Nummer: 00105
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 06.09.1939 |
| Time of attack : | 14:40 |
| Nationality of U-boat : | German |
| U-boat : | U 47 |
| Commander : | Prien |
| Grid : | BE 6689 |
| presumed target type : | Steam Freighter id |
| presumed tonnage : | 4086 BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 1 |
| Used weapon(s) : | Torpedo(es) + Gunfire |
| Date of observation : | 06.09.1939 |
| Time of observation : | 14:25 |
| Nationality of target : | British |
| Actual type of target : | Steam Freighter |
| Name of target : | Rio Claro |
| Year of launch : | 1922 |
| Actual tonnage : | 4086 BRT |
| Actual result : | sunk |
| Position of target : | 46.30n 12.00w |
