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Gross tonnage. Gross tonnage is calculated by measuring a ship's volume (from keel to funnel, to the outside of the hull framing) and applying a mathematical formula. Gross tonnage (GT, G.T. or gt) is a nonlinear measure of a ship's overall internal volume. Gross tonnage is different from gross register tonnage. [ 1 ]
Tonnage is a measure of the capacity of a ship, and is commonly used to assess fees on commercial shipping. The term derives from the taxation paid on tuns or casks of wine. In modern maritime usage, "tonnage" specifically refers to a calculation of the volume or cargo volume of a ship.
Shaft Horsepower (SHP) – The amount of mechanical power delivered by the engine to a propeller shaft. One horsepower is equivalent to 746 Watts. Tonnage – a number derived from any of several methods to calculate the volume or other number indicative of a ship's cargo carrying capacity. Gross tonnage – GT – Not expressible in units of ...
List of large sailing vessels. This is a list of large sailing vessels, past and present, including sailing mega yachts, tall ships, sailing cruise ships, and large sailing military ships. It is sorted by overall length. The list, which is in the form of a table, covers vessels greater than about 200 feet (61 m) LOA, which includes overhangs ...
Loaded displacement is the weight of the ship including cargo, passengers, fuel, water, stores, dunnage and such other items necessary for use on a voyage. These bring the ship down to its "load draft". [ 8 ] Full load displacement and loaded displacement have almost identical definitions. Full load is defined as the displacement of a vessel ...
Compensated Gross Tonnage (CGT) is an indicator of the amount of work that is necessary to build a given ship and is calculated by multiplying the tonnage of a ship by a coefficient, which is determined according to type and size of a particular ship. The standard CGT system was developed in 1977 by the OECD so that inter-country shipbuilding ...
Net tonnage is calculated by measuring a ship's internal volume and applying mathematical formulae. Net tonnage (NT, N.T. or nt) is a dimensionless index calculated from the total moulded volume of the ship's cargo spaces by using a mathematical formula. Defined in The International Convention on Tonnage Measurement of Ships that was adopted by ...
The combined deadweight tonnage of container ships and general cargo ships, which also often carry containers, represents 21.8% of the world's fleet. [ 58 ] As of 2009 [update] , the average age of container ships worldwide was 10.6 years, making them the youngest general vessel type, followed by bulk carriers at 16.6 years, oil tankers at 17 ...