The mathematical unit of tons is expressed in English letters as T or T, and the full English name is ton.

Unit conversion: 1 ton = 1000 kg; 1 kg = 0.00 1 ton

The unit of weight has a long history. In ancient times, all countries had their own units of measurement. China ancient unit of weight, Jun: 30 kg is one jun; A dozen guineas weigh one baht, 24 baht, 12 pounds.

China has specific units of measurement, such as international kilograms and tons, American and British pounds and so on.

Extended data:

Tonnage related terms:

1, gross tonnage. The actual cargo volume of the hull under the upper deck (or the so-called enclosed space in the cabin) is calculated per 100 cubic feet (about 2.83 cubic meters), and tonnage itself is not a term involving weight. Gross tonnage is the basis for calculating port fees, parking fees and dock parking fees. ?

2. Gross registered tonnage. The amount of cargo a ship can carry according to its registration certificate.

3. Net tonnage. Gross tonnage minus cubic feet of space reserved for crew cabin, cabin, fuel tank, engine room, cab, material room and ballast tank. It is the basis for calculating pilotage fee, customs tonnage tax, etc. ?

4. deadweight cargo capacity. Generally speaking, a ship can transport 20 tons.

In the charter party, fuel, fresh water and "ship constant" (such as kitchen supplies, paint, lubricating oil, engine oil, boiler cooling water, etc. ) is generally deducted from the deadweight tonnage of the ship, and then the actual cargo capacity of the ship is determined.

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