The documentary based on a hopeless historian I will not mention claims the Swordfish pilots were tasked with firing their torpedoes at the propellors and rudder. This is totally ridiculous. The pilots were fighting against terrible weather and appalling anti aircraft fire. Hitting the rudder was a complete fluke. No pilot then or even now could possibly hit a battleships rudder under those conditions. Bismarck was unlucky just like HMS Hood which blew up by the way not just sunk as shown on this piece of inaccurate rubbish. The British film Sink the Bismarck was far more accurate in its portrayal.