Nummer: 10319b
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 15.06.1942 |
| Time of attack : | 04:33 |
| Nationality of U-boat : | German |
| U-boat : | U 552 |
| Commander : | Topp |
| Grid : | BE 8589 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 4000 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | HG.84 |
| Date of observation : | 15.06.1942 |
| Nationality of target : | British |
| Actual type of target : | Steam Freighter |
| Name of target : | Thurso |
| Year of launch : | 1919 |
| Actual tonnage : | 2436 BRT |
| Actual result : | sunk |
| Position of target : | 43.41n 18.02w |
| related attacks : | Angriff 1 Angriff 2 |
| Convoy : | HG.84 |
| Route of convoy : | Gibraltar - United Kingdom (home) |
| Remark to convoy : | Sep 1939 to Sep 1942, then MKF und MKS |