Crew list of Ships hit by U-boats
Charles Patrick O'Brien
USNR (8355094). American
Roster information listed for Charles Patrick O'Brien
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
 | USS Block Island (CVE 21) | Escort carrier | Seaman First Class | 29 May 1944 | U-549 |