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In order to be registered, an ocean-going ship must be certified to be of a particular type and size and maintained to certain minimum standards. While most states (national governments) do not insist that ships be "classed," without a "class" category there would be considerable difficulties in operating a ship, as "class" is a requirement of most insurance companies and shippers using the vessel.
(shipping) An ocean-going crude oil tanker vessel of standard size between 80,000 and 119,000 dwt that is the largest crude oil tanker size in the AFRA (Average Freight Rate Assessment) tanker rate system.
(shipping) An ocean-going cargo vessel that is physically too large to fit through the locks of either the Panama or Suez Canals and therefore must voyage via Cape Horn at the southernmost tip of South America to get to or from the Atlantic and Pacific Oceans, or the Cape of Good Hope at the southernmost tip of South Africa to get to and from the Indian and Atlantic Oceans. Capesize vessels generally serve deepwater terminals handling raw materials, such as iron ore and coal.
(shipping) A small bulk or oil tanker vessel of 30,001 to 50,000 dwt that is a larger version of the popular Handysize vessel.
(shipping) A small bulk or oil tanker vessel that is suited to tie up at a T2 type pier. These vessels are a maximum of of 10,000 to 30,000 dwt. These vessels are more maneuverable and have shallower draft than larger vessels and therefore make up the majority of the world's ocean-going cargo fleet.
(shipping)An ocean-going cargo vessel of the maximum size possible to pass through the locks of the Panama Canal, which are 1000ft long by 110ft wide and 85ft deep. These vessels are typically of 50,000 to 80,000 dwt, 965ft (290m) in length; 106ft. (32.3m) beam; and 39.5ft (12.04m) draft.
(shipping) An ocean-going cargo vessel of the maximum size possible to pass through the locks of the Suez Canal in Egypt. This standard has evolved over time. Prior to 1967, a Suezmax was a maximum of 80,000 dwt. The canal was closed between 1967 and 1975 because of the Israel-Arab conflict. Upon reopening in 1975, after many modifications to the locks and canal itself, the maximum was increased to 150,000 dwt.
Ultra Large Crude Carrier (ULCC)
(shipping) An ocean-going crude oil tanker of 300,000 to 550,000 dwt. These are the largest vessels in the world and are used for carrying crude oil on long haul routes from the Arabian Gulf to Europe, America and the Far East, via the Cape of Good Hope. These vessels require custom built terminals for loading and discharge.
Very Large Crude Carrier (VLCC)
(shipping) An ocean-going crude oil tanker of 200,000 to 299,999 dwt. These vessels have greater flexibility than ULCCs due to their smaller size and are used extensively in the Mediterranean, West Africa and the North Sea. These vessels can sometimes be ballasted through the Suez Canal.
Ocean-going vessels are classified by the type of cargo they carry and their size expressed as dwt or deadweight tonnage. In some cases, a vessel is classified by its length and width. Since each classification society has slightly different standards, the size range for each vessel type may vary.
These vessels carry dry (grains, fertilizers, phophates and ores) or wet (chemicals, orange juice, refined petroleum products) bulk cargo.
Size: 10,000 - 30,000 dwt
These are small bulk carriers that make up the majority of the world's short haul fleet. Handysize can refer either to a bulk carrier or tanker.
Size: 30,001 - 50,000 dwt
These are a larger version of the Handysize vessels and popular for both bulk and crude carriers. These vessels have a large variation in size and characteristics.
This is the maximum size ship that can pass through the locks of the Panama Canal. Locks are 1000ft long by 110ft wide and 85ft deep. Panamax dimensions are: overall length (LOA) of 965ft (290m); beam of 106ft (32.3m); draft of 39.5ft (12.04m).
Size: 80,001 dwt - 199,000 dwt
These are vessels that are too large to pass through the locks of either the Panama or Suez Canals. As a result, these vessels must travel around the Cape of Good Hope in South Africa or Cape Horn in South America to their destinations. These vessels also require deep-water ports.
Very Large Ore Carriers (VL Ore Carriers)
Size: 200,000+ dwt
These vessels are the largest bulk carriers and also cannot pass through either the Panama or Suez canals.
These vessels carry refined petroleum products in numerous bulk tanks for safety and in order to carry a number of different products in a single voyage.
Tankers of less than 100,000 dwt are referred to as either "clean" or "dirty". Clean tankers carry refined petroleum products such as gasoline, kerosene, jet fuels, or chemicals. The so-called dirty vessels transport products such as heavy fuel oils or crude oil. Larger tankers usually only carry crude oil.
Size: 3,001 dwt - 10,000 dwt
These are the smallest tankers and are generally used in coastal waters requiring a shallow draft. Coastal tankers typically carry kerosene, heating oils, fuels and chemicals. /p>
Size: 10,001 dwt - 19,000 dwt
This is the next size up tanker and is still often used in coastal waters. These also typically carry kerosene, heating oils, fuels and chemicals.
Handy or Handysize
Size: 19,001 dwt - 25,000 dwt
Alternate: 10,000 - 34,999 dwt
This is a popular-sized tanker, but typically not used in very long voyages
Medium or Handymax
Size: 25,001 dwt - 45,000
Alternate: 35,000 - 49,999 dwt
This is a larger "Handy" sized vessel.
Large/Long Range One (LRI)
Size: 45,001 - 70,000 dwt
Alternate: 45,000 to 79,999
Large/Long Range Two (LRII)
Size: 70,001 - 100,000+ dwt
Alternate: 80,000 - 159,999
These vessels carry bulk crude oil in tanks.
Tankers of less than 100,000 dwt are referred to as either "clean" or "dirty". Clean tankers carry refined petroleum products such as gasoline, kerosene or jet fuels, or chemicals. The so-called dirty vessels transport products such as heavy fuel oils or crude oil. Larger tankers usually only carry crude oil.
Size: 50,001 - 80,000 dwt
Approximate 32.2m beam limitation
This is the maximum size ship that can pass through the locks of the Panama Canal. Locks are 1000ft long by 110ft wide and 85ft deep. Panamax dimensions are: overall length (LOA) of 965ft (290m); beam of 106ft (32.3m); draft of 39.5ft (12.04m).?
Size: 80,000 - 119,000 dwt
This is the largest crude oil tanker size in the AFRA (Average Freight Rate Assessment) tanker rate system.
Size: 120,000 dwt - 150,000 dwt
This is the maximum size crude oil ship that can pass through the Suez Canal in Egypt.
Very Large Crude Carrier (VLCC)
Size: 150,000 - 320,000 dwt
These are very large crude oil carriers that transport crude oil from the Gulf, West Africa, the North Sea and Prudhoe Bay to destinations in the United States, Mediterranean Europe and Asia. Although VLCCs are otherwise too large, it is possible to ballast these vessels through the Suez Canal.
Ultra Large Crude Carrier (ULCC)
Size: 321,000+ dwt
These are the largest man-made vessels that move. Currently, the largest ULCC is 564,939 dwt. These ships sail the longest routes, typically from the Gulf to Europe, the United States and Asia. They are so large that they require custom-built terminals for loading and unloading.