Nummer: 09905
| Area : | Western Area |
| Sea area : | US East Coast |
| Date of attack : | 27.05.1942 |
| Time of attack : | 00:18 |
| Nationality of U-boat : | German |
| U-boat : | U 578 |
| Commander : | Rehwinkel |
| Grid : | CB 5731 |
| presumed target type : | Motor Freighter id |
| presumed tonnage : | 6300 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 26.05.1942 |
| Time of observation : | 22:15 |
| Nationality of target : | Dutch |
| Actual type of target : | Motor Freighter |
| Name of target : | Polyphemus |
| Year of launch : | 1930 |
| Actual tonnage : | 6269 BRT |
| Actual result : | sunk |
| Position of target : | 38.12n 63.22w |
