Nummer: 16612b
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 11.05.1943 |
| Time of attack : | 20:00 |
| Nationality of U-boat : | German |
| U-boat : | U 402 |
| Commander : | Forstner |
| Grid : | CE 1547 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 4000 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | SC.129 |
| Date of observation : | 11.05.1943 |
| Nationality of target : | Norwegian |
| Actual type of target : | Steam Freighter |
| Name of target : | Grado |
| Year of launch : | 1918 |
| Actual tonnage : | 3082 BRT |
| Actual result : | sunk |
| Position of target : | 40.30n 32.30w |
| related attacks : | Angriff 1 |
| Convoy : | SC.129 |
| Route of convoy : | Sydney (Nova Scotia) - United Kingdom |
| Remark to convoy : | Slow (Atlantic) Convoys since Aug 1940, fast ones = HX, counter traffic = ON. |