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Convoys SL 139/MKS 30 were two Allied convoys which ran during the Battle of the Atlantic in World War II. SL 139 was part of the OS/SL series, between Britain and the South Atlantic, and MKS 30 one of the KMS/MKS series 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. ==Background== Following the renewal of the U-boat offensive in the Atlantic, convoys on the UK/Gibraltar routes, had again come under attack. German U-boat Control (BdU) had established a patrol line off the coast of Portugal, which had already attacked Allied convoys in October, leading to an inconclusive clash over Convoy SL 138/MKS 28. In order to maximize the protection for convoys on this route the Admiralty and begun to run these in tandem, bringing together the South Atlantic and the Mediterranean routes at Gibraltar. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Convoy SL 139/MKS 30」の詳細全文を読む スポンサード リンク
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