Nummer: 28001
| Area : | Pacific Ocean |
| Sea area : | North Pacific |
| Date of attack : | 15.07.1942 |
| Nationality of U-boat : | Japanese |
| U-boat : | I-7 |
| Commander : | Koizumi |
| presumed target type : | Steam Freighter |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) + Gunfire |
| Date of observation : | 14.07.1942 |
| Time of observation : | 20:15 |
| Nationality of target : | American |
| Actual type of target : | Steam Freighter |
| Name of target : | Arcata |
| Year of launch : | 1919 |
| Actual tonnage : | 2722 BRT |
| Actual result : | sunk |
| Position of target : | 53.41n 157.45w |