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# Gross tonnage

Gross tonnage (often abbreviated as GT, G.T. or gt) is a nonlinear measure of a ship's overall internal volume. [1]

## Board of Trade

The Board of Trade is a British government department concerned with commerce and industry, currently within the Department for International Trade.

## Common logarithm

In mathematics, the common logarithm is the logarithm with base 10.

## Compensated gross tonnage

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.

## Deadweight tonnage

Deadweight tonnage (also known as deadweight; abbreviated to DWT, D.W.T., d.w.t., or dwt) or tons deadweight (TDW) is a measure of how much weight a ship can carry, not its weight, empty or in any degree of load.

## Displacement (ship)

The displacement or displacement tonnage of a ship is its weight, expressed in long tons of water its hull displaces.

## Great Britain

Great Britain, also known as Britain, is a large island in the north Atlantic Ocean off the northwest coast of continental Europe.

## Gross register tonnage

Gross register tonnage (GRT, grt, g.r.t., gt) or gross registered tonnage, is a ship's total internal volume expressed in "register tons", each of which is equal to.

## Injective function

In mathematics, an injective function or injection or one-to-one function is a function that preserves distinctness: it never maps distinct elements of its domain to the same element of its codomain.

## Lambert W function

In mathematics, the Lambert W function, also called the omega function or product logarithm, is a set of functions, namely the branches of the inverse relation of the function f(z).

## List of largest ships by gross tonnage

This is a list of some of the world's largest ships by gross tonnage.

## Moorsom System

The Moorsom System is a method created in Great Britain of calculating the tonnage or cargo capacity of sailing ships as a basis for assessing harbour and other vessel fees.

## Natural logarithm

The natural logarithm of a number is its logarithm to the base of the mathematical constant ''e'', where e is an irrational and transcendental number approximately equal to.

## Net register tonnage

Net register tonnage (NRT, nrt, n.r.t.) is a ship's cargo volume capacity expressed in "register tons", one of which equals to a volume of.

## Net tonnage

Net tonnage (often abbreviated as 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.

## Newton's method

In numerical analysis, Newton's method (also known as the Newton–Raphson method), named after Isaac Newton and Joseph Raphson, is a method for finding successively better approximations to the roots (or zeroes) of a real-valued function.

## Ton

The ton is a unit of measure.

## Tonnage

Tonnage is a measure of the cargo-carrying capacity of a ship.

## References

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