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Coordinates: 50°31.41′N 2°11.25′W / 50.52350°N 2.18750°W / 50.52350; -2.18750
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* {{cite book |editor1-last=Gardiner|editor1-first=Robert|editor2-last=Gray|editor2-first=Randal|title=Conway's All the World's Fighting Ships: 1906–1921|year=1984|location=Annapolis, Maryland|publisher=Naval Institute Press|isbn=0-85177-245-5|lastauthoramp=y}}
* {{cite book |editor1-last=Gardiner|editor1-first=Robert|editor2-last=Gray|editor2-first=Randal|title=Conway's All the World's Fighting Ships: 1906–1921|year=1984|location=Annapolis, Maryland|publisher=Naval Institute Press|isbn=0-85177-245-5|lastauthoramp=y}}
*{{cite web|url=http://www.rnsubs.co.uk/Boats/BR3043/chapter07.php|title=The Development of HM Submarines From Holland No. 1 (1901) to Porpoise (1930) (BR3043)|last=Harrison|first=A. N.|date=January 1979|publisher=Submariners Association: Barrow in Furness Branch|accessdate=19 August 2015}}
*{{cite web|url=http://www.rnsubs.co.uk/Boats/BR3043/chapter07.php|title=The Development of HM Submarines From Holland No. 1 (1901) to Porpoise (1930) (BR3043)|last=Harrison|first=A. N.|date=January 1979|publisher=Submariners Association: Barrow in Furness Branch|accessdate=19 August 2015|deadurl=yes|archiveurl=https://web.archive.org/web/20150519040644/http://www.rnsubs.co.uk/Boats/BR3043/chapter07.php|archivedate=19 May 2015|df=}}


==External links==
==External links==

Revision as of 09:11, 27 October 2017

HMS A3
History
United Kingdom
NameHMS A3
BuilderVickers, Sons & Maxim Ltd. Barrow-in-Furness, England
Laid down6 November 1902
Launched9 March 1903
Commissioned13 July 1904
FateSunk, 12 May 1912
General characteristics
Class and typeTemplate:Sclass2- submarine
Displacement
  • 190 long tons (193 t) surfaced
  • 206 long tons (209 t) submerged
Length105 ft (32.0 m)
Beam12 ft 9 in (3.9 m)
Draught10 ft 8 in (3.3 m)
Installed power
Propulsion
  • 1 × 16-cylinder Wolseley petrol engine
  • 1 × electric motor
Speed
  • 10 knots (19 km/h; 12 mph) surfaced
  • 7 knots (13 km/h; 8.1 mph) submerged
Range320 nautical miles (590 km; 370 mi) at 10 kn (19 km/h; 12 mph) surfaced
Complement2 officers and 9 ratings
Armament2 × 18-inch (45 cm) torpedo tubes

HMS A3 was an Template:Sclass2- submarine built for the Royal Navy in the first decade of the 20th century.

Design and description

A3 was a member of the first British class of submarines, although slightly larger, faster and more heavily armed than the lead ship, HMS A1. The submarine had a length of 105 feet 1 inch (32.0 m) overall, a beam of 12 feet 9 inches (3.9 m) and a mean draft of 10 feet 8 inches (3.3 m). They displaced 190 long tons (190 t) on the surface and 206 long tons (209 t) submerged. The A-class submarines had a crew of 2 officers and 11 ratings.[1]

For surface running, the boats were powered by a single 16-cylinder 450-brake-horsepower (336 kW) Wolseley petrol engine that drove one propeller shaft. When submerged the propeller was driven by a 150-horsepower (112 kW) electric motor. They could reach 10 knots (19 km/h; 12 mph) on the surface and 7 knots (13 km/h; 8.1 mph) underwater. On the surface, A3 had a range of 320 nautical miles (590 km; 370 mi) at 10 knots (19 km/h; 12 mph);[1] submerged the boat had a range of 30 nautical miles (56 km; 35 mi) at 5 knots (9.3 km/h; 5.8 mph).[2]

The boats were armed with two 18-inch (45 cm) torpedo tubes in the bow. They could carry a pair of reload torpedoes, but generally did not as doing so that they had to compensate for their weight by an equivalent weight of fuel.[3]

Construction and career

A3 was built at Vickers, Barrow-in-Furness and was commissioned on 13 July 1904. She was accidentally rammed while surfacing by the submarine tender Hazard in the English Channel off the Isle of Wight on 2 February 1912 and sank with the loss of all on board.[4][5] The wreck was salvaged and subsequently sunk as a gunnery target in the English Channel near Portland Bill on 12 May 1912, where she remains today. In July 2016 the wreck of A3 was officially designated as a protected site.[6]

Notes

  1. ^ a b Gardiner & Gray, p. 86
  2. ^ Akermann, p. 120
  3. ^ Harrison, Chapter 27
  4. ^ *Innes McCartney (2002). Lost Patrols: Submarine Wrecks of the English Channel.
  5. ^ Gray, Edwyn (2003). Disasters of the Deep A Comprehensive Survey of Submarine Accidents & Disasters. Leo Cooper. pp. 69–70. ISBN 0-85052-987-5.
  6. ^ "British A3 submarine sunk off Jurassic Coast in 1912 gets protected status". Dorset Echo. Newsquest Media. 22 July 2016. Retrieved 24 July 2016.

References

50°31.41′N 2°11.25′W / 50.52350°N 2.18750°W / 50.52350; -2.18750