Nummer: 06610a
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 20.09.1941 |
| Time of attack : | 03:27 |
| Nationality of U-boat : | German |
| U-boat : | U 552 |
| Commander : | Topp |
| Grid : | AD 7583 |
| presumed target type : | Tanker |
| presumed tonnage : | 10000 BRT |
| presumed result : | sunk |
| Number of torpedoes/mines : | 2- |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | SC.44 |
| Date of observation : | 19.09.1941 |
| Time of observation : | 23:30 |
| Nationality of target : | Norwegian |
| Actual type of target : | Motor Tanker |
| Name of target : | Barbro |
| Year of launch : | 1934 |
| Actual tonnage : | 6325 BRT |
| Actual result : | sunk |
| Position of target : | 61.30n 35.00w |
| Footnote : | U-552 hit "Barbro" with two torpedoes, and U-69 fired a coup de grâce that did not detonate. |
| related attacks : | Angriff 1 |
| Convoy : | SC.44 |
| Route of convoy : | Sydney (Nova Scotia) - United Kingdom |
| Remark to convoy : | Slow (Atlantic) Convoys since Aug 1940, fast ones = HX, counter traffic = ON. |