tonnage measurement of ships
1Tonnage — Not to be confused with Ton. Tonnage is a measure of the size or cargo carrying capacity of a ship. The term derives from the taxation paid on tuns or casks of wine, and was later used in reference to the weight of a ship s cargo; however, in… …
2Net tonnage — is calculated by measuring a ship s internal volume and applying mathematical formulae. 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… …
3Gross tonnage — Gross Tonnage, along with Net Tonnage, was defined by The International Convention on Tonnage Measurement of Ships, 1969 , adopted by the International Maritime Organization in 1969, and came into force on July 18, 1982. These two measurements… …
4Net register tonnage — See also: Ton#Units of volume 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 100 cubic feet (2.83 m3). It is calculated by reducing non revenue… …
5Builder's Old Measurement — (BOM) is the method of calculating the size or cargo capacity of a ship used in England from approximately 1720 to 1849. The BOM estimated the tonnage of a ship based on length and maximum beam. The formula is: Tonnage = frac {({Length} Beam}… …
6Gross Register Tonnage — NOTOC . [The corresponding mass depends on what the volume is filled with, for example, 1 GRT of water weighs around 2,800 kg.] This calculation of gross register tonnage is complex; a hold can, for instance, be assessed for grain (accounting for …
7tonnage — ton‧nage [ˈtʌnɪdʒ] noun [countable, uncountable] 1. the total number of tons that something weighs: • The aim is to obtain the maximum saleable tonnage at reasonable cost. 2. TRANSPORT the size of a ship or the amount of goods it can carry,… …
8international tonnage certificate — A certificate issued by a government department in accordance with the International Convention of Tonnage Measurement of Ships stating the gross and net tonnages …
9tonnage — /tun ij/, n. 1. the capacity of a merchant vessel, expressed either in units of weight, as deadweight tons, or of volume, as gross tons. 2. ships collectively considered with reference to their carrying capacity or together with their cargoes. 3 …
10Compensated 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… …
