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Rainbow-class submarine

Type of British submarines in service before and during WWII From Wikipedia, the free encyclopedia

Rainbow-class submarine
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The Rainbow-class submarine or R class was a quartet of patrol submarines built for the Royal Navy in the early 1930s.

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Design and description

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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 (2,063 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).[2]

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.[2]

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.[3]

Boats

Six boats were ordered in February 1929 but, following the May 1929 general election, the new government suspended the construction of two boats in August due to economic considerations; they were subsequently cancelled.[4]

More information Name, Builder ...

It is often stated that the Enrico Toti sank HMS Rainbow. However, the submarine Enrico Toti sank was HMS Triad.[5]

Notes

References

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