Nummer: 28913b
| Area : | Pacific Ocean |
| Sea area : | Southeast Asia |
| Date of attack : | 26.03.1945 |
| Nationality of U-boat : | Japanese |
| U-boat : | Ha-84 |
| Commander : | Matsuda (Sakuichi) |
| Grid : | off Cebu |
| presumed target type : | Steam Freighter |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | unknown |
| Actual result : | hit not ascertained |
| Position of target : | Mindanao Sea |
| Footnote : | During March midget submarines from Cebu reported three transports sunk. - Possibly one of the targets of the Japanese midget submarine hit "Oliver Kelley" (7.176 grt), which was struck by what was believed to be a dud torpedo, in the Surigao Strait. There was only light damage. |
| related attacks : | Angriff 1 |
| Convoy : | unknown |