HMS Regulus (N88)

HMS Regulus (N88) was a Rainbow-class submarine built for the Royal Navy during the 1930s.

RN submarine HMS Regulus (N88)
History
United Kingdom
Name: HMS Regulus
Builder: Vickers Armstrong, Barrow-in-Furness
Laid down: 17 July 1929[1]
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:
  • 1,763 long tons (1,791 t) surfaced
  • 2,030 long tons (2,060 t) submerged
Length: 287 ft (87 m)
Beam: 30 ft (9.1 m)
Draught: 16 ft (4.9 m)
Propulsion:
  • Diesel-electric
  • 2 × Admiralty diesel engines, 4,640 hp
  • 2 × electric motors, 1,635 hp
  • 2 shafts
Speed:
  • 17.5 knots (20.1 mph; 32.4 km/h) surfaced
  • 8.6 kn (9.9 mph; 15.9 km/h) submerged
Complement: 53
Armament:
  • 8 × 21 inch (533 mm) torpedo tubes (6 bow, 2 stern) with 14 reloads
  • 1 × QF 4.7 in Mark IX deck gun

Design and description

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).[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 in (530 mm) 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]

Construction and career

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.

Regulus (Lt.Cdr. Frederick Basil Currie, RN) left Alexandria to patrol in the southern Adriatic on 23 November 1940. She was lost with her entire crew on 6 December 1940 whilst on patrol off Taranto, Italy. In all probability she hit a mine.

Notes
  1. Helgason, Guðmundur. "HMS Regulus (i) (N 88)". Uboat.net.
  2. Bagnasco, pp. 106–07
  3. Chesneau, p. 49
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References
  • Akermann, Paul (2002). Encyclopaedia of British Submarines 1901–1955 (reprint of the 1989 ed.). Penzance, Cornwall: Periscope Publishing. ISBN 1-904381-05-7.
  • Bagnasco, Erminio (1977). Submarines of World War Two. Annapolis, Maryland: Naval Institute Press. ISBN 0-87021-962-6.
  • Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8.
  • Chesneau, Roger, ed. (1980). Conway's All the World's Fighting Ships 1922–1946. Greenwich, UK: Conway Maritime Press. ISBN 0-85177-146-7.
  • McCartney, Innes (2006). British Submarines 1939–1945. New Vanguard. 129. Oxford, UK: Osprey. ISBN 1-84603-007-2.
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