The Pride of Sin was the entirety of the fleet of outcast Emperor's Children Chaos Space Marine Zarghan Ironfist.
The vessel was a heavily modified Iconoclast Destroyer, slower moving than others of its class, suggesting heavier armour.[1a] It was described that:
"Turrets had been added here and there, and weapons of a pattern with which he was not familiar. Gargoyles encrusted the hull like barnacles. A massive head grinned from the prow. It was shaped like the tip of an enormous horned phallic member bearing the scowling features of some ancient daemon."[1b]
The ship was defeated above the Crone World of Belial IV in the Eye of Terror by the Star of Venam.[1c]