Imperial Armour 6: The Siege of Vraks, part 2 (2008), p166 — Chaos Dreadnought

Perhaps the most singular and most disturbing Chaos Dreadnoughts belong however to the Death Guard Legion. These monstrous creations are alive with organic corruption, their hulls blistered with oozing sores and weeping, filth encrusted wounds and other stigmata of the Plague God Nurgle. What living nightmare is experienced by the occupant of such a vile and horrific machine is best left unimagined.