Space Hulks

A space hulk is the term given by the Imperium of Man to the wreckage of a starship or a mangled twist of various starships and artificial debris found drifting through the vacuum of the Milky Way Galaxy without apparent direction. Many times they are so huge that they have their own atmosphere and gravity. Since the hulks often exit and re-enter the Warp seemingly at random, searching or traveling within them is dangerous in the extreme. Space hulks have many times been used as a means of transport by certain unsophisticated factions. The Orks, the Genestealers, and even Heretic Astartes Renegades use them occasionally to invade other worlds. As the Warp jump of space hulks is essentially made in a random direction, this gives them the advantage of surprise over Imperial or Asuryani forces.