Gross register tonnage

The register ton is an obsolete unit of measurement for maritime vessels. It corresponds exactly to 100 English cubic feet and approximately 2.83 cubic meters.

Background and History

To obtain a measure of value for merchant ships, they are measured. However, since merchant vessels - for example, in contrast to warships with their largely the same weight - the loading state changes often, it is not enough to use the water displacement as a benchmark. Therefore, the whole of built tonnage is measured and from this space the crew and engine rooms shall be deducted, which are not directly related to the charge of the ship, so as to come to the gross and net tonnage of a vessel or the gross and net tonnage.

Until 18 July 1994, the registered tonnage was a valid international unit volume. It was used together with the gross registered tonnage ( GRT short ) and net registered ton (short NRT). Since 1 July 1994, the tonnage of a ship in gross tonnage (GT ) and net tonnage is calculated ( NRZ), the two last-mentioned dimensionless numbers are. After gross tonnage and fees for port, channel, lock and pilotage are calculated among others.

GRT

The gross registered tonnage (GRT ) or gross (GT, not to be confused with gross tonnage ) is a ( in Germany, in Austria since 1969 later) obsolete measure of space for the size of merchant ships.

1 GRT = 100 cubic feet = 2.8316846592 m³

Although the word ton is included therein, the gross registered tonnage must not be equated with mass data such as the load capacity. They should be Nor confusion with the standard displacement of warships, the standard ton.

About current capacity measures for ships of Article ship dimensions provides information.

Pictures of Gross register tonnage

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