Nummer: 25907
| Area : | Indic Ocean |
| Date of attack : | 28.01.1942 |
| Time of attack : | 19:50 |
| Nationality of U-boat : | Japanese |
| U-boat : | I-164 |
| Commander : | Ogawa |
| Grid : | 10.30n 80.19e |
| presumed target type : | Steam Freighter id |
| presumed tonnage : | 1500 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Gunfire |
| Date of observation : | 28.01.1942 |
| Nationality of target : | British |
| Actual type of target : | Steam Freighter |
| Name of target : | Idar |
| Year of launch : | .. |
| Actual tonnage : | 391 BRT |
| Actual result : | damaged |
| Position of target : | 10.12n 80.13e |
| updated on: | 00.03.2013 |
| Remark: | POS1 |