British battlecruisers were designed to chase and destroy enemy cruisers from out of the range of those ships. They were not designed to be ships of the line and exchange broadsides with the enemy. One German and three British battlecruisers were sunk—but none were destroyed by enemy shells penetrating the belt armour and detonating the magazines. Each of the British battlecruisers was penetrated through a turret roof and her magazines ignited by flash fires passing through the turret and shell-handling rooms. "Lützow" sustained 24 hits and her flooding could not be contained. She was eventually sunk by her escorts' torpedoes after most of her crew had been safely removed (though six trapped stokers died when the ship was scuttled). "Derfflinger" and "Seydlitz" sustained 22 hits each but reached port (although in "Seydlitz"'s case only just).