# SM U-61

SM U-61 was a German Type U 57 U-boat commissioned and deployed to operate off the coast of the British Isles and attack coastal shipping as part of the U-boat Campaign during World War I.
In a 15-month career spanning nine war patrols, U-61 plagued allied shipping in the Atlantic Ocean during the German war on Allied trade (Handelskrieg). She sank 33 Allied ships, totalling 84,564 gross register tons (GRT). She also damaged six merchant ships of 21,054 GRT, two auxiliary warships of 3,424 GRT and one warship of 1,020 tons (the US Navy destroyer USS Cassin before fleeing the fight). She went missing some time after March 23, 1918.

## Previously recorded fate

U-61 was originally thought to have been sunk in a depth charge attack by PC51 on 26 March 1918. This attack was actually against UC-56, which was able to continue on patrol despite the attack.

## Summary of raiding history

| Date | Name | Nationality | Tonnage | Fate |
| 2 March 1917 | Edvard Grieg | Norway | 989 | Sunk |
| 3 March 1917 | Rosborg | Denmark | 1,877 | Sunk |
| 9 March 1917 | Spartan | Norway | 2,287 | Sunk |
| 10 March 1917 | Angola | Portugal | 4,297 | Sunk |
| 13 March 1917 | Luciline | United Kingdom | 3,765 | Damaged |
| 13 March 1917 | Northwaite | United Kingdom | 3,626 | Sunk |
| 13 March 1917 | HMS Warner | Royal Navy | 1,273 | Sunk |
| 17 April 1917 | Aburi | United Kingdom | 3,730 | Sunk |
| 18 April 1917 | Castilian | United Kingdom | 1,923 | Sunk |
| 21 April 1917 | Skjold | Norway | 1,592 | Sunk |
| 21 April 1917 | Telena | United Kingdom | 4,778 | Sunk |
| 23 April 1917 | Calluna | Denmark | 1,405 | Sunk |
| 23 April 1917 | Lena | United Kingdom | 2,463 | Sunk |
| 24 April 1917 | Metropolis | Norway | 1,811 | Sunk |
| 24 April 1917 | Thirlby | United Kingdom | 2,009 | Damaged |
| 30 April 1917 | Jarstein | Norway | 198 | Sunk |
| 9 June 1917 | Ada | Sweden | 2,370 | Sunk |
| 9 June 1917 | Dana | Denmark | 1,590 | Sunk |
| 10 June 1917 | Betty | Russia | 2,683 | Sunk |
| 10 June 1917 | Ribera | United Kingdom | 3,511 | Sunk |
| 14 June 1917 | Widwud | Russia | 299 | Damaged |
| 16 June 1917 | Fallodon | United Kingdom | 3,012 | Damaged |
| 17 June 1917 | Raloo | United Kingdom | 1,012 | Sunk |
| 19 June 1917 | Batoum | United Kingdom | 4,054 | Sunk |
| 20 June 1917 | Nitonian | United Kingdom | 6,381 | Damaged |
| 28 July 1917 | Comanchee | United Kingdom | 5,588 | Damaged |
| 2 August 1917 | Libia | France | 2,416 | Sunk |
| 4 August 1917 | Countess Of Mar | United Kingdom | 2,234 | Sunk |
| 5 August 1917 | Sauternes | France | 902 | Sunk |
| 5 August 1917 | Campo Libre | Spain | 50 | Sunk |
| 6 August 1917 | Campana | United States | 3,675 | Sunk |
| 6 August 1917 | Jeanne Et Genevieve | French Navy | 695 | Damaged |
| 7 August 1917 | Trento | Italy | 3,276 | Sunk |
| 29 September 1917 | Elmsgarth | United Kingdom | 3,503 | Sunk |
| 11 October 1917 | Rhodesia | United Kingdom | 4,313 | Sunk |
| 16 October 1917 | USS Cassin | United States Navy | 1,020 | Damaged |
| 27 December 1917 | USS Santee | United States Navy | 2,729 | Damaged |
| 3 January 1918 | Birchwood | United Kingdom | 2,756 | Sunk |
| 5 January 1918 | Rose Marie | United Kingdom | 2,220 | Sunk |
| 6 January 1918 | Halberdier | United Kingdom | 1,049 | Sunk |
| 6 January 1918 | Spenser | United Kingdom | 4,186 | Sunk |
| 23 March 1918 | Etonian | United Kingdom | 6,515 | Sunk |