Nummer: 27121
| Area : | Indic Ocean |
| Sea area : | Indian Seaway |
| Date of attack : | 24.10.1943 |
| Nationality of U-boat : | Japanese |
| U-boat : | I-10 |
| Commander : | Tonozuka |
| Grid : | LN 1220 |
| presumed target type : | Steam Freighter |
| presumed result : | sunk |
| Used weapon(s) : | Gunfire |
| Date of observation : | 24.10.1943 |
| Time of observation : | 15:05 |
| Nationality of target : | British |
| Actual type of target : | Motor Freighter |
| Name of target : | Congella |
| Year of launch : | 1914 |
| Actual tonnage : | 4533 BRT |
| Actual result : | sunk |
| Position of target : | 01.02n 71.14e |
| Footnote : | Naval square LN 1220 was claimed by the German Naval Intelligence Service. |
| updated on: | 30.12.2003 |
| Remark: | 15:05 GMT |