Nummer: 16212
| Area : | Western Area |
| Sea area : | West African Coast |
| Date of attack : | 11.04.1943 |
| Time of attack : | 05:56 |
| Nationality of U-boat : | German |
| U-boat : | U 181 |
| Commander : | Lüth |
| Grid : | ET 8881 |
| presumed target type : | Steam Freighter id |
| presumed tonnage : | 5983 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Date of observation : | 11.04.1943 |
| Nationality of target : | British |
| Actual type of target : | Steam Freighter |
| Name of target : | Empire Whimbrel |
| Year of launch : | 1919 |
| Actual tonnage : | 5983 BRT |
| Actual result : | sunk |
| Position of target : | 02.31n 15.55w |
| Footnote : | U-181 reported "Empire Whimbrel" under her old name "Monasses". |
Steam Freighter Empire Whimbrel ex American Monasses (bis 1941)