# HMS H2

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**HMS *H2*** was a [British H-class](/source/British_H-class_submarine) [submarine](/source/Submarine) built by [Canadian Vickers](/source/Canadian_Vickers), [Montreal](/source/Montreal). She was laid down on 11 January 1915 and was commissioned on 4 June 1915. After commissioning, *H2* crossed the Atlantic from [St. John's](/source/St_John's,_Newfoundland_and_Labrador), [Newfoundland](/source/Newfoundland_and_Labrador) to [Gibraltar](/source/Gibraltar) escorted by the [armed merchant cruiser](/source/Armed_merchant_cruiser) [HMS *Calgarian*](/source/HMS_Calgarian_(1913)). She was accompanied by [HMS *H1*](/source/HMS_H1), [HMS *H3*](/source/HMS_H3) and [HMS *H4*](/source/HMS_H4). *H2* was sold in Malta on 7 March 1921.

## Design

She had a displacement of 364 long tons (370 t) at the surface and 434 long tons (441 t) while submerged. Her total length was 150 feet 3 inches (45.8 m), with a beam of 15 feet 4 inches (4.7 m) and a draught of 12 feet (3.7 m).

Her two diesel engines provided a total power of 480 horsepower (360 kW) and her two electric motors provided 320 horsepower (240 kW) power which gave the submarine a maximum surface speed of 13 knots (24 km/h; 15 mph) and a submerged speed of 11 knots (20 km/h; 13 mph). She would normally carry 16.4 long tons (16.7 t) of fuel and had a maximum capacity of 18 long tons (18 t)[2] and a range of 1,600 nautical miles (2,963 km; 1,841 mi). The boat was armed with a 6 pdr [Hotchkiss](/source/QF_6-pounder_Hotchkiss) [quick-firing gun](/source/Quick-firing_gun) and four 18-inch (457-millimetre) bow [torpedo tubes](/source/Torpedo_tube) with six 18-inch (457-millimetre) torpedoes carried. The [complement](/source/Ship's_company) was twenty-two crew members.

## Citations

1. [Britain 6-pdr / 8cwt \[2.244"/40 (57 mm)\] QF Marks I and II](http://www.navweaps.com/Weapons/WNBR_6pounder_m1.htm)

1. J. D. Perkins (1999). ["Building History and Technical Details for Canadian CC-Boats and the Original H-CLASS"](http://www.gwpda.org/naval/hpatsubs.htm). Electric Boat Company Holland Patent Submarines. Retrieved 20 August 2015.

## References

- Gardiner, Robert (1985). *Conway's All the World's Fighting Ships 1906–1921*. Conway Maritime Press. ISBN 0-85177-245-5.
- Hutchinson, Robert (2001). *Jane's submarines : war beneath the waves from 1776 to the present day*. London: HarperCollins. ISBN 9780007105588.

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Adapted from the Wikipedia article [HMS H2](https://en.wikipedia.org/wiki/HMS_H2) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/HMS_H2?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.