Nummer: 28205
| Area : | Pacific Ocean |
| Sea area : | South Pacific |
| Date of attack : | 30.01.1943 |
| Nationality of U-boat : | Japanese |
| U-boat : | I-21 |
| Commander : | Matsumura |
| Grid : | Sydney |
| presumed target type : | Steam Freighter |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 30.01.1943 |
| Nationality of target : | British |
| Actual type of target : | Steam Freighter |
| Name of target : | Giang Ann |
| Year of launch : | 1902 |
| Actual tonnage : | 1063 BRT |
| Actual result : | target visibly missed |
| Footnote : | I-21 was missing "Giang Ann" (1063 grt). |
| updated on: | 00.00.0000 |