HMS A3
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| Career | 
|
|---|---|
| Ordered: | |
| Laid down: | |
| Launched: | |
| Commissioned: | July 13 1904 |
| Decommissioned: | |
| Fate: | May 12 1912 sunk as gunnery target |
| Struck: | |
| General Characteristics | |
| Displacement: | 190 tons surfaced, 207 tons submerged |
| Length: | 105.25 feet (32 m) |
| Beam: | 12.75 feet (3.9 m) |
| Draught: | |
| Propulsion: | 16 cylinder Wolseley 450 hp (336 kW) gasoline engine, 150 horsepower (112 kW) electric motor |
| Speed: | maximum 10.5 knots (19 km/h) surfaced, 7 knots (13 km/h) dived |
| Range: | 360 nautical miles (667 km) at 10.5 knots (19 km/h) surfaced, 20 nautical miles (37 km) submerged at 5 knots (9 km/h) |
| Complement: | 11 (2 officers and 9 ratings) |
| Armament: | Two 18 inch (457 mm) torpedo tubes, plus two reloads |
HMS A3 was an early Royal Navy submarine.
She was a member of the first British A-class of submarines, although slightly bigger than the lead boat, HMS A1. She was built at Vickers, Barrow-in-Furness and was commissioned on July 13 1904. She was accidentally rammed whilst surfacing by the submarine tender HMS Hazard off the Isle of Wight on February 2 1912 and sunk with the loss of all on board. The wreck was salvaged and subsequently sunk as a gunnery target near Portland Bill on May 12 1912 where she remains today.