Nummer: 28013
| Area : | Pacific Ocean |
| Sea area : | South Pacific |
| Date of attack : | 29.08.1942 |
| Nationality of U-boat : | Japanese |
| U-boat : | Ro-33 |
| Commander : | Kuriyama |
| presumed target type : | Steam Freighter |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 29.08.1942 |
| Nationality of target : | Australian |
| Actual type of target : | Motor Freighter |
| Name of target : | Malaita |
| Year of launch : | 1933 |
| Actual tonnage : | 3310 BRT |
| Actual result : | damaged |
| Position of target : | 09.50s 144.55e |