto at their Taranto shipyard on 3 February 1927, launched on 21 July 1929 and completed on 16 November 1931. [3]

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References

  1. 1 2 Bagnasco, p. 144
  2. ↑ Chesneau, p. 308
  3. ↑ Fraccaroli, p. 129

Bibliography

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