Nummer: 21608
| Area : | Baltic Sea |
| Sea area : | Gulf of Finland |
| Date of attack : | 30.07.1944 |
| Time of attack : | 17:40 |
| Nationality of U-boat : | German |
| U-boat : | U 481 |
| Commander : | Andersen |
| Grid : | AO 3666 |
| presumed target type : | Motor Mine Sweeper |
| presumed result : | damaged |
| Number of torpedoes/mines : | 1 |
| Used weapon(s) : | Acoustic homing torpedo (gnat) |
| Date of observation : | 30.07.1944 |
| Time of observation : | 18:41 |
| Nationality of target : | Soviet |
| Actual type of target : | Motor Mine Sweeper |
| Name of target : | KT-807/No.42 |
| Year of launch : | 1936 |
| Actual tonnage : | 26 ts |
| Actual result : | sunk |
| Position of target : | Narva Bay |
| Footnote : | U-481 observed one gnat torpedo hit after 0:35 min and observed a small minesweeping boat sinking. - The second gnat detonation was heard after 1:55 min. The target was not observed sinking, but another minesweeping boat was observed being towed away. |
| updated on: | 00.00.0000 |
| Remark: | Anm. |