| Country | Ship | Weight | U-Boat | Commander | Date | Convoy | |
| Ag |
|
Radames | 3,575 | U-103 | Viktor Schütze | 25-May-41 | |
| Total - Ag | 3,575 | ||||||
| Am |
|
Robin Moor | 4,999 | U-69 | Jost Metzler | 21-May-41 | |
| Total - Am | 4,999 | ||||||
| Be |
|
Gand | 5,086 | U-556 | Herbert Wohlfarth | 10-May-41 | OB-318 |
| Total - Be | 5,086 | ||||||
| Br |
|
Nerissa | 5,583 | U-552 | Erich Topp | 1-May-41 | HX-121 |
| Br |
|
Smø | 1,494 | U-103 | Viktor Schütze | 1-May-41 | |
| Br |
|
Capulet | 8,190 | U-201 | Adalbert Schnee | 2-May-41 | HX-121 |
| Br |
|
Wray Castle | 4,253 | U-103 | Viktor Schütze | 3-May-41 | |
| Br |
|
Queen Maud | 4,976 | U-38 | Heinrich Liebe | 5-May-41 | OB-309 |
| Br |
|
Dunkwa | 4,752 | U-103 | Viktor Schütze | 6-May-41 | OB-310 |
| Br |
|
Camito | 6,833 | U-97 | Udo Heilmann | 6-May-41 | |
| Br |
|
Oakdene | 4,255 | U-105 | Georg Schewe | 6-May-41 | OG-59 |
| Br |
|
Surat | 5,529 | U-103 | Viktor Schütze | 6-May-41 | |
| Br |
|
Ixion | 10,263 | U-94 | Herbert Kuppisch | 7-May-41 | OB-318 |
| Br |
|
Ramillies | 4,553 | U-97 | Udo Heilmann | 8-May-41 | OB-317 |
| Br |
|
Bengore Head | 2,609 | U-110 | Fritz-Julius Lemp | 9-May-41 | OB-318 |
| Br |
|
City of Winchester | 7,120 | U-103 | Viktor Schütze | 9-May-41 | OB-313 |
| Br |
|
Empire Cloud(d) | 5,969 | U-201 | Adalbert Schnee | 9-May-41 | OB-318 |
| Br |
|
Esmond | 4,976 | U-110 | Fritz-Julius Lemp | 9-May-41 | OB-318 |
| Br |
|
Gregalia | 5,802 | U-201 | Adalbert Schnee | 9-May-41 | OB-318 |
| Br |
|
Aelybryn(d) | 4,986 | U-556 | Herbert Wohlfarth | 10-May-41 | OB-318 |
| Br |
|
Empire Caribou | 4,861 | U-556 | Herbert Wohlfarth | 10-May-41 | OB-318 |
| Br |
|
City of Shanghai | 5,828 | U-103 | Viktor Schütze | 11-May-41 | OB-313 |
| Br |
|
Benvrackie | 6,434 | U-105 | Georg Schewe | 13-May-41 | OB-312 |
| Br |
|
Salopian | 10,549 | U-98 | Robert Gysae | 13-May-41 | SC-30 |
| Br |
|
Somersby | 5,170 | U-111 | Wilhelm Kleinschmidt | 13-May-41 | SC-30 |
| Br |
|
Benvenue | 5,920 | U-105 | Georg Schewe | 15-May-41 | OB-314 |
| Br |
|
Rodney Star | 11,803 | U-105 | Georg Schewe | 16-May-41 | |
| Br |
|
Piako | 8,286 | U-107 | Günter Hesser | 18-May-41 | |
| Br |
|
Empire Ridge | 2,922 | U-96 | Heinrich Lehmann-Willenborck | 19-May-41 | HG-61 |
| Br |
|
British Security | 8,470 | U-556 | Herbert Wohlfarth | 20-May-41 | HX-126 |
| Br |
|
Cockaponset | 5,995 | U-556 | Herbert Wohlfarth | 20-May-41 | HX-126 |
| Br |
|
Darlington Court | 4,974 | U-556 | Herbert Wohlfarth | 20-May-41 | HX-126 |
| Br |
|
Harpagus | 5,173 | U-109 | Hans-Georg Fischer | 20-May-41 | HX-126 |
| Br |
|
Javanese Prince | 8,593 | U-138 | Franz Gramitzky | 20-May-41 | |
| Br |
|
Norman Monarch | 4,718 | U-94 | Herbert Kuppisch | 20-May-41 | HX-126 |
| Br |
|
Rothermere | 5,356 | U-98 | Robert Gysae | 20-May-41 | HX-126 |
| Br |
|
San Felix(d) | 13,037 | U-111 | Wilhelm Kleinschmidt | 20-May-41 | OB-322 |
| Br |
|
Marconi | 7,402 | U-98 | Rogert Gysae | 21-May-41 | OB-322 |
| Br |
|
Tewkesbury | 6,501 | U-69 | Jost Metzler | 21-May-41 | |
| Br |
|
Barnby | 4,813 | U-111 | Wilhelm Kleinschmidt | 22-May-41 | HX-126 |
| Br |
|
British Grenadier | 6,857 | U-103 | Viktor Schütze | 22-May-41 | |
| Br |
|
Vulcain | 4,362 | U-38 | Heinrich Liebe | 24-May-41 | OB-317 |
| Br |
|
Colonial | 5,108 | U-107 | Günter Hesser | 27-May-41 | OB-318 |
| Br |
|
Papalemos | 3,748 | U-107 | Günter Hesser | 28-May-41 | |
| Br |
|
Empire Storm | 7,290 | U-557 | Ottokar Arnold Paulssen | 29-May-41 | HX-128 |
| Br |
|
Tabaristan | 6,251 | U-38 | Heinrich Liebe | 29-May-41 | |
| Br |
|
Empire Protector | 6,181 | U-38 | Heinrich Liebe | 30-May-41 | |
| Br |
|
Silveryew | 6,373 | U-106 | Jürgen Oesten | 30-May-41 | |
| Br |
|
Clan Macdougall | 6,843 | U-106 | Jürgen Oesten | 31-May-41 | |
| Br |
|
Gravelines | 2,491 | U-147 | Eberhard Wetjen | 31-May-41 | HX-127 |
| Br |
|
Sangara | 5,445 | U-69 | Jost Metzler | 31-May-41 | |
| Total - Br | 289,897 | ||||||
| Fa |
|
Emanuel | 166 | U-556 | Herbert Wohlfarth | 6-May-41 | |
| Total - Fa | 166 | ||||||
| Fr |
|
Notre Dame du Châtelet | 488 | U-43 | Wofgang Lüth | 15-May-41 | |
| Total - Fr | 488 | ||||||
| Gr |
|
Marionga | 4,236 | U-103 | Viktor Schütze | 24-May-41 | OB-317 |
| Total - Gr | 4,236 | ||||||
| Is |
|
Holmsteinn | 16 | U-204 | Walter Kell | 31-May-41 | |
| Total - Is | 16 | ||||||
| It |
|
Sangro | 6,466 | U-97 | Udo Heilmann | 6-May-41 | |
| Total - It | 6,466 | ||||||
| Nl |
|
Marisa | 8,029 | U-107 | Günter Hesser | 17-May-41 | |
| Nl |
|
Elusa | 6,235 | U-93 | Claus Korth | 21-May-41 | HX-126 |
| Nl |
|
Berhala | 6,622 | U-38 | Heinrich Liebe | 23-May-41 | OB-318 |
| Nl |
|
Wangi Wangi | 7,789 | U-103 | Viktor Schütze | 25-May-41 | |
| Total - Nl | 28,675 | ||||||
| Nw |
|
Taranger | 4,873 | U-95 | Gerd Schreiber | 3-May-41 | |
| Nw |
|
Eastern Star | 5,658 | U-94 | Herbert Kuppisch | 7-May-41 | OB-318 |
| Nw |
|
John P. Pedersen | 6,128 | U-94 | Herbert Kuppisch | 20-May-41 | HX-126 |
| Nw |
|
Rinda | 6,029 | U-38 | Heinrich Liebe | 31-May-41 | |
| Total - Nw | 22,688 | ||||||
| Sw |
|
Japan | 5,230 | U-38 | Heinrich Liebe | 4-May-41 | OB-310 |
| Total - Sw | 5,230 | ||||||
| Total Damaged | 23,992 | ||||||
| Total Sunk | 347,530 |