page_title: German battleship Tirpitz
section_title: Operation Catechism
hierarchical_section_title: German battleship Tirpitz / Service history / British attacks on Tirpitz / Operation Catechism
caption_attribution_description: English: Royal Air Force Bomber Command, 1942-1945. The German battleship TIRPITZ, lying capsized in in Tromso fjord, attended by a salvage vessel. The already damaged ship was finally sunk in a combined daylight attack by Nos. 9 and 617 Squadrons RAF on 12 November 1944, (Operation CATECHISM). The hole in the hull by the starboard propeller shaft was cut by the Germans to allow access to salvage crews.
context_page_description: Tirpitz was the second of two Bismarck-class battleships built for Nazi Germany's Kriegsmarine prior to and during the Second World War. Named after Grand Admiral Alfred von Tirpitz, the architect of the Kaiserliche Marine, the ship was laid down at the Kriegsmarinewerft Wilhelmshaven in November 1936 and her hull was launched two and a half years later. Work was completed in February 1941, when she was commissioned into the German fleet. Like her sister ship Bismarck, Tirpitz was armed with a main battery of eight 38-centimetre guns in four twin turrets. After a series of wartime modifications she was 2000 tonnes heavier than Bismarck, making her the heaviest battleship ever built by a European navy.
  After completing sea trials in early 1941, Tirpitz briefly served as the centrepiece of the Baltic Fleet, which was intended to prevent a possible break-out attempt by the Soviet Baltic Fleet. In early 1942, the ship sailed to Norway to act as a deterrent against an Allied invasion. While stationed in Norway, Tirpitz was also intended to be used to intercept Allied convoys to the Soviet Union, and two such missions were attempted in 1942.
context_section_description: Operation Catechism, the final British attack on Tirpitz, took place on 12 November 1944. The ship again used her 38 cm guns against the bombers, which approached the battleship at 09:35; Tirpitz's main guns forced the bombers to disperse temporarily, but could not break up the attack. A force of 32 Lancasters from Nos. 9 and 617 Squadrons dropped 29 Tallboys on the ship, with two direct hits and one near miss. Several other bombs landed within the anti-torpedo net barrier and caused significant cratering of the seabed; this removed much of the sandbank that had been constructed to prevent the ship from capsizing. One bomb penetrated the ship's deck between turrets Anton and Bruno but failed to explode. A second hit amidships between the aircraft catapult and the funnel and caused severe damage. A very large hole was blown in the ship's side and bottom; the entire section of belt armour abreast of the bomb hit was completely destroyed. A third bomb may have struck the port side of turret Caesar.
  The amidships hit caused significant flooding and quickly increased the port list to between 15 and 20 degrees. In ten minutes the list increased to 30 to 40 degrees, and the captain issued the order to abandon ship. The list increased to 60 degrees by 09:50; this appeared to stabilise temporarily. Eight minutes later, a large explosion rocked turret Caesar. The turret roof and part of the rotating structure were thrown 25 m (82 ft) into the air and into a group of men swimming to shore, crushing them. Tirpitz rapidly rolled over and buried her superstructure in the sea floor.
  In the aftermath of the attack, 82 men trapped in the upturned hull were rescued by cutting through the exposed bottom. Figures for the death toll vary from approximately 950 to 1,204. Approximately 200 survivors of the sinking were transferred to the heavy cruiser Lützow in January 1945.
  The performance of the Luftwaffe in the defence of Tirpitz was heavily criticised after her loss. Major Heinrich Ehrler, the commander of III./Jagdgeschwader 5 (3rd Group of the 5th Fighter Wing), was blamed for the Luftwaffe's failure to intercept the British bombers. He was court-martialled in Oslo and threatened with the death penalty. Evidence was presented that his unit had failed to help the Kriegsmarine when requested. He was sentenced to three years in prison, but was released after a month, demoted, and reassigned to an Me 262 fighter squadron in Germany. Ehrler was exonerated by further investigations which concluded poor communication between the Kriegsmarine and the Luftwaffe had caused the fiasco; the aircrews had not been informed that Tirpitz had been moved off Håkøya two weeks before the attack.
  The wreck of Tirpitz remained in place until after the war, when a joint German-Norwegian company began salvage operations. Work lasted from 1948 until 1957; fragments of the ship were sold by a Norwegian company. Ludovic Kennedy wrote in his history of the vessel that she "lived an invalid's life and died a cripple's death".
caption: Tirpitz capsized
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