(redirected from Deadweight tonnage)
Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia.
Related to Deadweight tonnage: Net Tonnage
See: cargo

TONNAGE, mar. law. The capacity of a ship or vessel.
     2. The act of congress of March 2, 1799, s. 64, 1 Story's L. U. S. 630, directs that to ascertain the tonnage of any ship or vessel, the surveyor, &c. shall, if the said ship or vessel be double decked, take the length thereof from the forepart of the main stem, to the afterpart of the stern post, above the upper deck, the breadth thereof, at the broadest part above the mainwales, half of which breadth shall be accounted the depth of such vessel, and then deduct from the length three-fifths of the breadth, multiply the remainder by the breadth and the product of the depth, and shall divide this last product by ninety-five, the quotients whereof shall be deemed the true contents or tonnage of such ship or vessel. And if such ship or vessel shall be single decked, the said, surveyor shall take the length and breadth as above directed, in respect to a double deck ship or vessel, and shall deduct from the length three-fifths of the breadth, and taking the depth from the underside of the deck plank to the ceiling of the hold, shall multiply and divide as aforesaid, and the quotient shall be deemed the tonnage of such ship or vessel.
     3. The duties paid on the tonnage of a ship or vessel are also called tonnage.
     4. These duties are altogether abolished in relation. to American vessels by the act of May 31, 1830, s. 1, 4 Story's Laws U. S. 2216. And by the second section of the same act, all tonnage duties on foreign vessels are abolished, provided the president of the, United States shall be satisfied that the discriminating or countervailing duties of such foreign nation, so far as they operate to the disadvantage. of the United States, have been abolished.
     5. The constitution of the United States provides, art. 1, s. 10, n. 2, that no state shall, without the consent of congress, lay any duty on tonnage.

References in periodicals archive ?
United Ocean Services, LLC ("UOS"), the largest Jones Act coastwise shipping company by deadweight tonnage, and U.
The three grain carriers will be 95,000 deadweight tonnage (DWT) vessels: 237 meters (m) in length, 40m in width, and 12.
Table 12: Global Merchant Shipping Fleet (2005): Percentage Breakdown of Deadweight Tonnage (dwt) by Foreign and National Flag by Ship Type 10 Ownership Patterns of Major Shipping Countries 10 Ownership Patterns According to Major Ship Types 10
While the number of vessels has marginally risen since the period of the Report, deadweight tonnage has plummeted by 64% over the two years of Labor s failed changes to domestic shipping arrangements.
Conventionally medium-speed diesel engines have often been used as the main engines of 5,000 to 20,000 deadweight tonnage class bulk carriers.
Currently around 10 percent of the ice class order book is above 60,000 deadweight tonnage, with the majority of investments made by owners in Germany, China, South Korea and Norway.
They are being designed to provide the optimal power and speed for a wide variety of ship types, such as small handysize bulk carriers of less than 30,000 deadweight tonnage (DWT), product tankers, general cargo vessels, reefers, feeder container ships, and small LPG carriers.
We predict that demand of the ships for civil use will reach 11 million tons in 2005; the production capacity of China's shipping industry will reach 9 million deadweight tonnage.
For example, with the increase in the Company's fleet deadweight tonnage, Trai Thien was able to increase the number of nautical trips by 180%, from ten trips during the three months ended September 30, 2009 to 28 trips during the three months ended September 30, 2010.