Crew list of Ships hit by U-boats
Pieter Marinus But
Merchant Navy. Dutch
| Born | 27 Feb 1905 | Vlissingen | |
| Died | 17 Mar 1943 | (38) |
Roster information listed for Pieter Marinus But
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
 | Terkoelei | Steam merchant | Second Officer | 17 Mar 1943 (+) | U-631 (1) |