Crew list of Ships hit by U-boats
Geert de Boer
Merchant Navy. Dutch
| Born | 5 Dec 1915 | Rotterdam | |
| Died | 19 Mar 1941 | (25) |
Roster information listed for Geert de Boer
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
 | Mandalika | Steam merchant | Fourth Engineer Officer | 19 Mar 1941 (+) | U-105 (1) |