Nummer: 26213
| Area : | Indic Ocean |
| Sea area : | Ostafrika Küste |
| Date of attack : | 12.06.1942 |
| Time of attack : | 19:33 |
| Nationality of U-boat : | Japanese |
| U-boat : | I-20 |
| Commander : | Yamada (T.) |
| presumed target type : | Steam Freighter |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 12.06.1942 |
| Nationality of target : | British |
| Actual type of target : | Motor Freighter |
| Name of target : | Clifton Hall |
| Year of launch : | 1938 |
| Actual tonnage : | 5063 BRT |
| Actual result : | sunk |
| Position of target : | 16.25s 40.10e |