Nummer: 26906
| Area : | Indic Ocean |
| Date of attack : | 27.06.1943 |
| Nationality of U-boat : | German |
| U-boat : | U 511 |
| Commander : | Schneewind |
| Grid : | KR 4869 |
| presumed target type : | Steam Freighter id |
| presumed tonnage : | 7000 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 27.06.1943 |
| Nationality of target : | American |
| Actual type of target : | Steam Freighter |
| Name of target : | Sebastiano Cermeno |
| Year of launch : | 1943 |
| Actual tonnage : | 7194 BRT |
| Actual result : | sunk |
| Position of target : | 29n 50.10e |
| updated on: | 00.04.2002 |
| Remark: | Sebastian- |