Nummer: 14206
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 18.12.1942 |
| Time of attack : | 02:26 |
| Nationality of U-boat : | German |
| U-boat : | U 621 |
| Commander : | Kruschka |
| Grid : | BD 3288 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 5000 BRT |
| presumed result : | damaged |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | ONS.152s |
| Date when ship was reported missed : | 21.12.1942 |
| Nationality of target : | Greek |
| Actual type of target : | Steam Freighter |
| Name of target : | Oropos |
| Year of launch : | 1913 |
| Actual tonnage : | 4474 BRT |
| Actual result : | sunk |
| Position of target : | 51n 37w |
| Footnote : | U-621 heard a dull hit, and a detonation after 25 min. Later observed dark smoke and a burning smell. - "Oropos" was reported missing since Dec.21st, 1942. |
| Convoy : | ONS.152s |
| Route of convoy : | United Kingdom - North America |
| Remark to convoy : | 1st series: Jul 1941 to Mar 1943 ON and ONS combined, later ON mit continuing and ONS with new numbering (counter traffic HX and SC) |