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- Projekt ASS: U-Boot-Erfolge der Achsenmächte 1939-1945
- Übersicht > ID 277
| Area : | Western Area |
| Sea area : | North Sea |
| Date of attack : | 14.02.1940 |
| Time of attack : | 01:35 |
| Nationality of U-boat : | German |
| U-boat : | U 57 |
| Commander : | Korth |
| Grid : | AN 1671 |
| presumed target type : | Tanker id |
| presumed tonnage : | 10191 BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 2 |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | HX.18 s |
| Date of observation : | 14.02.1940 |
| Time of observation : | 01:00 |
| Nationality of target : | British |
| Actual type of target : | Steam Tanker |
| Name of target : | Gretafield |
| Year of launch : | 1928 |
| Actual tonnage : | 10191 BRT |
| Actual result : | not repaired, total loss |
| Position of target : | 58.27n 02.33w |
| Convoy : | HX.18 s |
| Route of convoy : | (New York) - Halifax - United Kingdom |
| Remark to convoy : | Sep 1939 to Sep 1942 ab Halifax, then from New York (counter traffic = ON), vgl. HXF und SC. |
| updated on: | 00.00.0000 |
| Remark: | 10191$ |
