Nummer: 01705
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 10.04.1940 |
| Time of attack : | 03:52 |
| Nationality of U-boat : | German |
| U-boat : | U 37 |
| Commander : | Hartmann |
| Grid : | AE 9273 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 4000 BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 3 |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 10.04.1940 |
| Nationality of target : | Norwegian |
| Actual type of target : | Motor Freighter |
| Name of target : | Tosca |
| Year of launch : | 1920 |
| Actual tonnage : | 5128 BRT |
| Actual result : | sunk |
| Position of target : | 62.52n 07.34w |
