Crew list of Ships hit by U-boats
Karl Oswald Martinsen
Merchant Navy. Norwegian
Roster information listed for Karl Oswald Martinsen
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
 | Navarra | Steam merchant | Passenger (Chief Engineer Officer) | 6 Apr 1940 | U-59 |
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
| Navarra | Steam merchant | Passenger (Chief Engineer Officer) | 6 Apr 1940 | U-59 |