Crew list of Ships hit by U-boats
John Frank Sperka
Merchant Marine. American
| Born | 1921 | ||
| Died | 14 Nov 1942 | (21) |
Roster information listed for John Frank Sperka
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
 | Scapa Flow | Steam merchant | Coal Passer | 14 Nov 1942 (+) | U-134 |