Derfflinger

Improved armor protection on British ships highlighted the need to strengthen the armament of the new German ships. Eight 305 mm guns in four superfiring turrets were arranged along the ship's centerline. During the Battle of Jutland, Derfflinger sank British battlecruisers HMS Queen Mary and Invincible, but she was also seriously damaged in action. She took at least 17 hits from large-caliber shells and suffered the heaviest losses of life among all the ships that remained afloat. Because of her stalwart resistance at Jutland, the British nicknamed her "Iron Dog."