Nummer: 02508
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 15.08.1940 |
| Nationality of U-boat : | German |
| U-boat : | U 51 |
| Commander : | Knorr |
| Grid : | AM 29-- |
| presumed target type : | Tanker id |
| presumed tonnage : | 5709 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | HX.62 s |
| Date of observation : | 15.08.1940 |
| Nationality of target : | British |
| Actual type of target : | Motor Tanker |
| Name of target : | Sylvafield |
| Year of launch : | 1925 |
| Actual tonnage : | 5709 BRT |
| Actual result : | sunk |
| Position of target : | 56.39n 11.16w |
| Convoy : | HX.62 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. |