SM UC-33
SM "UC-33" was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy () during World War I. The U-boat was ordered on 29 August 1915 and was launched on 26 August 1916. She was commissioned into the German Imperial Navy on 25 September 1916 as SM "UC-33". In seven patrols "UC-33" was credited with sinking 36 ships, either by torpedo or by mines laid. "UC-33" was shelled and then rammed by patrol boat "PC61" captained by Frank Worsley at position in St. George's Channel on 26 September 1917. Design. A German  Type UC II submarine, "UC-33" had a displacement of when at the surface and while submerged. She had a length overall of , a beam of , and a draught of . The submarine was powered by two six-cylinder four-stroke diesel engines each producing (a total of ), two electric motors producing , and two propeller shafts. She had a dive time of 48 seconds and was capable of operating at a depth of . The submarine had a maximum surface speed of and a submerged speed of . When submerged, she could operate for at ; when surfaced, she could travel at . "UC-33" was fitted  with six mine tubes, eighteen UC 200 mines, three torpedo tubes (one on the stern and two on the bow), seven torpedoes, and one Uk L/30 deck gun. Her complement was twenty-six crew members.