SM UB-22

SM UB-22 was a German Type UB II submarine or U-boat in the German Imperial Navy (Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 9 October 1915. She was commissioned into the German Imperial Navy on 2 March 1915 as SM UB-22. The submarine sank 29 ships in 18 patrols for a total of .. UB-22 was mined and sunk in the North Sea at 54.66667°N, 6.53333°W on 19 January 1918.