Neha Patil

HMS K7

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Name  HMS K7
Commissioned  July 1917
Class and type  K-class submarine
Construction started  8 November 1915
Builder  HMNB Devonport
Laid down  8 November 1915
Fate  Sold, 9 September 1921
Length  103 m
Draft  6.38 m
Displacement  1,980 long tons (2,010 t) surfaced 2,566 long tons (2,607 t) submerged

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.

Design

K7 displaced 1,800 long tons (1,800 t) when at the surface and 2,600 long tons (2,600 t) while submerged. It had a total length of 338 feet (103 m), a beam of 26 feet 6 inches (8.08 m), and a draught of 20 ft 11 in (6.38 m). The submarine was powered by two oil-fired Yarrow Shipbuilders boilers supplying one geared Brown-Curtis or Parsons steam turbine; this developed 10,500 ship horsepower (7,800 kW) to drive two 7 ft 6 in (2.29 m) screws. Submerged power came from four electric motors each producing 350 to 360 horsepower (260 to 270 kW). It was also had an 800 hp (600 kW) diesel engine to be used when steam was being raised, or instead of raising steam.

The submarine had a maximum surface speed of 24 kn (44 km/h) and a submerged speed of 9 to 9.5 kn (16.7 to 17.6 km/h). It could operate at depths of 150 ft (46 m) at 2 kn (3.7 km/h) for 80 nmi (150 km). K7 was armed with ten 18-inch (460 mm) torpedo tubes, two 4-inch (100 mm) deck guns, and a 3-inch (76 mm) anti-aircraft gun. Its torpedo tubes were fitted to the bows, the midship section, and two were mounted on the deck. Its complement was fifty-nine crew members.

References

HMS K7 Wikipedia


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