Nummer: 27117
| Area : | Indic Ocean |
| Sea area : | Arabian Gulf |
| Date of attack : | 05.10.1943 |
| Time of attack : | 23:30 |
| Nationality of U-boat : | German |
| U-boat : | U 188 |
| Commander : | Lüdden |
| Grid : | MF 2642 |
| presumed target type : | Tanker id |
| presumed tonnage : | 9977 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 05.10.1943 |
| Time of observation : | 22:30 |
| Nationality of target : | Norwegian |
| Actual type of target : | Motor Tanker |
| Name of target : | Britannia |
| Year of launch : | 1938 |
| Actual tonnage : | 9977 BRT |
| Actual result : | damaged |
| Position of target : | 24.21n 58.02e |