 A group of British "A" class submarines
| |
| History | |
|---|---|
 United Kingdom | |
| Name | HMS A6 |
| Builder | Vickers, Sons & Maxim Ltd. Barrow-in-Furness |
| Laid down | 1 September 1903 |
| Launched | 3 March 1904 |
| Commissioned | 23 March 1905 |
| Fate | Sold, 8 October 1920 for breaking up |
| General characteristics | |
| Class & type | A-class submarine |
| Displacement |
|
| Length | 105 ft (32.0 m) |
| Beam | 12 ft 9 in (3.9 m) |
| Draught | 10 ft 8 in (3.3 m) |
| Installed power |
|
| Propulsion |
|
| Speed |
|
| Range | 500 nautical miles (930 km; 580 mi) at 10 kn (19 km/h; 12 mph) surfaced |
| Complement | 2 officers and 9 ratings |
| Armament | 2 × 18-inch (45 cm) torpedo tubes |
HMS A6 was an A-class submarine built for the Royal Navy in the first decade of the 20th century.
A6 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 550-brake-horsepower (410 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 11 knots (20 km/h; 13 mph) on the surface and 7 knots (13 km/h; 8.1 mph) underwater.[1] On the surface, A6 had a range of 500 nautical miles (930 km; 580 mi) at 10 knots (19 km/h; 12 mph); 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]
A6 was ordered as part of the 1903–04 Naval Programme from at Vickers.[4] She was laid down at the shipyard in Barrow-in-Furness on 1 September 1903, launched on 3 March 1904 and completed on 23 March 1905.[2]
A6 ran aground on a sandbank in Sandown harbour on 31 July 1906, but received little damage.[5]
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