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

U-564 refueled U-107 in the western Atlantic on 16 February, 1942 after the two boats collided in poor visibility. U-107 had damaged fuel tanks & her outer torpedo doors were jammed shut but there were no casualties and no reprimands. U-564 sailed from her French base (she was assigned to the 1st U-Boot-Flotille at Brest) on 18 January 1942 and operated off the area of Newfoundland, then the US east coast. She gave fuel to U-107 as indicated, then returned to France on 6 March, 1942.

U-203 refueled from UA on 23 March, 1942 east of Newfoundland. She had sailed from her French base (she was part of the 1st U-Boot-Flotille at Brest) on 12 March 1942 and was off the Newfoundland area where she took on the fuel from UA, searched for an unidentified convoy in late March, 1942 then went to the Cape Hatteras area. U-203 left station there on 15 April, 1942 and arrived at her home port on 30 April, 1942.

UA refueled U-203 as shown above, and also refueled U-84 in late March, 1942 when UA was used as an auxiliary tanker from March, 1942 until mid April, 1942 east of Newfoundland. UA sailed from her French base on 14 March, 1942 and returned to Germany on 24 April, 1942.

U-84 refueled again from UA on 3 April, 1942 east of Newfoundland. U-84 sailed from her French base (the 1st U-Boot-Flotille at Brest) on 17 March, 1942 and arrived on station 1 April, 1942. After taking on fuel, she patrolled off the US east coast down to Cape Hatteras, then 300 to 400 miles to the easy and left station on 27 April, 1942, returning to France on 14 May, 1942.

U-459, the first specifically-built U-Tanker, sailed from her German base on 21 March, 1942. She took up her refueling station 500 miles NE of Bermuda in GRID CC, arriving on station 3 April and remaining there until 9 May, returning to France on 15 May, 1942. During this patrol, she refueled 15 FrontBoots which are now listed.

U-571 refueled from U-459 on 22 April, 1942 for her return trip from the US coast. U-571 departed her French base (the 3rd U-Boot-Flotille based at La Rochelle) on 10 March, 1942 for her patrol area off Newfoundland and was on station 23 March, then she went down the US east coast to a position 300 miles off Cape Hatteras, then refueled and returned to France, leaving station 27 April, 1942 and arriving France on 7 May, 1942.

U-572 refueled from U-459 on 24 April, 1942. U-572 departed her French base (she was assigned to the 3rd U-Boot-Flotille at La Rochelle) on 14 March, 1942 and arrived on station 27 March, 1942 off Newfoundland then down the US east coast to position 300 miles east of Cape Hatteras. She refueled as shown for the return voyage to France on 13 May, 1942.

U-502 refueled from U-459 on 25 April, 1942. U-502 departed her French base (2nd U-Boot-Flotille at Lorient) on 19 March, 1942, intending to be the escort for the blockade runner RIO GRANDE. She was on station 1 April, then went northwest of Bermuda for the remainder of her patrol and refueled as shown. She departed for home base over 6/7 May, 1942 and arrived back home on 24 May, 1942.

U-108 refueled from U-459 on 22 April, 1942. She had departed her French base 30 March, 1942 and arrived on station 22 April when she took on fuel from U-459. U-108 patrolled the Greater Antilles and off the Bahama Islands, leaving station 20 May for her return to France where she arrived 1 June, 1942.

U-352 refueled from U-459 over 26/27 April, 1942. She had departed her French base (the 3rd U-Boot-Flotille at La Rochelle) on 7 April and operated off the American east coast SE of Cape Hatteras until she was sunk on 9 May, 1942. Skipper of U-352 was KK HELMUT RATHKE (49-+-1984).

U-98 refueled from U-459 over 26/27 April, 1942. She had departed her French base (the 7th U-Boot-Flotille at St. Nazaire) on 31 March and took up station off the American east coast SE of Cape Hatteras and later on down to the Florida coast. She left station on 15 May for her return to France, where she arrived on 6 June, 1942.

U-564 refueled from U-459 over 26/27 April, 1942. She had departed her French Base (the 1st U-Boot-Flotille at Brest) on 4 April and took up station off the American east coast off Cape Hatteras and later moved down to the Florida coast. She left station on 20 May and arrived back at base 5 June, 1942.

U-333 under command of PETER 'ALI' CREMER (114-+-1985) refueled from U-459 on 29 April, 1942. She had departed her French base on 30 March and took up station off the American east coast to the east and then the southeast of Cape Hatteras and later moved to the east coast of Florida, then back to the east coast of the USA. She left station on 13 May and arrived her home base on 26 May, 1942.

U-751 refueled from U-459 on 30 April, 1942 after departing her French base (the 7th U-Boot-Flotille at St. Nazaire) on 15 April. She was on station off the American east coast to the east and to the southeast of Cape Hatteras, then she moved south to the Bahama Islands, to the Mona Passage, and finally to the eastern Caribbean. She left station 29 May and returned to home base 15 June, 1942.

U-558 refueled from U-459 on 30 April, 1942. She departed her French base (the 1st U-Boot-Flotille at Brest) on 12 April, and arrived on station on 29 April off the American east coast to the east and later the southeast of Cape Hatteras. She later shifted to the area of the Greater Antilles and the Windward Passage.

U-459, in the meantime, had returned to port and replenished all her stores and was back on station, and U-558 took on fuel again from U-459 on 28 May for her return to France. U-558 arriver at her home base on 21 June, 1942.

U-594 refueled from U-459 on 30 April, 1942. She departed her French base (the 7th U-Boot-Flotille at St. Nazaire) on 11 April and took up station to the north of the Bahama Islands on 29 April. She moved on to the northern Caribbean between Cuba and the Yucatan Peninsula.

After U-459 had returned with fresh supplies, U-594 refueled a second time from her on 3 June for her return voyage and she arrived at her home base on 25 June, 1942.

When one realizes just how many FrontBoots could remain on station with the support of just one TYPE XIV MILK COW, it is easy to understand why these U-Tankers were THE priority target. The era of the MILK COW boats was short indeed - only 10 were built and their life expectancy was one or two patrols at best. The OKM realized this was an unworkable tactic and cancelled building of any further U-Tankers.