The leading British ships spotted Lützow and Derfflinger, and began firing on them. In the span of 8 minutes, the battlecruiser Invincible scored eight hits on Lützow; these hits were mainly concentrated in the ship's bow and were the primary cause of the flooding that would eventually cause her loss. In return, both Lützow and Derfflinger concentrated their fire on Invincible, and at 19:33, Lützow's third salvo penetrated Invincible's center turret and ignited the magazine; the ship disappeared in a series of massive explosions.[44]