Nummer: 28117
| Area : | Pacific Ocean |
| Sea area : | South Pacific |
| Date of attack : | 07.12.1942 |
| Time of attack : | 01:42 |
| Nationality of U-boat : | Japanese |
| U-boat : | I-24 |
| Commander : | Hanabusa |
| Grid : | Lunga Pt |
| presumed target type : | Transport Cargo |
| presumed result : | sunk |
| Used weapon(s) : | Midget submarine |
| Date of observation : | 07.12.1942 |
| Time of observation : | 06:59 |
| Nationality of target : | American |
| Actual type of target : | Transport Cargo |
| Name of target : | Alchiba (AK 23) |
| Year of launch : | 1939 |
| Actual tonnage : | 6198 BRT |
| Actual result : | damaged |
| Position of target : | Lunga Pt |
| Footnote : | I-16 launched her midget Ha-10 (Hoka/Ikuma) on Nov.28th and I-24 launched Ha-38 (Tsuji/Tsubokura) on Dec.7th. Both midgets were scuttled after they had fired their torpedoes. - "Alchiba" (AK 23) was damaged and beached, but later salvaged. She returned to service on Apr.14th, 1943. |
| updated on: | 00.00.0000 |
| Remark: | Ha-38 Tsuji (MIA) |