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HMS H22
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<h2 id="design">Design</h2> <p>Like all post-<i>H20</i> <a href="/facts/British_H-class_submarine/NEnd4S8a">British H-class submarines</a>, <i>H22</i> had a displacement of 423 long tons (430 t) at the surface and 510 long tons (520 t) while submerged.<a class="footnote-ref" id="fnref:1" href="#fn:1"><sup>1</sup></a> It had a total length of 171 feet (52 m),<a class="footnote-ref" id="fnref:2" href="#fn:2"><sup>2</sup></a> a beam of 15 feet 4 inches (4.67 m), and a draught of 12 metres (39 ft).<a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a> 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.<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a> 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).<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a> </p><p>The submarine had a maximum surface speed of 13 knots (24 km/h; 15 mph) and a submerged speed of 10.5 knots (19.4 km/h; 12.1 mph). Post-<i>H20</i> British H-class submarines had ranges of 2,985 nautical miles (5,528 km; 3,435 mi) at speeds of 7.5 knots (13.9 km/h; 8.6 mph) when surfaced.<a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a><a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a> <i>H22</i> was fitted with an <a href="/facts/Anti-aircraft_warfare/fHtGQpLy">anti-aircraft gun</a> and four 21 inches (530 mm) <a href="/facts/Torpedo_tube/D0o8sNR1">torpedo tubes</a>. Its torpedo tubes were fitted to the <a href="/facts/Bow_(ship)/7IMvUGon">bows</a> and the submarine was loaded with eight 21 inches (530 mm) torpedoes.<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a> It is a <a href="/facts/Holland_602_type_submarine/PaQRtS2z">Holland 602 type submarine</a> but was designed to meet Royal Navy specifications. Its <a href="/facts/Ship%2527s_company/0WkqapPV">complement</a> was twenty-two crew members.<a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a> </p> <h2 id="bibliography">Bibliography</h2> <ul><li>Hutchinson, Robert (2001). <i>Jane's submarines : war beneath the waves from 1776 to the present day</i>. London: HarperCollins. <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 9780007105588.</li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Gardiner, Robert; Gray, Robert (1985). Conway's All the World's Fighting Ships 1906-1921. London: Conway Maritime Press. p. 92. ISBN 0-85177-245-5. <a href="0-85177-245-5" target="_blank">0-85177-245-5</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Derek Walters (2004). The History of the British 'U' Class Submarine. Casemate Publishers. pp. 2–. ISBN 978-1-84415-131-8. <a href="978-1-84415-131-8" target="_blank">978-1-84415-131-8</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8. Retrieved from Naval-History on 20 August 2015. <a href="978-1-86176-281-8" target="_blank">978-1-86176-281-8</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8. Retrieved from Naval-History on 20 August 2015. <a href="978-1-86176-281-8" target="_blank">978-1-86176-281-8</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>J. D. Perkins (1999). "Building History and Technical Details for Canadian CC-Boats and the Original H-CLASS". Electric Boat Company Holland Patent Submarines. Retrieved 20 August 2015. <a href="http://www.gwpda.org/naval/hpatsubs.htm" target="_blank">http://www.gwpda.org/naval/hpatsubs.htm</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>Gardiner, Robert; Gray, Robert (1985). Conway's All the World's Fighting Ships 1906-1921. London: Conway Maritime Press. p. 92. ISBN 0-85177-245-5. <a href="0-85177-245-5" target="_blank">0-85177-245-5</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8. Retrieved from Naval-History on 20 August 2015. <a href="978-1-86176-281-8" target="_blank">978-1-86176-281-8</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>Gardiner, Robert; Gray, Robert (1985). Conway's All the World's Fighting Ships 1906-1921. London: Conway Maritime Press. p. 92. ISBN 0-85177-245-5. <a href="0-85177-245-5" target="_blank">0-85177-245-5</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> <li id="fn:9"><p>Gardiner, Robert; Gray, Robert (1985). Conway's All the World's Fighting Ships 1906-1921. London: Conway Maritime Press. p. 92. ISBN 0-85177-245-5. <a href="0-85177-245-5" target="_blank">0-85177-245-5</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></p></li> </ol>