Nummer: 01621
| Area : | Western Area |
| Sea area : | North Sea |
| Date of attack : | 25.03.1940 |
| Time of attack : | 20:11 |
| Nationality of U-boat : | German |
| U-boat : | U 57 |
| Commander : | Korth |
| Grid : | AN 1642 |
| presumed target type : | Tanker id |
| presumed tonnage : | 5742 BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 1 |
| Used weapon(s) : | Torpedo coup de grâce |
| Date of observation : | 25.03.1940 |
| Nationality of target : | British |
| Actual type of target : | Steam Tanker |
| Name of target : | Daghestan |
| Year of launch : | 1921 |
| Actual tonnage : | 5742 BRT |
| Actual result : | sunk |
| Position of target : | 9sm E Copinsay (Orkney) |
| Footnote : | "Daghestan" was damaged by a bomb hit from a German aircraft on March 20th, 1940. |
| updated on: | 00.00.0000 |
| Remark: | -DT |