The Doomsday Ark is a technological wonder, easily eclipsing the primitive energy weapons of the Imperium. Even fired at low power the doomsday cannon is ferociously destructive; when firing at full effect, its searing energy beams burn many times hotter than more conventional plasma weaponry. Infantry caught in the doomsday cannon's fury are obliterated instantly; armoured vehicles reduced to glowing slag. In the face of a shot from a doomsday cannon, nothing less than a Titan's void shields can hope to offer anything more than a fool's hope of protection.