Upon returning to Ark Royal, the Swordfish loaded torpedoes equipped with contact detonators. The second attack comprised fifteen aircraft and was launched at 19:10. At 20:47, the torpedo bombers began their attack descent through the clouds. As the Swordfish approached, Bismarck fired her main battery at Sheffield, straddling the cruiser with her second salvo. Shell fragments rained down on Sheffield, killing three men and wounding several others.Sheffield quickly retreated under cover of a smoke screen. The Swordfish then attacked; Bismarck began to turn violently as her anti-aircraft batteries engaged the bombers. One torpedo hit amidships on the port side, just below the bottom edge of the main armour belt. The force of the explosion was largely contained by the underwater protection system and the belt armour but some structural damage caused minor flooding.
The second torpedofired by pilot John Moffatstruck Bismarck in her stern on the port side, near the port rudder shaft. The coupling on the port rudder assembly was badly damaged and the rudder became locked in a 12° turn to port. The explosion also caused much shock damage. The crew eventually managed to repair the starboard rudder but the port rudder remained jammed. A suggestion to sever the port rudder with explosives was dismissed by Lütjens, as damage to the screws would have left the battleship helpless.At 21:15, Lütjens reported that the ship was unmanoeuvrable