HMS Regulus (N88)
RN submarine HMS Regulus (N88)
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| History | |
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 United Kingdom
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| Name: | HMS Regulus |
| Builder: | Vickers Armstrong, Barrow-in-Furness |
| Laid down: | 17 July 1929 |
| Launched: | 11 June 1930 |
| Commissioned: | 7 December 1930 |
| Fate: | Sunk 6 December 1940 near Taranto, probably mined |
| General characteristics | |
| Class and type: | Rainbow-class submarine |
| Displacement: |
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| Length: | 287 ft (87 m) |
| Beam: | 30 ft (9.1 m) |
| Draught: | 16 ft (4.9 m) |
| Propulsion: |
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| Speed: |
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| Complement: | 53 |
| Armament: |
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HMS Regulus (N88) was a Rainbow-class submarine built for the Royal Navy during the 1930s.
The Rainbow-class submarines were designed as improved versions of the Parthian class and were intended for long-range operations in the Far East. The submarines had a length of 287 feet 2 inches (87.5 m) overall, a beam of 29 feet 10 inches (9.1 m) and a mean draft of 13 feet 10 inches (4.2 m). They displaced 1,772 long tons (1,800 t) on the surface and 2,030 long tons (2,060 t) submerged. The Rainbow-class submarines had a crew of 56 officers and ratings. They had a diving depth of 300 feet (91.4 m).
For surface running, the boats were powered by two 2,200-brake-horsepower (1,641 kW) diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a 660-horsepower (492 kW) electric motor. They could reach 17.5 knots (32.4 km/h; 20.1 mph) on the surface and 9 knots (17 km/h; 10 mph) underwater. On the surface, the boats had a range of 7,050 nautical miles (13,060 km; 8,110 mi) at 9.2 knots (17.0 km/h; 10.6 mph) and 62 nmi (115 km; 71 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged.
The boats were armed with six 21-inch torpedo tubes in the bow and two more in the stern. They carried six reload torpedoes for a grand total of fourteen torpedoes. They were also armed with a QF 4.7-inch (120 mm) Mark IX deck gun.
Regulus was laid down by Vickers-Armstrong at Barrow-in-Furness and launched in 1930. Before Second World War she was stationed with Submarine Flotilla #4 on the China station, based out of Hong Kong.
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