Crew list of Ships hit by U-boats
Hjalmer J. Christofferson
Merchant Marine. American
| Died | 12 May 1942 |
Roster information listed for Hjalmer J. Christofferson
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
 | Virginia | Turbine tanker | Second Mate | 12 May 1942 (+) | U-507 |