HMS H1

History
United Kingdom
Name	H1
Builder	Canadian Vickers, Montreal
Laid down	11 January 1915
Launched	1 April 1915
Commissioned	26 May 1915
Fate	Sold, 7 March 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)
Installed power	2 × 240 hp (179 kW) diesel engines 2 × 310 hp (231 kW) electric motors
Propulsion	2 × propeller shafts
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	4 × 18 in (457 mm) bow torpedo tubes 8 × 18 inch torpedoes 1 × QF 6 pounder gun[1]

HMS H1 was a H-class submarine built by Canadian Vickers Co., Montreal for the British Royal Navy. She was laid down on 11 January 1915 and was commissioned on 26 May 1915. H1 crossed the Atlantic from St. John's, Newfoundland to Gibraltar escorted by the armed merchant cruiser HMS Calgarian. She was accompanied by H2, H3 and H4. H1 mistakenly sank the H5 off Cattaro on 15 April 1918. H1 was sold on 7 March 1921 in Malta.