Crew list of Ships hit by U-boats
John Olaf Olsen
Merchant Navy. Norwegian
| Born | 18 Nov 1905 | ||
| Died | 24 Jan 1942 | (36) |
Roster information listed for John Olaf Olsen
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
 | Ringstad | Motor merchant | Chief Officer | 24 Jan 1942 (+) | U-333 |