Convoy route SL
| Code | SL |
| Route | Sierra Leone (Freetown) - UK |
| Area | North Atlantic, Central Atlantic |
| Notes | Convoys from Freetown to the UK, sometimes with ships joining from Gibraltar in a convoy with suffix G, later in the war usually combined off Gibraltar with MKS convoys coming from the Mediterranean. Sometimes sailed in two parts with faster or slower ships in a convoy with the same number and the prefix F (fast) or slow (S) |
| Convoys | Date | Losses | |
1939 | |||
| SL-7A | Nov 1939 | 1 ship sunk with a total of 4,915 tons. | |
| SL-8B | Nov 1939 | 1 ship sunk with a total of 5,144 tons. | |
1940 | |||
| SL-34 | Jun 1940 | 2 ships sunk with a total of 9,264 tons. | |
| SL-36 | Jun 1940 | 3 ships sunk with a total of 23,813 tons. | |
| SL-38 | Jul 1940 | 1 ship sunk with a total of 4,581 tons. | |
| SL-40 | Aug 1940 | 1 ship sunk with a total of 4,360 tons. | |
| SL-41 | Aug 1940 | 1 ship sunk with a total of 4,966 tons. | |
| SL-43 | Aug 1940 | 1 ship sunk with a total of 15,007 tons. | |
| SL-53 | Nov 1940 | 1 ship sunk with a total of 4,791 tons. | |
1941 | |||
| SL-64 | Feb 1941 | 1 ship sunk with a total of 5,237 tons. | |
| SL-67 | Mar 1941 | 5 ships sunk with a total of 29,388 tons. | |
| SL-68 | Mar 1941 | 7 ships sunk with a total of 38,006 tons. | |
| SL-76 | Jun 1941 | 2 ships sunk with a total of 4,004 tons. | |
| SL-78 | Jun 1941 | 8 ships sunk with a total of 40,401 tons. | |
| SL-81 | Aug 1941 | 5 ships sunk with a total of 23,190 tons. | |
| SL-87 | Sep 1941 | 7 ships sunk with a total of 33,290 tons. | |
| SL-89 | Oct 1941 | 2 ships sunk with a total of 9,380 tons. | |
1942 | |||
| SL-98 | Jan 1942 | 1 ship sunk with a total of 1,546 tons. | |
| SL-109 | May 1942 | 1 ship sunk with a total of 3,491 tons. | |
| SL-111 | Jun 1942 | 1 ship sunk with a total of 6,914 tons. | |
| SL-118 | Aug 1942 | 4 ships sunk with a total of 27,899 tons. | |
| SL-119 | Aug 1942 | 3 ships sunk with a total of 20,026 tons. | |
| SL-125 | Oct 1942 | 12 ships sunk with a total of 80,005 tons. | |
1943 | |||
| SL-126 | Mar 1943 | 4 ships sunk with a total of 28,833 tons. | |
| SL-128 | May 1943 | 1 ship sunk with a total of 3,803 tons. | |
| SL-138 | Oct 1943 | 1 ship sunk with a total of 2,968 tons. | |
1944 | |||
| SL-150 | Mar 1944 | 1 ship sunk with a total of 1,015 tons. | |
27 SL convoys successfully attacked in the war.
78 ships were sunk with a total of 436,237 GRT.
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