Nummer: 25808
| Area : | Indic Ocean |
| Sea area : | Southeast Asia |
| Date of attack : | 07.01.1942 |
| Time of attack : | 18:00 |
| Nationality of U-boat : | Japanese |
| U-boat : | I-157 |
| Commander : | Nakashima |
| presumed target type : | Steam Freighter |
| presumed result : | sunk |
| Used weapon(s) : | Gunfire |
| Date of observation : | 07.01.1942 |
| Nationality of target : | Dutch |
| Actual type of target : | Steam Tanker |
| Name of target : | Djirak |
| Year of launch : | 1928 |
| Actual tonnage : | 3077 BRT |
| Actual result : | sunk |
| Position of target : | 07.15s 116.23e |