Nummer: 05507a
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 06.06.1941 |
| Time of attack : | 04:22 |
| Nationality of U-boat : | Italian |
| U-boat : | MARCONI |
| Commander : | Pollina |
| Grid : | 35.32n 11.05w |
| presumed target type : | Tanker |
| presumed tonnage : | 5742 BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 2- |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | OG.63 |
| Name of target : | Tankschiff |
| Actual result : | sunk |
| Footnote : | Attack on oiler type "Daghestan" (5742 BRT). - The "Ariosto" in pos.41 observed torpedoes passing by at the time of "Veniero's" attack. During this operation only "Baron Lovat" and "Taberg" were lost most probably by the attack of "Marconi". |
| related attacks : | Angriff 1 Angriff 2 Angriff 3 |
| Convoy : | OG.63 |
| Route of convoy : | United Kingdom - Gibraltar (out) |
| Remark to convoy : | Sep 1939 to Jul 1940 via South Ireland, Jul 1940 to Aug 1943 via North Channel; later KMS. |