Nummer: 09506b
| Area : | Western Area |
| Sea area : | Central Atlantic |
| Date of attack : | 13.05.1942 |
| Time of attack : | 00:28 |
| Nationality of U-boat : | German |
| U-boat : | U 128 |
| Commander : | Heyse |
| Grid : | DS 6699 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 8000 BRT |
| presumed result : | damaged |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | SL.109 |
| Footnote : | U-128 fired a 4-torpedo salvo, and observed one detonation after 3:25 min, accompanied by a smoke pillar, and another detonation. |
| related attacks : | Angriff 1 |
| Convoy : | SL.109 |
| Route of convoy : | Sierra Leone (Freetown) - United Kingdom (Liverpool) |
| Remark to convoy : | Since Sep 1939; from May 1943 combined with MKS in Atlantic, counter traffic = OS. |