While " Moltke " and " Von der Tann " were drawing the fire of the V Battle Squadron battleships, " Seydlitz " and " Derfflinger " were able to concentrate their fire on the British battlecruisers; between 17 : 25 and 17 : 30, at least five shells from " Seydlitz " and " Derfflinger " struck " Queen Mary ", causing a catastrophic explosion that destroyed the ship . " Moltke " s commander, " Kapit�n zur See " von Karpf, remarked that " The enemy's salvos lie well and close; their salvos are fired in rapid succession, the fire discipline is excellent !"
