What does merchant tonnage mean?
/ (ˈtʌnɪdʒ) / noun. the capacity of a merchant ship expressed in tons, for which purpose a ton is considered as 40 cubic feet of freight or 100 cubic feet of bulk cargo, unless such an amount would weigh more than 2000 pounds in which case the actual weight is used. the weight of the cargo of a merchant ship.
What is the total tonnage?
tonnage, in shipping, the total number of tons registered or carried or the total carrying capacity.
What is tonnage geology?
The tonnage factor provides the mechanism for the conversion from volume of ore to weight of ore. In the English system, the tonnage factor is normally expressed as cubic feet per ton of ore. In the metric system, the tonnage factor is the specific gravity of the ore.
Is tonnage the same as tons?
Non-maritime usage of the term tonnage The tonnage may be expressed as 1 tonne (1,000 kg; 2,205 lb), 1 short ton (907.2 kg; 2,000 lb) or 1 long ton (1,016 kg; 2,240 lb). Often this distinction is not of any importance, however sometimes it is critical to define the exact units in which the tonnage is expressed.
What is Suez Canal tonnage?
The total net tonnages recorded 112.1 million tons, compared to 100.6 million tons in October 2020, an increase of 11.5 million tons or 11.4 percent.
What is net tonnage used for?
Net tonnage is used to calculate the port duties and should not be taken as less than 30 per cent of the ship’s gross tonnage.
How is boat tonnage calculated?
For a boat with a simple sailing hull: Gross Tonnage = (. 5 x L x B x D) divided by 100. For a sailing boat with keel: Gross Tonnage = (. 375 x L x B x D) divided by 100.
What is tonnage in ore?
What is grade and tonnage?
These data consist of. average grades of each metal or mineral commodity of. possible economic interest and tonnages based on the total of. production, reserves and resources at the lowest cutoff grade. for which data are available.
What is tonnage Certificate?
The tonnage certificate reflects the result of the measurement of the volume of the ship’s spaces and shows both, the gross tonnage and the net tonnage.
How Suez Canal tonnage is calculated?
The GRT of any particular vessel was obtained by dividing the total enclosed volumes by 100(when measuring in ft or ft3) or by 2.83 when measuring in standard SI units of m or m3. This value was a measure of the total weight of the vessel structure in practical terms.
How do you find net tonnage?
In calculating the net tonnage, apply the machinery factor (M) to the gross register tonnage before truncation. For example, if the gross tonnage is calculated to be 6.99 (before truncation), and M is 0.8, the net tonnage (before truncation) is 5.592. This gives a gross tonnage of 6 and a net tonnage of 5.
How do you calculate tonnage in geology?
Computation of Tonnage and Grade of Ore by Blocks The volume divided by the volume-per-ton factor gives the tons of ore in the block. Multiplying the tonnage in each block by its average assay value, adding the products, and dividing this sum by the sum of the tonnages gives the average assay value of all the blocks.
What is tonnage factor in mining?
What does grade mean in mining?
All precious metals are graded by the amount of metal within the ore. A higher grade means that it takes less effort to remove the metal from the ground. Gold is rated based on ore density measured by grams per tonne, or g/t. Many of the world’s highest-grade mines are in the U.S., Russian, and Peru.
What is International tonnage Certificate 1969?
(1) An International Tonnage Certificate (1969) shall be issued to every ship, the gross and net tonnages of which have been determined in accordance with the present Convention. (2) Such certificate shall be issued by the Administration or by any person or organization duly authorized by it.
What is Suez tonnage?
Suez Canal Net Tonnage (SCNT) is derived with a number of modifications from the former net register tonnage of the Moorsom System and was established by the International Commission of Constantinople in its Protocol of 18 December 1873.