What is Net Tonnage, Gross Tonnage, Light Ship or Light Weight and Dead Weight tonnage
What is Net Tonnage, Gross Tonnage, Light Ship or Light Weight and Dead Weight tonnage
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Net Tonnage, Gross Tonnage, Light Ship or Light Weight and Dead Weight tonnage - Net tonnage (NT) is based on a calculation of the volume of all cargo spaces of the ship. It indicates a vessel’s earning space and is a function of the moulded volume of all cargo spaces of the ship.
Gross tonnage (GT) is a function of the volume of all ship's enclosed spaces (from keel to funnel) measured to the outside of the hull framing. The numerical value for a ship's GT is always smaller than the numerical values for both her gross register tonnage and the GRT value expressed equivalently in cubic meters rather than cubic feet.
It is calculated by using the formula : GT = K \cdot V, where V = total volume in m3 and K = a figure from 0.22 up to 0.32, depending on the ship’s size (calculated by : K = 0.2 + 0.02 \cdot\log_{10}V)
Gross tonnage in the U.S. is based on how many bails of cotton the interior of the ship will hold. The rule is 200 years old.
Gross and Net Tonnage are volumens - each ton is 2,83 cubm. HOw to measure it is found in the Int. Tonnage convention from 1979. Light ship is the weight in metric ton of the ship it self without cargo. Dead weight is the amount of metric ton of cargo, stores and fuel the vessel is able to carry.
Gross tonnage in the U.S. is based on how many bails of cotton the interior of the ship will hold. The rule is 200 years old.
Gross and Net Tonnage are volumens - each ton is 2,83 cubm. HOw to measure it is found in the Int. Tonnage convention from 1979. Light ship is the weight in metric ton of the ship it self without cargo. Dead weight is the amount of metric ton of cargo, stores and fuel the vessel is able to carry.
Light ship or Light weight measures the actual weight of the ship with no fuel, passengers, cargo, water, etc. on board.
Dead Weight Tonnage (often abbreviated as DWT for deadweight tonnes) is the displacement at any loaded condition minus the lightship weight. It includes the crew, passengers, cargo, fuel, water, and stores. Like Displacement, it is often expressed in long tons or in metric tons.
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