Nummer: 22403
| Area : | Mediterranean |
| Sea area : | Greece / Egean Sea |
| Date of attack : | 15.08.1940 |
| Time of attack : | 08:30 |
| Nationality of U-boat : | Italian |
| U-boat : | DELFINO |
| Commander : | Aicardi |
| Grid : | off Tinos Is. |
| presumed target type : | Coastal Steam Freighter |
| presumed tonnage : | BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 3 |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 15.08.1940 |
| Nationality of target : | Greek |
| Actual type of target : | Light Cruiser |
| Name of target : | Helli |
| Year of launch : | 1912 |
| Actual tonnage : | 2116 ts |
| Actual result : | sunk |
| Position of target : | Tinos Harbour |
| Footnote : | "Delfino" claimed an attack on 2 small merchants at the kay. The sinking of the destroyer was not officially verified, but it was established by historical research. |
| updated on: | 02.07.2018 |
| Remark: | ANM |
| Changes: | 1) KGvM 12.02.2014: Tinos = Insel der Cykladen 2) ANM 02.07.2018: Angriff eines UB unbekannter Nationalität. |