Crew list of Ships hit by U-boats
John Richard Hannigan
USNR (6421817). American
| Died | 10 Jun 1943 |
Roster information listed for John Richard Hannigan
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
 | Esso Gettysburg | Turbine tanker | Seaman First Class | 10 Jun 1943 (+) | U-66 |