TONNAGE
tonnage, tunnage, tonnage duty
(noun) a tax imposed on ships that enter the US; based on the tonnage of the ship
Source: WordNet® 3.1
Etymology
Noun
tonnage (countable and uncountable, plural tonnages)
The number of tons of water that a floating ship displaces.
The capacity of a ship's hold etc in units of 100 cubic feet.
The number of tons of bombs dropped in a particular region over a particular period of time.
A charge made on each ton of cargo when landed etc.
The total shipping of a fleet or nation.
Coordinate terms
• (charge per ton): cranage, demurrage, shippage, shorage, wharfage
Anagrams
• negaton
Source: Wiktionary
Ton"nage (; 48), n. Etym: [From Ton a measure.]
1. The weight of goods carried in a boat or a ship.
2. The cubical content or burden of a vessel, or vessels, in tons;
or, the amount of weight which one or several vessels may carry. See
Ton, n. (b).
A fleet . . . with an aggregate tonnage of 60,000 seemed sufficient
to conquer the world. Motley.
3. A duty or impost on vessels, estimated per ton, or, a duty, toll,
or rate payable on goods per ton transported on canals .
4. The whole amount of shipping estimated by tons; as, the tonnage of
the United States. See Ton.
Note: There are in common use the following terms relating to
tonnage: (a) Displacement. (b) Register tonnage, gross and net. (c)
Freight tonnage. (d) Builders' measurement. (e) Yacht measurement.
The first is mainly used for war vessels, where the total weight is
likely to be nearly constant. The second is the most important, being
that used for commercial purposes. The third and fourth are different
rules for ascertaining the actual burden-carrying power of a vessel,
and the fifth is for the proper classification of pleasure craft.
Gross tonnage expresses the total cubical interior of a vessel; net
tonnage, the cubical space actually available for freight-carrying
purposes. Rules for ascertaining these measurements are established
by law.
Source: Webster’s Unabridged Dictionary 1913 Edition