Nummer: 07711
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 05.02.1942 |
| Time of attack : | 22:36 |
| Nationality of U-boat : | German |
| U-boat : | U 136 |
| Commander : | Zimmermann |
| Grid : | AL 6146 |
| presumed target type : | Destroyer |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | ON.63 |
| Date of observation : | 05.02.1942 |
| Nationality of target : | British |
| Actual type of target : | Corvette |
| Name of target : | Arbutus (K.86) |
| Year of launch : | 1940 |
| Actual tonnage : | 925 ts |
| Actual result : | sunk |
| Position of target : | 55.05n 18.43w |
| Convoy : | ON.63 |
| Route of convoy : | United Kingdom - North America |
| Remark to convoy : | 1st series: Jul 1941 to Mar 1943 ON and ONS combined, later ON mit continuing and ONS with new numbering (counter traffic HX and SC) |