Nummer: 27807
| Area : | Pacific Ocean |
| Sea area : | Central Pacific |
| Date of attack : | 19.12.1941 |
| Nationality of U-boat : | Japanese |
| U-boat : | I-172 |
| Commander : | Togami |
| Grid : | Hawaii |
| presumed target type : | Steam Freighter |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 18.12.1941 |
| Time of observation : | 05:30 |
| Nationality of target : | American |
| Actual type of target : | Steam Freighter |
| Name of target : | Prusa |
| Year of launch : | 1919 |
| Actual tonnage : | 5113 BRT |
| Actual result : | sunk |
| Position of target : | 16.45n 156.00w |
| Footnote : | The Japanese Fleet submarines I-53 to I-75 were renumbered in May 1942 into I-153 to I-175. To avoid confusion these numbers are used in this list from the beginning. When numbers I-53 ff are used, they designate the large submarines built during the war. |
| updated on: | 00.00.0000 |
| Remark: | 150sm S Hawaii |