The German defenders began firing on the British aircraft as they approached "Tirpitz". Four No. 9 Squadron Lancasters, at least one from No. 617 Squadron, and the No. 463 Squadron film aircraft, were damaged by anti-aircraft fire. The No. 617 Squadron Lancaster lost so much fuel from two hits that its pilot judged that the aircraft would not be able to reach RAF Sumburgh or the USSR. Instead, he decided to put down in northern Sweden so that the crew could avoid being made prisoners of war. The aircraft made a crash landing in a bog near Porjus. All of the crew survived, and were eventually repatriated to the UK by the Swedish Government. The damage inflicted on the other Lancasters was not significant.