Nummer: 21507
| Area : | Baltic Sea |
| Sea area : | Gulf of Finland |
| Date of minelaying : | 11.08.1941 |
| Nationality of U-boat : | Finnish |
| U-boat : | VESIHIISI |
| Commander : | Kijanen |
| Grid : | -- ---- |
| presumed target type : | --- |
| presumed tonnage : | ---- --- |
| presumed result : | hit not ascertained |
| Used weapon(s) : | Sea mine(s) |
| Date of sinking : | 27.08.1941 |
| Nationality of target : | Soviet |
| Actual type of target : | Submarine |
| Name of target : | Shch-301 |
| Year of launch : | 1932 |
| Actual tonnage : | 586 ts |
| Actual result : | sunk |
| Position of target : | near Rvuskari (?) |
| Footnote : | According to Soviet sources the submarine Shch-301 was lost on Aug.27th, 1941 by unknown reason in this area. |