HMS D5

HMS D5, 7 January 1915
History
United Kingdom
Name:	HMS D5
Builder:	Vickers Armstrong, Barrow-in-Furness
Laid down:	23 February 1910
Launched:	28 August 1911
Commissioned:	19 February 1911
Fate:	Sunk, 3 November 1914
General characteristics
Class and type:	D-class submarine
Displacement:	483 long tons (491 t) (surfaced) 595 long tons (605 t) (submerged)
Length:	163 ft (50 m) (o/a)
Beam:	13.6 ft (4.1 m) (o/a)
Installed power:	1,750 hp (1,300 kW) (diesel engines) 550 hp (410 kW) (electric motors)
Propulsion:	2 × diesel engines 2 × electric motors 2 × screws
Speed:	Surfaced: 14 kn (16 mph; 26 km/h) Submerged: 10 kn (12 mph; 19 km/h) (design); 9 kn (10 mph; 17 km/h) (service)
Range:	2,500 nmi (2,900 mi; 4,600 km) at 10 kn (12 mph; 19 km/h) 45 nmi (52 mi; 83 km) at 5 kn (5.8 mph; 9.3 km/h)
Complement:	25
Armament:	3 × 18 inch (450 mm) torpedo tubes (2 forward, one aft)

HMS D5 was one of eight D-class submarines built for the Royal Navy during the first decade of the 20th century.

The D-class submarines were designed as improved and enlarged versions of the preceding C class, with diesel engines replacing the dangerous petrol engines used earlier. D3 and subsequent boats were slightly larger than the earlier boats. They had a length of 164 feet 7 inches (50.2 m) overall, a beam of 20 feet 5 inches (6.2 m) and a mean draught of 11 feet 5 inches (3.5 m). They displaced 495 long tons (503 t) on the surface and 620 long tons (630 t) submerged. The D-class submarines had a crew of 25 officers and other ranks and were the first to adopt saddle tanks.

For surface running, the boats were powered by two 600-brake-horsepower (447 kW) diesels, each driving one propeller shaft. When submerged each propeller was driven by a 275-horsepower (205 kW) electric motor. They could reach 14 knots (26 km/h; 16 mph) on the surface and 9 knots (17 km/h; 10 mph) underwater. On the surface, the D class had a range of 2,500 nautical miles (4,600 km; 2,900 mi) at 10 knots (19 km/h; 12 mph).

The boats were armed with three 21-inch (53.3 cm) torpedo tubes, two in the bow and one in the stern. They carried one reload for each tube, a total of six torpedoes.

D5 was one of six D-class submarines ordered from Vickers Armstrong under the 1909–1910 Naval Estimates and was laid down at Vickers' Barrow-in-Furness shipyard on 23 February 1910. She was launched on 28 August 1911 and completed on 19 January 1912.