The Flotsam Graveyard is a large fields of shipwrecks that poses a hazard to shipping through Absalom's harbor, and serves to protect the city from foreign navies. No ship that carries more than six people or 500 pounds of cargo may sail through the Flotsam Graveyard helmd by its own pilot; instead, a trained helmsman from the Harbormaster's Grange must direct the craft through the hazard.[1] A tax is assessed by the city for the use of a pilot as well as the docking fee, which captains pay because any ship that wrecks in the harbor is forfeit to the primarch.[1]