Crew list of Ships hit by U-boats
Johannes Cornelis van der Est
Merchant Navy. Dutch
| Born | 6 Mar 1922 | Terneuzen | |
| Died | 6 Apr 1943 | (21) |
Roster information listed for Johannes Cornelis van der Est
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
 | Tapanoeli | Steam merchant | Boy | 17 Mar 1941 | U-106 |
| Blitar | Steam merchant | Able Seaman | 6 Apr 1943 (+) | U-632 (1) |