In July 1942, Captain Ernst Vogelsang piloted into the Gulf. On 6 July, within half an hour, he sank three ships from the twelve-ship convoy QS-15: the British registered "Dinaric" and "Hainaut", and the Greek vessel "Anastassios Pateras". Eventually depth charge runs by a ship, and four Curtiss P-40 Warhawk from No. 130 Squadron RCAF damaged the U-boat's ballast pumps and resulted in the loss of of fuel and a few crewmen. This attack drove the submarine to the bottom where it hid for 12 hours. The submarine then rushed out of the Gulf for repairs.