HMS D7

History
United Kingdom
NameHMS D7
BuilderChatham Dockyard
Laid down14 February 1910
Launched14 January 1911
Commissioned14 December 1911
FateSold 19 December 1921 to H. Pounds
General characteristics
Class & typeD-class submarine
DisplacementSurfaced= 483 tons / Submerged= 595 tons
Length163.0 ft (49.7 m) (oa)
Beam13.6 ft (4.1 m) (oa)
Propulsion550 hp (410 kW) electric 1,750 hp (1,300 kW) diesel twin screws
Speed
  • Surfaced=*14.0 knots (25.9 km/h; 16.1 mph)
  • Submerged= 10.0 knots (18.5 km/h; 11.5 mph) (design) 9.0 knots (16.7 km/h; 10.4 mph) (service)
Range
  • Surface=*2,500 nautical miles (4,600 km; 2,900 mi) at 10 knots (19 km/h; 12 mph)
  • Submerged=45 nautical miles (83 km; 52 mi) at 5 knots (9.3 km/h; 5.8 mph)
Complement25
Armament3 x 18-inch (46 cm) torpedo tubes (2 forward, one aft)

HMS D7 was one of eight D-class submarines built for the Royal Navy during the first decade of the 20th century.

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