HMS G4
 HMS G4 | |
| History | |
|---|---|
 United Kingdom | |
| Name: | G4 |
| Builder: | Chatham Dockyard |
| Laid down: | 12 October 1914 |
| Launched: | 23 October 1915 |
| Commissioned: | 3 February 1916 |
| Fate: | Sold for scrap, 27 June 1928 to Cashmore, Newport. |
| General characteristics | |
| Class and type: | G-class submarine |
| Displacement: |
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| 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: |
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| Propulsion: |
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| Speed: |
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| 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: |
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HMS G4 was a British G-class submarine built for the Royal Navy during World War I.
Description
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 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. They had a partial double hull.[1]
For surface running, the boats were powered by two 800-brake-horsepower (597 kW) diesel engines, each driving one propeller shaft. 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 16 knots (30 km/h; 18 mph).[1]
The boats were 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 was revised, however, while they were under construction, the 21-inch tube was moved to the stern and two additional 18-inch tubes were added in the bow. They carried two 21-inch and eight 18-inch torpedoes. The G-class submarines were also armed with a single 3-inch (7.6 cm) deck gun.[1]
Construction and career
After commissioning, she was sent to join 11th Submarine Flotilla at Blyth with Lt-Cdr John Hutchings in command. At some point between 20 August 1916 and 3 October 1916, she went to Scapa Flow and left there to go to Murmansk (then called Romanov), arriving on 20 October 1916. She left there on 15 November, arriving in Kirkwall five days later. HMS G4 then spent the rest of the First World War conducting war patrols in the North Sea from Blyth and was there at the end of the war.
Notes
References
- 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. OCLC 67375475.
- Gardiner, Robert & Gray, Randal, eds. (1984). Conway's All the World's Fighting Ships: 1906–1921. Annapolis, Maryland: Naval Institute Press. ISBN 0-85177-245-5.
- McCartney, Innes (2008). British Submarines of World War I. New Vanguard. 145. Oxford, UK: Osprey. ISBN 978-1-84603-334-6.