Ships hit by U-138
See the profile page for U-138
| Date | U-boat | Commander | Name of ship | Tons | Nat. | Convoy | ||
| 20 Sep, 1940 | U-138 | Wolfgang Lüth | Boka | 5.560 |  | pa | OB-216 | |
| 20 Sep, 1940 | U-138 | Wolfgang Lüth | City of Simla | 10.138 |  | br | OB-216 | |
| 20 Sep, 1940 | U-138 | Wolfgang Lüth |  | New Sevilla | 13.801 | | br | OB-216 |
| 21 Sep, 1940 | U-138 | Wolfgang Lüth | Empire Adventure | 5.145 | | br | OB-216 | |
| 15 Oct, 1940 | U-138 | Wolfgang Lüth | | Bonheur | 5.327 | | br | OB-228 |
| 15 Oct, 1940 | U-138 | Wolfgang Lüth | British Glory (d.) | 6.993 | | br | OB-228 | |
| 20 May, 1941 | U-138 | Franz Gramitzky | | Javanese Prince | 8.593 | | br | |
| 55.557 | ||||||||
| 6 ships sunk (48.564 tons) and 1 ship damaged (6.993 tons).
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