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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 100 cubic feet (2.83 m 3). Replaced by Gross Tonnage (GT), gross register tonnage uses the total permanently enclosed capacity of the vessel as its basis for volume. Typically this ...
Therefore the volume of hold space required for several tuns was greater than the total of the capacity of those tuns. 252 imperial gallons is just over 40 cubic feet (1.1 m 3). British practice by the 19th century was for a ton of cargo volume to be 50 cubic feet (1.4 m 3).
Depth is the depth of the hold, in feet below the main deck. The numerator yields the ship's volume expressed in cubic feet. If a "tun" is deemed to be equivalent to 100 cubic feet, then the tonnage is simply the number of such 100 cubic feet 'tun' units of volume. 100 the divisor is unitless, so tonnage would be expressed in 'ft 3 of tun'. [1]
Deadweight tonnage is generally measured now in metric tons . Register tons are measured in cu. ft, with one register ton equivalent to 100 cubic feet (2.83 m 3). [needs update] As the TEU is an inexact unit, it cannot be converted precisely into other units. The related unit forty-foot equivalent unit, however, is defined as two TEU.
The ton is derived from the tun, the term applied to a cask of the largest capacity.This could contain a volume between 175 and 213 imperial gallons (210 and 256 US gal; 800 and 970 L), which could weigh around 2,000 pounds (910 kg) and occupy some 60 cubic feet (1.7 m 3) of space.
Defined in The International Convention on Tonnage Measurement of Ships that was adopted by the International Maritime Organization in 1969, the net tonnage replaced the earlier net register tonnage (NRT) which denoted the volume of the ship's revenue-earning spaces in "register tons", units of volume equal to 100 cubic feet (2.83 m 3). [1]
A shipping ton, freight ton, measurement ton or ocean ton is a measure of volume used for shipments of freight in large vehicles, trains or ships. In the USA, it is equivalent to 40 cubic feet (1.1 m 3) while in the UK it is 42 cubic feet (1.2 m 3). [1] [2] It should not be confused with other types of ton which also measure
Legally defined as 1.033 English feet in 1859 ≈ 0.314 858 m: foot (Clarke's) (H) ... cubic fathom: cu fm ≡ 1 fm × 1 fm × 1 fm ... register ton: ≡ 100 cu ft ...