HMS K7

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Career
Name: HMS K7
Builder: HM Dockyard Devonport
Laid down: 8 November 1915
Commissioned: July 1917
Fate: Sold, 9 September 1921
General characteristics
Class & type: K-class submarine
Displacement: 1,980 long tons (2,010 t) surfaced
2,566 long tons (2,607 t) submerged
Length: 339 ft (103 m)
Beam: 26 ft 6 in (8.08 m)
Draught: 20 ft 11 in (6.38 m)
Propulsion: 2 × 10,500 shp (7.8 MW) Brown-Curtis or Parsons geared steam turbines
2 × Yarrow boilers
4 × 1,440 hp (1,070 kW) electric motors
1 × 800 hp (600 kW) Vickers diesel generator for charging batteries on the surface
2 × 3-blade 7 ft 6 in (2.29 m) diameter screws
Speed: 24 knots (44 km/h; 28 mph) surfaced
8 knots (15 km/h; 9.2 mph) submerged
Range: Surfaced :
800 nmi (1,500 km; 920 mi) at 24 kn (44 km/h; 28 mph)
12,500 nmi (23,200 km; 14,400 mi) at 10 kn (19 km/h; 12 mph)
Submerged :
8 nmi (15 km; 9.2 mi) at 8 kn (15 km/h; 9.2 mph)
40 nmi (46 mi; 74 km) at 4 kn (4.6 mph; 7.4 km/h)
Complement: 59 (6 officers and 53 ratings)
Armament: • 8 × 18 in (460 mm) torpedo tubes, (4 beam, 4 bow)
• 8 × spare torpedoes
• 2 × 18 in torpedo tubes fitted on deck (later removed)
• 2 × BL 4 in (100 mm) Mk.XI guns
• 1 × 3 in (76 mm) gun

HMS K7 was a K class submarine built by HM Dockyard, Devonport. She was laid down on 8 November 1915 and commissioned in July 1917.

K7 was involved in the accident with the 4th Light Cruiser Squadron. She was also involved in the Battle of May Island exercise. K7 was damaged in the exercise by running over the sinking K4.

K7 was sold on 9 September 1921 at Sunderland.

References

  • Hutchinson, Robert. Submarines, War Beneath The Waves, from 1776 to the Present Day. 


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