and telling them that he would wear the decoration in their name. On 19 September 1942, U-156 was roughly south of Freetown and the crew was still repairing minor damage, when the lookout spotted a ship at 04:30. The target was the British ship Quebec City, en route from Cape Town to Freetown. Hartenstein attacked from a submerged position and hit Quebec City with one torpedo fired from tube VI. Hartenstein surfaced and approached the lifeboats and asked the survivors for the ship's name. Quebec City did not sink easily and U-156 fired 58 rounds from the 37 mm (1.46 in) flak gun and seven further shots from the 10.5 cm gun before Hartenstein ordered a cease fire. After a direct hit in the ship's stern ammunition magazine and an explosion, Quebec City slowly sank. According to William Clark, a member of Quebec Citys crew, Hartenstein made sure that the survivors had enough water and provisions and that Captain William Thomas had the exact coordinates. This account of that attack and the impression that the humanitarian actions of Hartenstein made is documented in the book by David Cledlyn Jones, The Enemy We Killed, My Friend. Jones himself disagrees, stating that Hartenstein was concerned about the survivors' well-being but did not inquire about provisions, nor did he offer additional food or water. Hartenstein did express that it would have been his wish to tow them at least some distance to the African coast, but explained that he was not able to do so as he recently had been attacked while attempting to aid survivors. Fifth patrol and death During his fifth patrol (16 January 1943 – 8 March 1943), on 8 March 1943, Hartenstein and the entire crew of U-156 were killed in action by depth charges from a U.S. PBY Catalina aircraft (VP-53/P-1; Lieutenant E. Dryden), east of Barbados. The Catalina dropped four Mark 44 Torpex water-bombs at 13:15 from an altitude of to which straddled U-156. Two bombs were observed to hit the water to starboard and just aft of U-156, lifting it and breaking it in two, followed by an explosion. At least eleven survivors were seen swimming in the water. The Americans dropped two rubber rafts and rations, and five men were seen to reach one of the rafts. The USS Barney was dispatched from Trinidad to rescue the survivors. The search was abandoned on 12 March