Bismarck was a German battleship, the keel of which was laid in 1936 and launched in February 1939. The battleship entered the rope service in the German Navy (German Kriegsmarine) in August 1940. Bismarck's top speed was around 29-30 knots. The main armament was 8 380 mm guns in four twin turrets, and the secondary armament included: 12 150 mm guns or 16 105 mm guns. It was ordered to replace in line the old battleship Hannover, completely obsolete in the 1930s. He made his maiden voyage in September 1940, when he was ferry to Gdynia, which was to be his home port. Bismarck's combat trail during World War II was very short. Bismarck set out on its first combat voyage on May 19, 1941 - it was supposed to perform cruising operations in the Atlantic and attack primarily Allied convoys. In carrying out this plan, Bismarck, with the accompanying heavy cruiser Prinz Eugen, was already crossing the Danish Strait a few days later. It is worth noting that there is a probable hypothesis assuming that the battleship Bismarck was self-sunk by the crew in connection with the damage sustained in combat on May 27, which made it impossible to return to the base on its own.