Crew list of Ships hit by U-boats
Clifford O'Brien
Merchant Navy. British
Roster information listed for Clifford O'Brien
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
 | Leticia | Steam tanker | Pumpman | 27 Jun 1940 | U-47 |
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
| Leticia | Steam tanker | Pumpman | 27 Jun 1940 | U-47 |