Nummer: 15911
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 19.03.1943 |
| Time of attack : | 01:34 |
| Nationality of U-boat : | German |
| U-boat : | U 666 |
| Commander : | Engel |
| Grid : | AL 4855 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 4000 BRT |
| presumed result : | damaged |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | SC.122 |
| Footnote : | U-666 heard one detonation after 5:11 min. |
| Convoy : | SC.122 |
| Route of convoy : | Sydney (Nova Scotia) - United Kingdom |
| Remark to convoy : | Slow (Atlantic) Convoys since Aug 1940, fast ones = HX, counter traffic = ON. |