HMS E7
History | |
---|---|
United Kingdom | |
Name | E7 |
Builder | HM Dockyard, Chatham |
Cost | £105,700 |
Laid down | 30 March 1912 |
Launched | 2 October 1913 |
Commissioned | 16 March 1914 |
Fate | Scuttled, 4 September 1915 |
General characteristics | |
Class and type | E-class submarine |
Displacement |
|
Length | 178 ft (54 m) |
Beam | 15 ft 5 in (4.70 m) |
Propulsion |
|
Speed |
|
Range |
|
Complement | 31 |
Armament | 4 × 18 inch (450 mm) torpedo tubes (1 bow, 2 beam, 1 stern) |
HMS E7 was a
Design
The early British E-class submarines, from E1 to E8, had a displacement of 652 long tons (662 t) at the surface and 795 long tons (808 t) 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.[1][2] 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 long tons (51 t) 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).[1]
The early 'Group 1' E class boats were armed with four
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).[1]
Crew
Her complement was three officers and 28 men.[1]
Service history
When war was declared with Germany on 5 August 1914, E7 was based at Harwich, in the 8th Submarine Flotilla of the Home Fleets.[3]
E7 took part in the Second Heligoland Bight Patrol along with E5, D2 and D3. She and the other submarines returned from the patrol on 18 August 1914. Then on 30 June 1915, E7 began a 24-day patrol in the Sea of Marmara. She succeeded in sinking 13 ships and damaging many more.
The German Submarine UB-14 was in port of
The U-boat′s commander, Oberleutnant zur See
Notes
- ^ The type of net in use had electric contact mines that were triggered from the shore. See: Stern: p. 29.
Citations
- ^ ISBN 1-904381-05-7
- ^ "E Class". Chatham Submarines. Archived from the original on 13 August 2015. Retrieved 20 August 2015.
- ^ Position and Movements, H.M. Ships, War Vessels and Aircraft, British and Foreign, Parts I. and II., August 1914. London: Admiralty Records. 1914.
- ^ Stern, pp. 29–30.
- ^ Stern, p. 30.
- ^ Stern, p. 38.
References
- Hutchinson, Robert (2001). Jane's submarines : war beneath the waves from 1776 to the present day. London: HarperCollins. ISBN 978-0007105588.
- Preston, Antony (2001). The Royal Navy submarine service : a centennial history. London: Conway Maritime. ISBN 978-0851778914..
- Stern, Robert Cecil (2007). The Hunter Hunted: Submarine Versus Submarine: Encounters from World War I to the Present. Annapolis, Maryland: Naval Institute Press. ISBN 978-1-59114-379-6.
External links
- 'Submarine losses 1904 to present day' - Royal Navy Submarine Museum Archived 25 September 2015 at the Wayback Machine