Nummer: 15818d
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 17.03.1943 |
| Time of attack : | 14:06 |
| Nationality of U-boat : | German |
| U-boat : | U 631 |
| Commander : | Krüger |
| Grid : | AK 8867 |
| presumed target type : | Tanker |
| presumed tonnage : | 7000 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | HX.229 |
| Date of observation : | 17.03.1943 |
| Time of observation : | 13:05 |
| Nationality of target : | Dutch |
| Actual type of target : | Steam Freighter |
| Name of target : | Terkoelei |
| Year of launch : | 1923 |
| Actual tonnage : | 5158 BRT |
| Actual result : | sunk |
| Position of target : | 51.45n 31.15w |
| Footnote : | U-384 fired three torpedoes and heard three detonations. At the same time U-631 reported the sinking of a tanker with one torpedo. It is not probable, that "Coracero" and "Terkoelei" were hit by the same U-boat. |
| related attacks : | Angriff 1 Angriff 2 Angriff 3 |
| Convoy : | HX.229 |
| Route of convoy : | (New York) - Halifax - United Kingdom |
| Remark to convoy : | Sep 1939 to Sep 1942 ab Halifax, then from New York (counter traffic = ON), vgl. HXF und SC. |