HMSG12
 A G-class submarine before bow modification.
| |
| History | |
|---|---|
 United Kingdom | |
| Name | G12 |
| Builder | Vickers |
| Laid down | 7 April 1915 |
| Launched | 24 March 1916 |
| Commissioned | 15 June 1916 |
| Fate | Sold, 14 February 1920 to JG Potts |
| General characteristics | |
| Class and type | G-classsubmarine |
| Displacement |
|
| 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 |
|
| Range | 2,400nmi(4,400 km; 2,800 mi) at 12.5 kn (23.2 km/h; 14.4 mph) surfaced |
| Complement | 30 |
| Armament |
|
HMSG12was aBritish G-class submarinebuilt for theRoyal NavyduringWorld War I.
Description
[edit]The G-class submarines were designed by theAdmiraltyin response to a rumour that the Germans were buildingdouble-hulledsubmarines for overseas duties. The submarines had a length of 187 feet 1 inch (57.0 m)overall,abeamof 22 feet 8 inches (6.9 m) and a meandraftof 13 feet 4 inches (4.1 m). Theydisplaced703 long tons (714 t) on the surface and 837 long tons (850 t) submerged. The G-class submarines had a crew of 30 officers andratings.They had a partial double hull.[1]
For surface running, the boats were powered by two 800-brake-horsepower(597 kW)Vickerstwo-strokediesel engines,each driving onepropeller shaft.When submerged each propeller was driven by a 420-horsepower (313 kW)electric motor.They could reach 14.25knots(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 2,400nautical miles(4,400 km; 2,800 mi) at 16 knots (30 km/h; 18 mph).[1]
The boats were intended to be armed with one21-inch (53.3 cm)torpedo tubein the bow and two18-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]
Career
[edit]Like the rest of her class,G12's role was to patrol an area of theNorth Seain search of GermanU-boats.She survived the war and was sold for scrap in 1920.
Notes
[edit]References
[edit]- 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.ISBN978-1-86176-281-8.
- Gardiner, Robert & Gray, Randal, eds. (1985).Conway's All the World's Fighting Ships 1906–1921.Annapolis, Maryland: Naval Institute Press.ISBN0-85177-245-5.
- McCartney, Innes (2008).British Submarines of World War I.New Vanguard. Vol. 145. Oxford, UK: Osprey.ISBN978-1-84603-334-6.