Stays are ropes, wires, or rods on sailing vessels that run fore-and-aft along the centerline from the masts to the hull, deck, bowsprit, or to other masts which serve to stabilize the masts. On a ship with a single mast, stays that run aft are called backstays and stays that run forward are called forestays. Along with shrouds, they form the primary stabilization for the standing rigging.