Long tons are tons of 2,240 pounds. Short tons are tons of 2,000 pounds. Metric tons, or tonnes, are 1,000 kilos. Bill of lading tons are the tons on which the revenue is earned for shipment. If the cargo is more than 40 cubic feet per ton (or 1 cubic metre per tonne) shipment is charged on measurement; that is, every 40 cubic feet is charged as 1 ton. This is known as a measurement ton. If it is less than 40 cubic feet per ton the shipper is charged on weight. For example, a typical liner ship with 9,802 bill of lading tons on board has, in fact, only 3,857 tons of 2,240 pounds.