Nummer: 26904
| Area : | Indic Ocean |
| Date of attack : | 19.06.1943 |
| Time of attack : | 13:50 |
| Nationality of U-boat : | Japanese |
| U-boat : | I-37 |
| Commander : | Otani |
| presumed target type : | Steam Freighter |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 19.06.1943 |
| Nationality of target : | American |
| Actual type of target : | Steam Freighter |
| Name of target : | Henry Knox |
| Year of launch : | 1942 |
| Actual tonnage : | 7176 BRT |
| Actual result : | sunk |
| Position of target : | 00.00n 70.15e |