Nummer: 19503
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 19.04.1945 |
| Nationality of U-boat : | German |
| U-boat : | U 1023 |
| Commander : | Schroeteler |
| Grid : | AM 88-- |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 8000 BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 3 |
| Used weapon(s) : | Torpedo with gyro-angle and zig-zaggig course |
| Convoy : | unknown |
| Position of target : | S Ireland |
| Footnote : | U-1023 fired a spread of three LUT, heard and observed one detonation after about 00:50 min, and heard one more detonation in a convoy. |
| Convoy : | unknown |