Thanks to CHUCK MYLES (1068-1989) for this huge task of compiling all this data. Every time a U-Boat took on fuel in any foreign port, on the high seas from another U-Boat or a surface ship - any way at all that a U-Boat took on fuel, CHUCK put it on this list. Here we learn:

U-43 took on fuel from U-461 about 29 July, 1942. She sailed from her homeport of Lorient (the 2nd U-Bootflotille) on 4 July, 1942 and joined Group WOLF in the North Atlantic an chased an unidentified convoy with no success. Then she attacked Convoy ON.113 and later took on fuel as indicated, then joined Group STEINBRINK and attacked shipping in Convoy ON.115. During this attack, U-43 sustained damage and had to withdraw back to her homeport where she arrived on 15 August, 1942.

U-86 took on fuel from U-461 around 29 July, 1942. She departed her homeport at Brest (the 1st U-Bootflotille) on 2 July, 1942 and joined Group WOLF in the North Atlantic. She also pursued an unidentified convoy with no success, then took on fuel as shown. She then headed for her patrol area off the American east coast. She went past Newfoundland and Nova Scotia and took up position some 400 miles off the US east coast. She then returned to her homeport and arrived on 18 September, 1942.

U-502 took on fuel from U-116 around 23 July, 1942. She departed her homeport of Lorient (the 2nd U-Bootflotille) on 27 June, 1942 and joined Group HAI heading for the area of Freetown, Sierre Leone on the coast of West Africa. She attacked Convoy OS.33, then she swung south and patrolled between 20 and 25 degrees, as far as Dakar, refueled as indicated, then continued patrol between Africa and Brazil. She left station around 2 August and returned home on 12 August, 1942.

U-130 refueled from U-116 about 28 July, 1942. She sailed from her home port of Lorient (the 2nd U-Bootflotille) on 4 July, 1942 and arrived on station in the Central Atlantic around 20 July where she patrolled between the Cape Verde Islands and the coast of Brazil and she took on fuel as indicated. Then she moved to the west of Freetown, later to the Congo River estuary, returned to Freetown and returned to homeport, arriving 12 September, 1942.

More U-Boat Refueling

U-Boat Refueling: (#114)
U-Boat Refueling: (#112)