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Stone, 16 cubic feet (0.453 m 3) Salt, 42 US bushels (1.480 m 3) Lime, 40 US bushels (1.410 m 3) Coke, 28 US bushels (0.99 m 3) Wheat, 20 US bushels (0.705 m 3) The nearest thing to a standard cubic ton seems to be the "timber" cubic ton (40 cubic feet or 1.133 cubic metres) which is used by freight transport operators in the US. [1] [2]
2,240 pounds (1,016.0 kilograms; 1.0160 metric tons) exactly 12% more than the 2,000 pounds of the North American short ton, being 20 long hundredweight (112 lb) rather than 20 short hundredweight (100 lb) the weight of 35 cubic feet (0.991 m 3) [2] of salt water with a density of 64 pounds per cubic foot (1.03 g/cm 3) [1]
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).
Length is the length (undefined), in feet; Beam is the beam, in feet. 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.
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
V, the ship's total volume in cubic metres (m 3), and; K, a multiplier based on the ship volume. The value of the multiplier K increases logarithmically with the ship's total volume (in cubic metres) and is applied as an amplification factor in determining the gross tonnage value. K is calculated with a formula which uses the common or base-10 ...
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 ...
For practical purposes the displacement ton (DT) is a unit of volume, 35 cubic feet (0.9911 m 3), the approximate volume occupied by one ton of seawater (the actual volume varies with salinity and temperature). [16] It is slightly less than the 224 imperial gallons (1.018 m 3) of the water ton (based on distilled water).