Nummer: 15711a
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 16.03.1943 |
| Time of attack : | 23:00 |
| Nationality of U-boat : | German |
| U-boat : | U 603 |
| Commander : | Bertelsmann |
| Grid : | BD 1539 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 5000 BRT |
| presumed result : | damaged |
| Used weapon(s) : | Torpedo with preset course |
| Convoy : | HX.229 |
| Date of observation : | 16.03.1943 |
| Time of observation : | 22:00 |
| Nationality of target : | Norwegian |
| Actual type of target : | Motor Freighter |
| Name of target : | Elin K. |
| Year of launch : | 1937 |
| Actual tonnage : | 5214 BRT |
| Actual result : | sunk |
| Position of target : | 50.38n 34.46w |
| Footnote : | U-603 fired three FAT- and one G7e- torpedo, and heard one certain detonation and one possible. |
| related attacks : | Angriff 1 |
| 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. |