British G-class submarine

From Wikipedia, the free encyclopedia
  (Redirected from British G class submarine)
Jump to: navigation, search
G9 at Scapa.jpg
G9
Class overview
Name: G
Builders:
Operators:  Royal Navy
Completed: 14
Cancelled: 1
Lost: 4
Scrapped: 10
General characteristics
Type: Submarine
Displacement:
  • 703 long tons (714 t) surfaced
  • 837 long tons (850 t) submerged
Length: 187 ft 1 in (57.0 m)
Beam: 22 ft 8 in (6.9 m)
Draught: 13 ft 4 in (4.1 m)
Installed power:
Propulsion:
Speed:
  • 14.25 knots (26.39 km/h; 16.40 mph) surfaced
  • 9 knots (17 km/h; 10 mph) submerged
Range: 2,400 nmi (4,400 km; 2,800 mi) at 12.5 kn (23.2 km/h; 14.4 mph) surfaced
Complement: 22
Armament:

The Royal Navy's G-class of diesel/electric submarines were launched between 1914 and 1917, and intended for operations in the North Sea and German Bight in World War I against German U-boats.

Description[edit]

The G-class submarines were designed by the Admiralty in response to a rumour that the Germans were building double-hulled submarines for overseas duties. The submarines had a partial double hull, a length of 187 feet 1 inch (57.0 m) overall, a beam of 22 feet 8 inches (6.9 m) and a mean draft of 13 feet 4 inches (4.1 m). They displaced 703 long tons (714 t) on the surface and 837 long tons (850 t) submerged. The G-class submarines had a crew of 30 officers and other ranks. [1] However, the design offered little improvement in practice, the ships being notoriously slow to dive.[2][3] Most of the class had their bows raised during the war to increase buoyancy and improve seakeeping.

For surface running, the boats were nearly all powered by two 800-brake-horsepower (597 kW) Vickers two-stroke eight-cylinder diesel engines, each driving one propeller shaft; G14 was initially powered by FIAT diesels, but these proved unsuccessful, and were replaced by the standard Vickers engines. It was originally intended to fit more efficient four-stroke MAN and Sulzer diesels to some of the class, but the outbreak of hostilities rendered such plans impossible.[4][5] When submerged each propeller was driven by a 420-horsepower (313 kW) electric motor. They could reach 14.25 knots (26.39 km/h; 16.40 mph) on the surface and 9 knots (17 km/h; 10 mph) underwater. On the surface, the G class had a range of 2,400 nautical miles (4,400 km; 2,800 mi) at full speed.[1]

The boats were originally intended to be armed with one 21-inch (53.3 cm) torpedo tube in the bow and two 18-inch (45 cm) torpedo tubes on the beam. This specification was revised while they were under construction, the 21-inch tube moved to the stern and two additional 18-inch tubes added in the bow; they carried two 21-inch and eight 18-inch torpedoes. The G-class was also armed with a single 3-inch (7.6 cm) deck gun.[1]

Boats[edit]

A total of 14 boats were built at four yards: G1 to G5 by Chatham Dockyard, G6 & G7 by Armstrong Whitworth, G8 to G13 by Vickers, and G14 by Scott's on the Clyde. G15 was ordered from Samuel White's yard at Cowes, Isle of Wight, but cancelled.[6]

  • G1 - Launched 14 August 1915. Sold for scrap 1920.
  • G2 - Launched 23 December 1915. Sank U-78 in the Skagerrak, 28 October 1918. Sold for scrap 1920.
  • G3 - Launched 22 January 1916. Sold for scrap 1920.
  • G4 - Launched 23 October 1915. Sold 1928.
  • G5 - Launched 23 November 1915. Sold 1922.
  • G6 - Launched 7 December 1915. Sold 1921.
  • G7 - Launched 14 March 1916. Last British submarine lost in World War I, on or about 23 October 1918, cause unknown.
  • G8 - Launched 1 May 1916. Lost in the North Sea for reasons unknown on or about 14 January 1918.
  • G9 - Launched 15 June 1916. Sunk in error by HMS Pasley on 16 September 1917. One survivor.
  • G10 - Launched 11 January 1916. Sold 1923.
  • G11 - Launched 22 February 1916. Wrecked on rocks off Howick, Northumberland, in thick fog, 22 November 1918. Two crew drowned while abandoning ship.
  • G12 - Launched 24 March 1916. Sold 1920.
  • G13 - Launched 18 July 1916. Sank UC-43 off Muckle Flugga, 10 March 1917. Sold 1923.
  • G14 - Launched 17 May 1917. Sold 1923.
  • G15 - Ordered 30 September 1914, cancelled 20 April 1915

Notes[edit]

  1. ^ a b c Gardiner & Gray,  p. 90
  2. ^ Arthur, M. (1997). Lost voices of the Royal Navy,  p.84. Hodder & Stoughton Ltd, London. ISBN 0-340-83814-0
  3. ^ Yorkshire-divers.com
  4. ^ Friedman, N. (2014). Fighting the Great War at sea,  p.258. Seaforth Publishing. ISBN 978-1-84832-189-2
  5. ^ http://www.rnsubs.co.uk/Boats/BoatDB2/index.php?id=2&BoatID=155&flag=class[permanent dead link]
  6. ^ www.rnsubmus.co.uk

References[edit]

External links[edit]

Media related to British G class submarines at Wikimedia Commons