Are very large and ultra large cargo vessels with capacity over 150,000 DWT. They are categorised under VLCC,ULCC, VLOC and ULOC and can be as large as 400,000 DWT or even more. They serve regions with deepwater terminals.
Are also very large bulk carrier which can't be longer than 360m (1,180 ft), wider than 65 m (213 ft) and her draft can't be more than 24 m (79 ft). The deadweight tonnage of these vessels is 380,000–400,000 DWT.
Ship's maximum measurements are defined by the Chinamax standars, allowing ports to determine whether they can accommodate ships in this class. As the name suggests, these ships are often used to move cargo to and from China along several trade routes.
Handymax, are small-sized cargo ships with size less than 60,000 DWT.
Supramax are vessels having capacity between 50,000 to 60,000 DWT. Due to their small size, they are capable of operating in regions with small ports with length and draught restrictions. therefore forming the majority of ocean going cargo vessels in the world.
Handysize are small-sized ships with capacity ranging between 15,000 and 35,000 DWT. These vessels are ideal for small as well as large ports, and so make up the majority of ocean cargo vessels in the world. They are mainly used in transporting finished petroleum products and for bulk cargo
VLCC and ULCC
VLCC stands for Very Large Crude Carriers. Their size ranging between 180,000 to 320,000 DWT. They are very flexible in using terminals and can also operate in ports with depth limitations. VLCC's are used extensively around the North Sea, Mediterranean and West Africa.
ULCC or Ultra Large Crude Carriers are the largest shipping vessels in the world with a size more than 320,000 DWT. Called Super Tankers, ULCC's are used for long-haul oil crude transportation from Middle East to Europe, Asia, and North America.