Nummer: 18623
| Area : | Western Area |
| Sea area : | English Channel |
| Date of attack : | 18.12.1944 |
| Nationality of U-boat : | German |
| U-boat : | U 486 |
| Commander : | Meyer |
| Grid : | BF 2516 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 6000 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | BTC.10 |
| Date of observation : | 18.12.1944 |
| Nationality of target : | British |
| Actual type of target : | Steam Freighter |
| Name of target : | Silverlaurel |
| Year of launch : | 1939 |
| Actual tonnage : | 6142 BRT |
| Actual result : | sunk |
| Position of target : | 50.07n 04.40w |
| Convoy : | BTC.10 |
| Route of convoy : | Milford Haven - Bristol Channel - Thames |
| Remark to convoy : | Invasion convoys (Dec 1944 to May 1945), counter traffic = TBC |