HMS H2 was a British H-class submarine built by Canadian Vickers, 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, Newfoundland to Gibraltar escorted by the armed merchant cruiser . She was accompanied by , and . H2 was sold in Malta on 7 March 1921. Design Like all pre-H11 British H-class submarines, H2 had a displacement of at the surface and while submerged. It had a total length of , a beam of , and a draught of . It contained a diesel engines providing a total power of and two electric motors each providing power. The use of its electric motors made the submarine travel at . It would normally carry of fuel and had a maximum capacity of . The submarine had a maximum surface speed of and a submerged speed of . British H-class submarines had ranges of . H2 was fitted with a Hotchkiss quick-firing gun (6-pounder) and four torpedo tubes. Its torpedo tubes were fitted to the bows and the submarine was loaded with eight torpedoes. It is a Holland 602 type submarine but was designed to meet Royal Navy specifications. Its complement was twenty-two crew members. References British H-class submarines Ships built in Quebec 1915 ships World War I submarines of the United Kingdom Royal Navy ship names