Convoy SL 139/MKS 30

Convoy SL 139/MKS 30
Part of World War II
Date 18–21 November 1943 Location North Atlantic Result Allied victory
Belligerents
United Kingdom  Canada	Germany
Commanders and leaders
Cdre. JS Dalison	Adm. Karl Dönitz
Strength
66 ships 19 escorts	29 U-boats
Casualties and losses
1 ship sunk 1 ship damaged 1 escort damaged	3 U-boats sunk

Convoys SL 139/MKS 30 were two Allied convoys which ran during the Battle of the Atlantic in World War II. SL 139 was one of the SL convoys from the South Atlantic to Britain, and MKS 30 one of the MKS convoys between Britain and the Mediterranean. They were sailing together on the Gibraltar homeward route, having made a rendezvous off Gibraltar in November 1943. They were the subject of a major U-boat attack, as part of the Kriegsmarine's renewed Autumn offensive.