Summary
The Settembrini class was a pair of submarines built for the Regia Marina (Royal Italian Navy) during the late 1920s. They played a minor role in the Spanish Civil War of 1936–1939 supporting the Spanish Nationalists.
| Class overview | |
|---|---|
| Builders | Cantieri navali Tosi di Taranto, Taranto |
| Operators |  Regia Marina |
| Preceded by | Bragadin class |
| Succeeded by | Argo class |
| In commission | 1931–1948 |
| Completed | 2 |
| Lost | 1 |
| Scrapped | 1 |
| General characteristics | |
| Type | 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 |
|
| Speed |
|
| Range |
|
| Test depth | 80 m (260 ft) |
| Crew | 56 |
| Armament |
|
Design and description edit
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]
Boats edit
| Ship | Builder[1] | Laid down[3] | Launched[3] | Completed[3] | Fate[3] |
|---|---|---|---|---|---|
| Luigi Settembrini | Cantiere Navale Triestino, Trieste | 16 April 1928 | 28 September 1930 | 25 January 1931 | Sunk in collision with USS Frament 15 November 1944 |
| Ruggiero Settimo | 16 June 1928 | 29 March 1931 | 25 April 1932 | Stricken from the Navy List 23 March 1947 |
Service history edit
During the Spanish Civil War, Luigi Settembrini made one patrol in the Eastern Mediterranean in September 1937 during which she sank a Soviet cargo ship.[4]
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.
- Fraccaroli, Aldo (1968). Italian Warships of World War II. Shepperton, UK: Ian Allan. ISBN 0-7110-0002-6.
- 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.
External links edit
- Luigi Settembrini Marina Militare website
