Bulker's types

Bulker's types

Bulker's types
Bulk carriers are designed to transport various bulk cargo, such as ore, coal, fertilizers, building materials or grain, as well as any cargo that can simply be filled into the holds without packaging, or in bulk. There are highly specialized vessels - ore carriers, cement carriers, coal carriers, grain carriers, timber carriers and universal ones that carry any bulk cargo.

By deadweight bulk carriers classification:
Mini-bulk carriers with a deadweight of up to 10,000 tons are designed mainly for coastal shipping.

Seawaymax refers to vessels whose maximum size allows come through the St. Lawrence seaway (the name of the a system of locks, canals, and channels from Montreal to Erie lake, including the Welland canal and the Great lakes waterway) from the Atlantic ocean to the Great Lakes in North America. The maximum dimensions of vessels are smaller: length-225.6 m (740 ft), width — 23.8 m (78 ft.), draught — 7.9 m (26 ft.). In addition to restrictions on locks, there are separate sections on channels with limiting draught of 12.5 m, 10.7 m, 11.3 m and 8.2 m.

Handysize and Handymax ("handy" - convenient) are traditionally the most common vessels for transporting dry bulk cargo, having a deadweight of up to 60,000 tons. Handymax vessels are usually 150-200 m long. The main feature of Handymax bulk carriers is their own cranes with an average load capacity of 30 tons, which allows them to carry out cargo operations cheaper and in ports where there are no cargo facilities for loading/unloading bulk carriers. Also it allows roadside transshipment.

Panamax - bulk carriers are named so because of the size restrictions of vessels passing through the Panama canal: width up to 32.31 m, length up to 294.13 m, draught up to 12.04 m in fresh tropical water, height — 57.91 m. The average deadweight of these vessels is 65,000 tons. They mainly transport coal and grain.

Capesize (from the English. "cape" - a headland or promontory) - vessels that due to their large size can not pass through the Panama or Suez channels and are forced to navigate the Cape Horn of South America or the Cape of Good Hope in southern Africa. Usually they have a deadweight of more than 150 thousand tons. There are ore carriers with a deadweight of up to 400 thousand tons. Such vessels are highly specialized: 93% of their cargo is coal and ore. These vessels serve deep-water terminals.

Vessel’s dimensions are the most important initial data for the proper selection of port handling equipment. LLC (level-luffing crane) or continuous ship loader parameters are depending on which vessels are processed or will be processed at the terminal.
Also, the dimensions of the bulk carriers and the coaming’s (that cover the holds) design holds affect the design version of the dome shelter "MANTIA", designed to protect the cargo placed in the hold of the vessel from rain and snow, as well as protect the water area from dust that occurs during loading.
For the convenience of filling in the questionnaires, the table below shows a table with the main dimensions of bulk carriers for coal transportation. Vessels for transportation of mineral fertilizers or grain will have close values of all the dimensions. There will be significant deviations in specialized vessels - ore carriers due to the high bulk density of the cargo.