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HMS A3

Coordinates: 50°31.41′N 2°11.25′W / 50.52350°N 2.18750°W / 50.52350; -2.18750
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HMS A3
History
United Kingdom
NameHMS A3
BuilderVickers, Sons & Maxim, Barrow-in-Furness
Yard number295
Laid down6 November 1902
Launched9 May 1903
Commissioned13 July 1904
Fate
  • Sunk in collision 2 February 1912
  • Refloated
  • Sunk as target 17 May 1912
General characteristics
Class and typeA-class 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 A-class submarine built for the Royal Navy in the first decade of the 20th century. She sank in 1912. The wreck is a Protected Wreck managed by Historic England.

Design and description

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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 9 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] the boat had a range of 30 nautical miles (56 km; 35 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged.[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

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Submarine A3. Sunk at Spithead by collision with HMS Hazard, with the loss of 14 lives, 2 February 1912

A3 was laid down by Vickers, Sons & Maxim as Yard No.295 at Barrow-in-Furness on 6 November 1902 and was launched on 9 May 1903.[4][5] She was commissioned on 13 July 1904.[4] She primarily served as a coastal defense and training submarine in her over seven years of service.

On 2 February 1912, A3, along with several other submarines dispatched from the port of Gosport, conducted training exercises on target ships in the Solent.[6] Whilst attacking the depot ship HMS Hazard, the semi-submerged A3 accidentally collided with its target 2 nautical miles (3.7 km; 2.3 mi) southwest of the East Princessa Buoy in the eastern Solent.[7] Its rudder and propeller were both disabled, and the holed submarine sank immediately with all 14 hands lost.[6] The King sent his immediate condolences to the families of the lost seamen.[7]

The submarine was raised from the bottom on 11 March and was brought into the south lock of Portsmouth dockyard the following day, slung below a salvage lighter; the lock was pumped dry so that the 14 bodies could be recovered and the damages surveyed.[8]

After being towed from Portsmouth to Portland Naval Dockyard, the wreck was towed offshore into Weymouth Bay and, after some technical experiments on the hull, it was sunk as a gunnery target by shells from HMS St. Vincent on 17 May 1912.[9][10] In July 2016 the wreck of A3 was officially designated as a protected site.[11]

Notes

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  1. ^ a b Gardiner & Gray 1985, p. 86.
  2. ^ Akermann 2002, p. 120.
  3. ^ Harrison 1979, chapter 27.
  4. ^ a b "A-3". Shipping and Shipbuilding. Shipping and Shipbuilding Research Trust. Archived from the original on 22 April 2022. Retrieved 22 April 2022.
  5. ^ "Launch of a Submarine". The Westminster Gazette. No. 3154. 11 May 1903. p. 7. Retrieved 22 April 2022 – via British Newspaper Archive.
  6. ^ a b McCartney 2002, p. 77.
  7. ^ a b "Submarine goes down, in collision with HMS Hazard". The Daily News. No. 20, 562. London. 3 February 1912. p. 1. Retrieved 22 April 2022 – via British Newspaper Archive.
  8. ^ "Salving the A3: Arrival at Portsmouth". The Evening News. Vol. XXXVII, no. 10, 771. Portsmouth. 12 March 1912. p. 8. Retrieved 22 April 2022 – via British Newspaper Archive.
  9. ^ McCartney 2002, p. 78.
  10. ^ "Last of the A3: sunk by battleship's guns". The Evening News. Vol. XXXVII, no. 10, 826. Portsmouth. 18 May 1912. p. 5. Retrieved 22 April 2022.
  11. ^ "British A3 submarine sunk off Jurassic Coast in 1912 gets protected status". Dorset Echo. Newsquest Media. 22 July 2016. Retrieved 24 July 2016.

References

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

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