Nummer: 16923a
| Area : | Western Area |
| Sea area : | West African Coast |
| Date of attack : | 16.07.1943 |
| Time of attack : | 08:01 |
| Nationality of U-boat : | German |
| U-boat : | U 306 |
| Commander : | Trotha |
| Grid : | EK 4985 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 7000 BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 2- |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | SL.133 |
| Footnote : | U-306 shadowed convoy SL.133 from EK 76 up to EK 49, and reported four ships of 27.000 gross tons sunk, and one other ship probably sunk. |
| related attacks : | Angriff 1 Angriff 2 |
| Convoy : | SL.133 |
| Route of convoy : | Sierra Leone (Freetown) - United Kingdom (Liverpool) |
| Remark to convoy : | Since Sep 1939; from May 1943 combined with MKS in Atlantic, counter traffic = OS. |