Nummer: 05719
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 27.06.1941 |
| Time of attack : | 00:56 |
| Nationality of U-boat : | German |
| U-boat : | U 79 |
| Commander : | Kaufmann |
| Grid : | AK 2434 |
| presumed target type : | Tanker |
| presumed tonnage : | 10000 BRT |
| presumed result : | damaged |
| Number of torpedoes/mines : | 1 |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | HX.133 |
| Date of observation : | 26.06.1941 |
| Time of observation : | 22:58 |
| Nationality of target : | Dutch |
| Actual type of target : | Motor Tanker |
| Name of target : | Tibia |
| Year of launch : | 1939 |
| Actual tonnage : | 10356 BRT |
| Actual result : | sunk |
| Position of target : | 59.55n 30.49w |
| Convoy : | HX.133 |
| 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. |