Nummer: 21522
| Area : | Baltic Sea |
| Sea area : | Gulf of Finland |
| Date of attack : | 15.07.1944 |
| Time of attack : | 00:12 |
| Nationality of U-boat : | German |
| U-boat : | U 679 |
| Commander : | Breckwoldt |
| Grid : | AO 3555 |
| presumed target type : | MTB |
| presumed result : | damaged |
| Used weapon(s) : | Gunfire |
| Date of observation : | 14.07.1944 |
| Nationality of target : | Soviet |
| Actual type of target : | MTB |
| Name of target : | TK-57 |
| Year of launch : | 1943 |
| Actual tonnage : | 36 ts |
| Actual result : | damaged |
| Position of target : | Viborg Bay |
| Footnote : | Between Dec.1942 and Jun.1944 there have been no further U-boat operations in the Baltic Sea. - Early in July 1944 the finnish U-boats Vesihiisi and Vetehinen laid 3 mine barrages. There are no successes reported. |
| updated on: | 25.08.1998 |
| Remark: | Anm. Minensperren |
| Changes: | 1) Cloots, 09/1997: Angriff 15/0012 mit 2 Treffern statt 14/0016. 2) Woher kommt Erfolg TK-57 ? 3) Weis, 25.08.08: Überarbeitung Anmerkung 8 (Minensprerren) |