Sirena-class submarine

The Sirena-class submarines were the second sub-class of the 600 Series of coastal submarines built for the Regia Marina (Royal Italian Navy) during the early 1930s. Of the dozen boats built of this class, only one survived World War II.

Class overview
Operators:  Regia Marina
Preceded by: Argonauta class
Succeeded by: Perla class
Built: 1931–1934
In commission: 1933–1948
Completed: 12
Lost: 11
Scrapped: 1
General characteristics
Type: Submarine
Displacement:
  • 691 t (680 long tons) (surfaced)
  • 850 t (837 long tons) (submerged)
Length: 60.18 m (197 ft 5 in)
Beam: 6.45 m (21 ft 2 in)
Draft: 4.7 m (15 ft 5 in)
Installed power:
  • 1,350 bhp (1,010 kW) (diesels)
  • 800 hp (600 kW) (electric motors)
Propulsion:
Speed:
  • 14 knots (26 km/h; 16 mph) (surfaced)
  • 7.5 knots (13.9 km/h; 8.6 mph) (submerged)
Range:
  • 5,000 nmi (9,300 km; 5,800 mi) at 8 knots (15 km/h; 9.2 mph) (surfaced)
  • 72 nmi (133 km; 83 mi) at 4 knots (7.4 km/h; 4.6 mph) (submerged)
Armament:

Design and description

The Sirena class was an improved and enlarged version of the preceding Argonauta-class submarines. They displaced 691 metric tons (680 long tons) surfaced and 850 metric tons (837 long tons) submerged. The submarines were 61.5 meters (201 ft 9 in) long, had a beam of 5.7 meters (18 ft 8 in) and a draft of 4.7 meters (15 ft 5 in). Their crew numbered 45 officers and enlisted men.[1]

For surface running, the boats were powered by two 675-brake-horsepower (503 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 7.5 knots (13.9 km/h; 8.6 mph) underwater.[2] On the surface, the Sirena class had a range of 5,000 nautical miles (9,300 km; 5,800 mi) at 8 knots (15 km/h; 9.2 mph);[1] submerged, they had a range of 72 nmi (133 km; 83 mi) at 4 knots (7.4 km/h; 4.6 mph).[2]

The boats were armed with six 53.3-centimeter (21 in) torpedo tubes, four in the bow and two in the stern for which they carried a total of 12 torpedoes. They were also armed with a single 100 mm (3.9 in) deck gun forward of the conning tower for combat on the surface. The anti-aircraft armament consisted of two or four 13.2-millimeter (0.52 in) machine guns.[1]

Ships

ShipBuilder[1]Launched[1]Fate[1]
AmetistaOdero-Terni-Orlando, Muggiano26 April 1933Scuttled, 12 September 1943
AnfitriteCantieri Riuniti dell'Adriatico, Monfalcone5 August 1933Sunk, 6 March 1941
DiamanteCantieri navali Tosi di Taranto, Taranto21 May 1933Sunk, 20 June 1940
GalateaCantieri Riuniti dell'Adriatico, Monfalcone5 October 1933Struck, 1 February 1948
Naiade27 March 1933Sunk, 14 December 1940
Nereide25 May 1933Sunk, 13 July 1943
Ondina2 December 1933Sunk, 11 July 1942
RubinoCantieri navali del Quarnaro, Fiume29 March 193329 June 1940
SirenaCantieri Reuniti dell'Adriatico, Monfalcone26 January 1933Scuttled, 9 September 1943
SmeraldoCantieri navali Tosi di Taranto, Taranto23 July 1933Lost, September 1941
TopazioCantieri navali del Quarnaro, Fiume15 May 1933Sunk, 12 September 1943
ZaffiroOdero-Terni-Orlando, Muggiano28 June 1933Sunk, June 1942
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See also

Notes

  1. Chesneau, p. 309
  2. Bagnasco, p. 148

References

  • Bagnasco, Erminio (1977). Submarines of World War Two. Annapolis, Maryland: Naval Institute Press. ISBN 0-87021-962-6.
  • Brescia, Maurizio (2012). Mussolini's Navy: A Reference Guide to the Regina Marina 1930–45. Annapolis, Maryland: Naval Institute Press. ISBN 978-1-59114-544-8.
  • Chesneau, Roger, ed. (1980). Conway's All the World's Fighting Ships 1922–1946. Greenwich, UK: Conway Maritime Press. ISBN 0-85177-146-7.
  • Frank, Willard C., Jr. (1989). "Question 12/88". Warship International. XXVI (1): 95–97. ISSN 0043-0374.
  • Rohwer, Jürgen (2005). Chronology of the War at Sea 1939–1945: The Naval History of World War Two (Third Revised ed.). Annapolis, Maryland: Naval Institute Press. ISBN 1-59114-119-2.


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