The state of a ship when charged with materials equal to her capacity. If the goods be heavy, her burden is determined by weight; but if light, she carries as much as she can conveniently stow. A ton in measure is estimated at 2000 lbs. in weight; a vessel of 200 tons ought therefore to carry a weight equal to 400,000 lbs.; but if she cannot float high enough with as great a quantity of it as her hold will contain, then a diminution of it becomes necessary. Vessels carry heavy goods by the ton of 20 cwt., but lighter goods by a ton of cubic feet, which varies according to the custom of the port; in London it is 40, in India from 50 to 52, depending on the goods. Vessels can carry (not safely) twice their tonnage.