 "U-43" went to sea again on 10 November 1941, this time she was more successful, sinking three ships near the Azores.Early on the morning of 29 November, "U-43" fired two torpedoes at the 5,569 ton British merchant ship "Thornliebank", part of Convoy OS-12, and loaded with general cargo and munitions, about north-north-west of the Azores.Both torpedoes struck the ship, which exploded violently.