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- Projekt ASS: U-Boot-Erfolge der Achsenmächte 1939-1945
- Übersicht > ID 5510
| Area : | Pacific Ocean |
| Sea area : | South Pacific |
| Date of attack : | 08.02.1943 |
| 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) |
| Convoy : | OC.68 |
| Date of observation : | 08.02.1943 |
| Time of observation : | 02:25 |
| Nationality of target : | Australian |
| Actual type of target : | Steam Freighter |
| Name of target : | Iron Knight |
| Year of launch : | 1937 |
| Actual tonnage : | 4812 BRT |
| Actual result : | sunk |
| Position of target : | 36.51s 150.38e |
| Convoy : | OC.68 |
| Route of convoy : | Australian Coastal Convoy |
| Remark to convoy : | Ascertained in 1943 |
| updated on: | 00.00.0000 |
| Remark: | 36.51n |
