SM UC-19 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy (de|Kaiserliche Marine) during World War I. The U-boat was ordered on 29 August 1915 and was launched on 15 March 1916. She was commissioned into the German Imperial Navy on 21 August 1916 as SM UC-19.[1] In three patrols UC-19 was credited with sinking four ships, either by torpedo or by mines laid. UC-19 was sunk by depth charges from in the English Channel on 6 December 1916.
Like all pre-UC-25 Type UC II submarines, UC-19 had a displacement of 417t when at the surface and 493t while submerged. She had a total length of 49.35m (161.91feet), a beam of 5.22m (17.13feet), and a draught of 3.650NaN0. The submarine was powered by two six-cylinder four-stroke diesel engines each producing 250PS (a total of 500PS), two electric motors producing 460PS, and two propeller shafts. She had a dive time of 35 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-19 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 8.8sp=usNaNsp=us Uk L/30 deck gun. Her complement was twenty-six crew members.
| Date | Name | Nationality | Tonnage[2] | Fate[3] | |
|---|---|---|---|---|---|
| 24 November 1916 | HMT Dhoon | 275 | Sunk | ||
| 1 December 1916 | Rene Montrieux |  France | 234 | Sunk | |
| 9 January 1917 | Fernebo |  Sweden | 1,440 | Sunk | |
| 11 January 1917 | Ole Bull |  Norway | 1,835 | Sunk |