Submarine of the Royal Navy
 HMS H4, another submarine of the same class
|
| History |
|---|
 United Kingdom |
|---|
| Name | HMS H7 |
| Builder | Canadian Vickers, Montreal |
| Laid down | 19 May 1915 |
| Commissioned | June 1915 |
| Fate | Sold, 1921 |
| General characteristics |
|---|
| Class and type | H-class submarine |
| Displacement |
- 364 long tons (370 t) surfaced
- 434 long tons (441 t) submerged
|
| Length | 150 ft 3 in (45.80 m) |
| Beam | 15 ft 4 in (4.67 m) |
| Propulsion | |
| Speed |
- 13 knots (24 km/h; 15 mph) surfaced
- 10 knots (19 km/h; 12 mph) submerged
|
| Range |
- 1,600 nmi (3,000 km) at 10 kn (19 km/h; 12 mph) surfaced
- 130 nmi (240 km) at 2 kn (3.7 km/h; 2.3 mph) submerged
|
| Complement | 22 |
| Armament | |
HMS H7 was a British H-class submarine built by the Canadian Vickers Co, Montreal, Quebec, Canada. She was laid down on 19 May 1915 and was commissioned in June 1915. HMS H7 was sold in 1921. It had a complement of twenty-two crew members, a length of 171 feet (52 m), and a surfaced range of 1,600 nautical miles (3,000 km; 1,800 mi) at 10 knots (19 km/h; 12 mph).
Design
Like all pre-H11 British H-class submarines, H7 had a displacement of 364 long tons (370 t) at the surface and 434 long tons (441 t) while submerged.[1] It had a total length of 150 feet 3 inches (45.8 m), a beam of 15 feet 4 inches (4.67 m), and a draught of 12 feet (3.7 m).[2] It contained a diesel engines providing a total power of 480 horsepower (360 kW) and two electric motors each providing 320 horsepower (240 kW) power.[2] The use of its electric motors made the submarine travel at 11 knots (20 km/h; 13 mph). It would normally carry 16.4 long tons (16.7 t) of fuel and had a maximum capacity of 18 long tons (18 t).[3]
The submarine had a maximum surface speed of 13 knots (24 km/h; 15 mph) and a submerged speed of 11 knots (20 km/h; 13 mph). British H-class submarines had ranges of 1,600 nautical miles (3,000 km; 1,800 mi) at speeds of 10 knots (19 km/h; 12 mph).[1] H7 was fitted with a 6 pounds (2.7 kg) Hotchkiss quick-firing gun (6-pounder) and four 18 inches (460 mm) torpedo tubes. Its torpedo tubes were fitted to the bows and the submarine was loaded with eight 18 inches (460 mm) torpedoes.[1] It is a Holland 602 type submarine but was designed to meet Royal Navy specifications. Its complement was twenty-two crew members.[1]
