Moorings are an assemblage of anchors, chains, and bridles, laid athwart the bottom of a river or harbour, to ride the shipping therein. These anchors have generally but one fluke, which is sunk in the river near low-water mark. Two anchors, being thus fixed on the opposite sides of the river, are furnished with a chain extending across, from one to the other; in the middle of which is a large square link, whose lower end terminates in a swivel, to which are attached the bridles, which are short pieces of cables well served, whose upper ends are drawn into the ship, and secured to the bits, etc. By these means the vessel veers round easily, according to the change of the wind or the tide; in some places, however, particularly on rivers, each ship takes in a bridle astern, also, by which she becomes moored head and stern.