Nummer: 00422
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 17.10.1939 |
| Time of attack : | 16:40 |
| Nationality of U-boat : | German |
| U-boat : | U 46 |
| Commander : | Sohler |
| Grid : | BE 9169 |
| presumed target type : | Tanker |
| presumed tonnage : | 8000 BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 1 |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | HG.3 |
| Date of observation : | 17.10.1939 |
| Time of observation : | 16:42 |
| Nationality of target : | British |
| Actual type of target : | Steam Freighter |
| Name of target : | City of Mandalay |
| Year of launch : | 1925 |
| Actual tonnage : | 7028 BRT |
| Actual result : | sunk |
| Position of target : | 44.57n 13.36w |
| Convoy : | HG.3 |
| Route of convoy : | Gibraltar - United Kingdom (home) |
| Remark to convoy : | Sep 1939 to Sep 1942, then MKF und MKS |