HMS E8
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| History | |
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| Name: | HMS E8 |
| Builder: | HM Dockyard, Chatham |
| Cost: | £105,700 |
| Laid down: | 30 March 1912 |
| Commissioned: | 18 June 1914 |
| Fate: | Scuttled, 4 April 1918 |
| General characteristics | |
| Class and type: | E-class submarine |
| Displacement: |
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| Length: | 178 ft (54 m) |
| Beam: | 15 ft 5 in (4.70 m) |
| Propulsion: |
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| Speed: |
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| Range: |
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| Complement: | 31 |
| Armament: | 4 × 18 inch (450 mm) torpedo tubes (1 bow, 2 beam, 1 stern) |
HMS E8 was a British E-class submarine built at Chatham Dockyard. She was laid down on 30 March 1912 and was commissioned on 18 June 1914. She cost £105,700. During World War I she was part of the British submarine flotilla in the Baltic.
The early British E-class submarines, from E1 to E8, had a displacement of 652 tonnes (719 short tons) at the surface and 795 tonnes (876 short tons) while submerged. They had a length overall of 180 feet (55 m) and a beam of 22 feet 8.5 inches (6.922 m), and were powered by two 800 horsepower (600 kW) Vickers eight-cylinder two-stroke diesel engines and two 420 horsepower (310 kW) electric motors. The class had a maximum surface speed of 16 knots (30 km/h; 18 mph) and a submerged speed of 10 knots (19 km/h; 12 mph), with a fuel capacity of 50 tonnes (55 short tons) of diesel affording a range of 3,225 miles (5,190 km; 2,802 nmi) when travelling at 10 knots (19 km/h; 12 mph), while submerged they had a range of 85 miles (137 km; 74 nmi) at 5 knots (9.3 km/h; 5.8 mph).
The 'Group 1' E class boats were armed with four 18 inch (450 mm) torpedo tubes, one in the bow, one either side amidships, and one in the stern; a total of eight torpedoes were carried. Group 1 boats were not fitted with a deck gun during construction, but those involved in the Dardanelles campaign had guns mounted forward of the conning tower while at Malta Dockyard.
E-Class submarines had wireless systems with 1 kilowatt (1.3 hp) power ratings; in some submarines, these were later upgraded to 3 kilowatts (4.0 hp) systems by removing a midship torpedo tube. Their maximum design depth was 100 feet (30 m) although in service some reached depths of below 200 feet (61 m).
Her complement was three officers and 28 men.
On 5 August 1914, she was towed by the destroyer Ariel to Terschelling along with E6 which was towed by the destroyer Amethyst. E6 and E8 then made the first Heligoland Bight patrol.
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