Nummer: 26821
| Area : | Indic Ocean |
| Sea area : | Southeast Asia |
| Date of attack : | 29.05.1943 |
| Time of attack : | 19:37 |
| Nationality of U-boat : | German |
| U-boat : | U 198 |
| Commander : | Hartmann |
| Grid : | JA 1223 |
| presumed target type : | Steam Freighter id |
| presumed tonnage : | 5231 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 29.05.1943 |
| Nationality of target : | British |
| Actual type of target : | Motor Freighter |
| Name of target : | Hopetarn |
| Year of launch : | 1939 |
| Actual tonnage : | 5231 BRT |
| Actual result : | sunk |
| Position of target : | 30.50s 39.32e |