SM U-22 was one of 329 submarines serving in the Imperial German Navy in World War I. U-22 was engaged in commerce war as part of the naval warfare, during the First Battle of the Atlantic.
U-22 had a career of 14 patrols, sinking 43 ships for a total of 46,521 tons. In addition, she damaged three ships totalling 8,988 tons, and captured 1 prize worth 1,170 tons.
Oblt.z.S. Hashagen was the most successful, sinking 28 of the vessels, the largest being the British passenger steamer California at 5,629 tons. She was sunk NWxN3/4N of Cape Villano on 17 October 1917.[1]
U-22 was surrendered to the Allies at Harwich on 1 December 1918 in accordance with the requirements of the Armistice with Germany. She was sold (with one of her engines) by the British Admiralty to Hughes Bolckow on 3 March 1919 for £2,975, and was broken up at Blyth between 25 April 1919 and 1922.[2]
| Date | Name | Nationality | Tonnage [3] | Fate[4] | |
|---|---|---|---|---|---|
| 21 January 1915 | Sunk by accident (friendly fire) | ||||
| 21 April 1915 | Ruth |  | 867 | Sunk | |
| 22 April 1915 | St. Lawrence |  United Kingdom | 196 | Sunk | |
| 15 June 1915 | Strathnairn | United Kingdom | 4,336 | Sunk | |
| 16 June 1915 | Trafford | United Kingdom | 215 | Sunk | |
| 16 June 1915 | Turnwell | United Kingdom | 4,264 | Damaged | |
| 20 June 1915 | Premier | United Kingdom | 169 | Sunk | |
| 8 August 1915 | 7,911 | Sunk | |||
| 12 August 1915 | Grodno | United Kingdom | 1,955 | Sunk | |
| 6 April 1916 | Vennacher | United Kingdom | 4,700 | Damaged | |
| 8 April 1916 | Adamton | United Kingdom | 2,304 | Sunk | |
| 13 April 1916 | Chic | United Kingdom | 3,037 | Sunk | |
| 21 June 1916 | Francoise D’amboise |  | 1,973 | Sunk | |
| 2 November 1916 | Vanadis | 384 | Sunk | ||
| 2 November 1916 | Runhild | | 1,170 | Captured as prize | |
| 3 November 1916 | Ägir | | 427 | Sunk | |
| 3 November 1916 | Frans | | 134 | Sunk | |
| 3 November 1916 | Jönköping | | 82 | Sunk | |
| 8 November 1916 | Taimi | 114 | Sunk | ||
| 11 November 1916 | Astrid | | 191 | Sunk | |
| 7 August 1917 | Jarl | | 1,643 | Sunk | |
| 11 October 1917 | Elve | United Kingdom | 899 | Sunk | |
| 16 October 1917 | Jennie E. Righter |  | 647 | Sunk | |
| 17 October 1917 | California | United Kingdom | 5,629 | Sunk | |
| 19 October 1917 | Australdale |  Australia | 4,379 | Sunk | |
| 19 October 1917 | Staro |  | 1,805 | Sunk | |
| 20 October 1917 | Snetinden | | 2,859 | Sunk | |
| 6 January 1918 | Saint Mathieu | 175 | Sunk | ||
| 2 March 1918 | Stina | | 1,136 | Sunk | |
| 11 May 1918 | Michail | 150 | Sunk | ||
| 12 May 1918 | Kong Raud | | 60 | Sunk | |
| 12 May 1918 | Tennes | | 58 | Sunk | |
| 12 May 1918 | Vea | | 40 | Sunk | |
| 14 May 1918 | Stairs | | 54 | Sunk | |
| 16 May 1918 | Polarstrommen | | 54 | Sunk | |
| 16 May 1918 | Fedor Tschishoff | 832 | Sunk | ||
| 16 May 1918 | Unidentified fishing vessel | 80 | Sunk | ||
| 19 May 1918 | Forsok | | 31 | Sunk | |
| 20 May 1918 | Hertha | 253 | Sunk | ||
| 19 August 1918 | Buoni Amici | 265 | Sunk | ||
| 20 August 1918 | Magalhaes Lima |  | 196 | Sunk | |
| 22 August 1918 | Maria Luiza | | 148 | Sunk | |
| 31 August 1918 | Norte | | 254 | Sunk | |
| 1 September 1918 | Libertador | | 185 | Sunk | |
| 4 September 1918 | Santa Maria | | 48 | Sunk | |
| 4 September 1918 | Villa Franca | | 46 | Sunk | |
| 4 September 1918 | Lloyd | | 300 | Sunk | |
| 4 September 1918 | Prateado | | 24 | Damaged |