Nummer: 21508
| Area : | Baltic Sea |
| Sea area : | Gulf of Finland |
| Date of minelaying : | 11.07.1941 |
| Nationality of U-boat : | Finnish |
| U-boat : | IKU-TURSO |
| Commander : | Pekkanen |
| Grid : | F13 barrage |
| presumed target type : | --- |
| presumed tonnage : | ---- --- |
| presumed result : | hit not ascertained |
| Used weapon(s) : | Sea mine(s) |
| Date of sinking : | 28.08.1941 |
| Time of sinking : | 18:05 |
| Nationality of target : | Soviet |
| Actual type of target : | Fleet Tug |
| Name of target : | Ella (No.530) |
| Year of launch : | 1904 |
| Actual tonnage : | 1521 BRT |
| Actual result : | sunk |
| Position of target : | near Mochni I. |
| Footnote : | On mine barrage F.13 (laid out by "Iku-Turso" on Jul.,11th) were probably sunk: patroler No.530 "Ella", destroyer "Jakov Sverdlov", and patroler No.584 "Naissar", alltogether near Mochni Island. |