Nummer: 04718
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 31.03.1941 |
| Time of attack : | 10:33 |
| Nationality of U-boat : | German |
| U-boat : | U 46 |
| Commander : | Endraß |
| Grid : | AK 2836 |
| presumed target type : | Tanker id |
| presumed tonnage : | 8714 BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 1 |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 31.03.1941 |
| Nationality of target : | Swedish |
| Actual type of target : | Motor Tanker |
| Name of target : | Castor |
| Year of launch : | 1928 |
| Actual tonnage : | 8714 BRT |
| Actual result : | sunk |
| Position of target : | 57.59n 32.08w |
