Crew list of Ships hit by U-boats
Jakob de Groot
Merchant Navy. Dutch
| Born | 22 Nov 1915 | Den Haag | |
| Died | 26 Feb 1942 | (26) |
Roster information listed for Jakob de Groot
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
 | Mamura | Motor tanker | Second Officer | 26 Feb 1942 (+) | U-504 (1) |