Italian submarine Diamante
| History | |
|---|---|
 Kingdom of Italy | |
| Name | Diamante |
| Builder | Cantieri navali Tosi di Taranto, Taranto |
| Laid down | 1931 |
| Launched | 21 May 1933 |
| Fate | Sunk, 20 June 1940 |
| General characteristics | |
| Class and type | Sirena-class submarine |
| Displacement | |
| 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 | |
| Propulsion |
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| Speed |
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| Range |
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| Armament |
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Diamante was one of a dozen Sirena-class submarines, the second sub-class of the 600 Series of coastal submarines built for the Regia Marina (Royal Italian Navy) during the early 1930s.
Design and description
[edit]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]
Construction and career
[edit]Diamante was laid down by Cantieri navali Tosi di Taranto at their Taranto shipyard in 1931, launched on 21 May 1933 and completed the following year.[1] The boat was lost on 20 June 1940 off Tobruk sunk by the British submarine Parthian.
Notes
[edit]References
[edit]- 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.
- 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.
- Colombo, Lorenzo (May 27, 2024). "R.Smg. Diamante". regiamarina.net. Cristiano D'Adamo. Retrieved May 27, 2024.
Operational History
