Nummer: 21804
| Area : | Black Sea |
| Sea area : | Crimean Coast |
| Date of attack : | 18.06.1942 |
| Time of attack : | 05:02 |
| Nationality of U-boat : | Italian |
| U-boat : | CB.2 |
| Commander : | Russo |
| Grid : | CL 5546 |
| presumed target type : | Submarine |
| presumed tonnage : | 587 ts |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 18.06.1942 |
| Time of observation : | 06:06 |
| Nationality of target : | Soviet |
| Actual type of target : | Submarine |
| Name of target : | A-4 |
| Year of launch : | 1923 |
| Actual tonnage : | 390 ts |
| Actual result : | target visibly missed |
| Position of target : | 44.17n 33.13e |
| Footnote : | The Soviet submarine A-4, en route from Sevastopol to Novorossisk, recognized the attack at 6:06h (Moskow time). It heard a detonation under water, but could not see any more. |
| updated on: | 12.11.2002 |
| Remark: | A-4, Anm. |
| Changes: | 1) Kolbicz, 12.11.2002: A-4 |