SM U-110 was a Type U 93 U-boat of the German Imperial Navy (de|Kaiserliche Marine) during World War I.She was ordered on 5 May 1916 and launched on 28 July 1917. She was commissioned on 25 September 1917 as SM U-110.[1] and assigned to IV Flotilla of the High Seas Fleet, based on the German North Sea coast.[2]
U-110 made three wartime patrols, and sank 10 ships, totalling . Her first success was the British Q ship, with which she fought an engagement on 24 December 1917. Penshurst sank shortly after.
U 110 was sunk on 15 March 1918 north-west of Malin Head at 55.0667°N -14°W. She was found and depth-charged by British destroyers Michael and Moresby. 39 men were lost.[3]
In September 1918, she was raised and taken to Swan Hunter's dry dock for restoration. At the conclusion of hostilities, restoration was halted and she was sold for scrap.
| Date | Name | Nationality | Tonnage[4] | Fate[5] | |
|---|---|---|---|---|---|
| 24 December 1917 | 1,191 | Sunk | |||
| 30 December 1917 | Zone |  United Kingdom | 3,914 | Sunk | |
| 7 January 1918 | Egda |  Norway | 2,527 | Sunk | |
| 4 March 1918 | Castle Eden | United Kingdom | 1,949 | Sunk | |
| 7 March 1918 | RFA Vitol | 2,639 | Sunk | ||
| 7 March 1918 | Tarbetnesse | United Kingdom | 3,018 | Sunk | |
| 8 March 1918 | Erica | United Kingdom | 167 | Sunk | |
| 9 March 1918 | Nanny Wignall | United Kingdom | 93 | Sunk | |
| 10 March 1918 | Germaine |  France | 1,428 | Sunk | |
| 15 March 1918 | Amazon | United Kingdom | 10,037 | Sunk |