Nummer: 16702b
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 13.05.1943 |
| Time of attack : | 19:36 |
| Nationality of U-boat : | German |
| U-boat : | U 640 |
| Commander : | Nagel |
| Grid : | AD 8870 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 6000 BRT |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | unknown |
| Footnote : | U-640 heard two hits and sinking noises. |
| related attacks : | Angriff 1 |
| Convoy : | unknown |