Nummer: 06018b
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 28.07.1941 |
| Time of attack : | 04:24 |
| Nationality of U-boat : | German |
| U-boat : | U 561 |
| Commander : | Bartels |
| Grid : | CF 3513 |
| presumed target type : | Steam Freighter |
| presumed tonnage : | 4000 BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 1 |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | OG.69 |
| Date of observation : | 28.07.1941 |
| Time of observation : | 04:26 |
| Nationality of target : | British |
| Actual type of target : | Steam Freighter |
| Name of target : | Wrotham |
| Year of launch : | 1927 |
| Actual tonnage : | 1884 BRT |
| Actual result : | sunk |
| Position of target : | 43n 17w |
| Footnote : | U-561 reported a hit on a big tanker, which burst into flames. But no tanker had joined convoy OG.69. - A freighter sank in only 30 seconds. |
| related attacks : | Angriff 1 Angriff 2 |
| Convoy : | OG.69 |
| Route of convoy : | United Kingdom - Gibraltar (out) |
| Remark to convoy : | Sep 1939 to Jul 1940 via South Ireland, Jul 1940 to Aug 1943 via North Channel; later KMS. |