The Ships-of-Prayers are the sailing vessels of The Vermillion, great organic vessels sculpted into shape by the accretions of thousands of worms. Those accretions have calcified, and a Ship-of-Prayers is akin to a floating fortress. The underside lives still, a maggoty network of enormous cillia that act like oars, allowing a Ship-of-Prayers to row itself, if commanded to by one of the priests of the Vermiscension.