What is Tonnage?

Tonnage is a term used in transportation and shipping to refer to the cargo-carrying capacity of a vessel or the weight of goods being transported. It can also refer to the size or displacement of a vessel, which is a measure of the volume of water displaced by the ship's hull. Tonnage is typically measured in metric tons or long tons, and can be used to calculate various shipping-related metrics such as freight rates, port fees, and cargo volumes. The term can also be used in reference to the total weight of goods transported over a given period of time, such as annual tonnage figures for a particular port or shipping lane.