Crew list of Ships hit by U-boats
Pieter Machiel Konkelaar
Royal Dutch Navy. Dutch
| Born | 20 May 1908 | Velsen | |
| Died | 13 Nov 1942 | (34) |
Roster information listed for Pieter Machiel Konkelaar
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
 | HNMS Isaac Sweers (G 83) | Destroyer | Stoker 1e klasse | 13 Nov 1942 (+) | U-431 |