Space Hulks a massive conglomeration of lost ships and wrecks fused together. They drift in and out of the warp through space and during the millennia the lost ships join together into one enormous body. 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 in them is dangerous in the extreme. Most Space Hulks are infested with Genestealer's or Ork Looter's seeking to make a profit.