�A measure of the cargo capacity of the vessel. The term comes from taxation paid on barrels or barrels of wine. In modern marine use "span class="mytool">

Tonnage is usually used to estimate fees for commercial shipping.

Tonnage measurements are regulated by the IMO Convention on the Measurement of Tonnage of Ships of 1969 (London Rules), which applies to all ships built after July 1982.

" >�tonnage/a>�" specifically refers to the calculation of the volume or volume of the ship's cargo. Tonnage should not be confused with displacement, which refers to the actual weight of the vessel./p>

�Tonnage is usually used to estimate fees for commercial shipping./p>

�Tonnage measurements are regulated by the IMO Convention on the Measurement of Tonnage of Ships of 1969 (London Rules), which applies to all ships built after July 1982./p>

• �Gross capacity (GT) Grossspan class="mytool">

  Tonnage is usually used to estimate fees for commercial shipping.

  Tonnage measurements are regulated by the IMO Convention on the Measurement of Tonnage of Ships of 1969 (London Rules), which applies to all ships built after July 1982.

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  " >ttonnage/a>& - is a function of the volume of all enclosed spaces of the ship, measured from the outside of the hull frame. The numerical value for the GT of a ship is always less than the numerical values of the gross register capacity (GRT). Thus, gross tonnage is a kind of power derivative index, which is used to rank a vessel in order to determine the number of personnel, safety and other regulatory requirements and is expressed simply as GT, which is a unit without taking into account the unit, even if it is derived from cubic feet of volumetric capacity./li>
• �Net capacity (NT) Net tonnage/strong> - based on the calculation of the volume of all cargo spaces on the ship. This indicates the places for the ship to earn money and is a function of the molded volume of all cargo spaces on the ship. A generally accepted measurement system is important because ship registration fees, port charges, safety and staffing regulations, etc. may be based on gross tonnage (GT) or net tonnage (NT)./li>
• �Gross register tonnage (GRT) Gross register tonnage/strong>& - represents the total internal volume of the vessel, where one tonne of registration is equal to the volume of 100 cubic feet (2,83,168 m3); a volume that, when filled with fresh water, will weigh about 2,800 kg or 2.8 tons. Determining (and calculating) the internal volume is difficult; for example, the hold of a ship can be estimated for bulk grain (taking into account all the airspace in the hold) or for bales (excluding places where bulk could spill, but not packedspan class="mytool">�cargo/a>)). Gross tonnage was replaced by gross tonnage in 1982 in accordance with the 1969 Tonnage Measurement Convention, when all vessels measured inspan class="mytool">�OTO/a>,, were either disposed of or re-measured in GT by 1994./li>
• �Net register Capacity (NRT) Net register tonnage/strong>& - is the volume of cargo that the vessel can carry. so,span class="mytool">�gross/a> the register tonnage is less than the amount of space that does not hold the cargo (for example, the coupe engine, the station control panel and the crew space, again with differences depending on which port or country the calculations are made). It represents the volume of the ship available for the transportation of goods or passengers. It was replaced with a net capacity in 1994 in accordance with the 1969 Tonnage Measurement Convention./li>
• �Universal Panama Canal Measurement System (PC/UMS) The Panama Canal/Universal Measurement System/strong> - based on the net capacity modified for the purposes of the Panama Canal. One ton of PC/UMS is equivalent to 100 cubic feet of capacity./li>
• �Net capacity of the Suez Canal (SCNT) Suez Canal Net Tonnage/strong>& - received with a number of modifications from the former net register tonnage of the Moors system and was established by the International Commission of Constantinople in its Protocol of December 18, 1873. It is still in use as amended by the Suez Canal Navigation Authority and is registered in the Suez Canal Measuring Certificate./li>
• �Thames Measurements (TM) Thames Measurement/strong> - This is another volumetric system commonly used for small vessels such as yachts; it uses a formula based on the length of the vessel and the beam. It was created in 1855 as a variation of the old builders dimension by the Royal Yacht Club in Thames and was designed for small vessels such as yachts. It was originally used to calculate port charges for yachts; this formula was also used in some early systems for yacht racing./li>