Crew list of Ships hit by U-boats
Thomas Gerrit Hendrik Ruhaak
Merchant Navy. Dutch
| Born | 31 Mar 1914 | Rotterdam |
Roster information listed for Thomas Gerrit Hendrik Ruhaak
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
 | Tapanoeli | Steam merchant | Third Officer | 17 Mar 1941 | U-106 |
| Dempo | Troop transport | Third Officer | 17 Mar 1944 | U-371 |