Italian submarine Ruggiero Settimo
Reggio Settimo was one of two Settembrini-class submarines built for the Regia Marina (Royal Italian Navy) during the early 1930s.
| History | |
|---|---|
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| Name: | Ruggerio Settimo |
| Builder: | Cantieri navali Tosi di Taranto, Taranto |
| Launched: | 29 March 1931 |
| Stricken: | 23 March 1947 |
| General characteristics | |
| Class and type: | Settembrini-class submarine |
| Displacement: | |
| Length: | 69.11 m (226 ft 9 in) |
| Beam: | 6.61 m (21 ft 8 in) |
| Draft: | 4.45 m (14 ft 7 in) |
| Installed power: | |
| Propulsion: |
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| Speed: |
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| Range: |
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| Test depth: | 80 m (260 ft) |
| Crew: | 56 |
| Armament: |
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Design and description
The Settembrini class was an improved and enlarged version of the preceding Mameli-class submarines. They displaced 953 metric tons (938 long tons) surfaced and 1,153 metric tons (1,135 long tons) submerged. The submarines were 69.11 meters (226 ft 9 in) long, had a beam of 6.61 meters (21 ft 8 in) and a draft of 4.45 meters (14 ft 7 in).[1] They had an operational diving depth of 80 meters (260 ft).[2] Their crew numbered 56 officers and enlisted men.[1]
For surface running, the boats were powered by two 1,500-brake-horsepower (1,119 kW) diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a 700-horsepower (522 kW) electric motor. They could reach 17.5 knots (32.4 km/h; 20.1 mph) on the surface and 7.7 knots (14.3 km/h; 8.9 mph) underwater.[2] On the surface, the Settembrini class had a range of 6,200 nautical miles (11,500 km; 7,100 mi) at 7.3 knots (13.5 km/h; 8.4 mph);[1] submerged, they had a range of 100 nmi (190 km; 120 mi) at 3 knots (5.6 km/h; 3.5 mph).[2]
The boats were armed with eight 53.3-centimeter (21 in) torpedo tubes, four each in the bow and stern for which they carried a total of 12 torpedoes. They were also armed with a single 102-millimeter (4 in) deck gun forward of the conning tower for combat on the surface. Their anti-aircraft armament consisted of two or four 13.2-millimeter (0.52 in) machine guns.[1][2]
Construction and career
Ruggerio Settimo was launched by Cantieri navali Tosi di Taranto at their Taranto shipyard on 29 March 1931.[1]
Notes
- Chesneau, p. 308
- Bagnasco, p. 147
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.
- 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.