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发表于 2021-11-25 07:47:48 | 显示全部楼层 |阅读模式
Seagoing Bulk Carriers: Use and General Use

There were many dangers involved when operating seagoing bulk vessels. You should plan well and exercise caution in dealing with any shipboard issue. This site provides an easy reference for the international shipping professionals with guidelines and information on the discharge and loading of different bulk cargo types and is to stay within the limits as specified by the classification society. It is crucial to ensure that the structure of the ship is not stressed and that all safety precautions are in place in order to ensure the safety of passage at sea. There are pages with details that cover various topics concerning bulk carriers. They are helpful for both those aboard and those on the shore in the terminal.

General characteristics of seagoing bulk carriers
Bulk carriers come with a single deck and include top-side tanks as well as the hopper tank. They are able to carry bulk cargo that is a single commodity. Solid bulk cargo is any material other that gas or liquid, which is a combination or larger pieces of material, usually uniformly composed, and loaded directly into ships' cargo spaces. Dry cargo includes sugar, bulk grains, and even ore. Bulk carriers can be defined as any ship that is designed to carry liquid or solid cargo in bulk. Tankers are also included. However, in normal usage it is used to describe vessels built to transport bulky solid cargoes, which is typically grain and agricultural products similar to it, and mineral products like coal, ore, stone and so on., on one or more voyage legs.   Click over to this dry bulk shipping info for more.

  

What Is A Bulk Carrier ?General Features Of Bulk Carriers Are:

"A ship which is intended primarily to carry dry cargo in bulk, including such types as ore carriers and combination carriers"

The carrying weights vary from 3,000 tonnes to 300,000.
Averaging speed between 12 and 15 knots
-Single deck ships, ie no tweendecks
Carriers of small to medium sizes (carrying up to up to 40,000 tonnes) typically have cargo handling gear. Larger vessels do not, however, have facilities on shore for loading and unloading.
Cargo storage is usually large and without any obstructions. There are bigger hatch sizes to allow cargoes to be easily loaded and unloaded.
A single cargo hold is generally classified as a ballast storage. This can be used for ballast voyages to improve stability. In case of ballasting partially the voyage, two or three additional holds might be allowed, however they only at port.
They can be covered by single pull or hydraulic, or stacking (piggyback) style steel hatch covers
Four types of ballast tanks
Sloping topside wing tanks
Sloping bottom side wing tank
Double bottom tanks
Peak and post peak water tank.

Solid bulk cargo? Anything that isn't liquids and gases, made up of granules or particles or larger chunks of material. These materials can be placed directly into cargo containers without the need for any other type of confinement. There are a variety of cargoes that are carried by bulk carriers. These include food items and minerals that can react with one another as well as with water sources. For loading the cargo, it is important to wash the area thoroughly. A surveyor may be needed to ensure that the space is ready to load. To prevent contamination, it is essential that all traces of previous cargoes are removed. Water is the most significant cause of damage to bulk cargoes. This is why it is crucial that storage areas are dry in order to be able to accept cargo. The covers for hatches should be watertight in order to stop water from entering. All fittings in the storage area (ladders and pipes guards, bilge covers, etc.) are to be checked. It is crucial to examine all fittings in the cargo hold (ladders and pipe guards etc.) and ensure that they are installed correctly. The equipment could cause severe damages and delay to conveyor belts. Unintentionally discharged cargo can result in the ship being found to be responsible. Peruse this dry cargo vessel site for more.

  

Bulk Carrier, Bulker A vessel that is designed to transport dry cargo that is loaded into the vessel, with no container other than that of the vessel's boundaries, as distinguished from the bulk carrier that is liquid or tanker. Conventional bulk carriers have a single deck with single skin, double-bottom, hopper side and topside tanks. Bulk carriers are able to carry any type of bulk cargo including heavy ore and light grains up to the maximum weight. It isn't as easy or simple as you imagine.

Gearless Bulk Carrier
A lot of bulk cargoes have hazardous properties and may change their properties during transit. Unintentional loading can cause damage to the ship, e.g. It is possible for a ship to bow if not loaded properly. This is known as "stress?" could lead to dangerous consequences on the sea, particularly in severe weather. Also, residues from previous cargoes might have a serious impact on the future cargoes. Certain bulk cargoes could be affected by water damage, e.g. cement power. It is hard to determine the cargoes that are loaded or discharged. These issues have serious consequences on the operation of bulk cargoes. Discharging bulk cargo using? Bulk cargoes possess the tendency of forming a cone once they are loaded when conveyor belts and similar systems are not closely monitored and controlled. The angle that this cone develops is known as the angle or repose'. It varies for each cargo. Iron ore cargoes, however, form a steeply-angled cone. The cargoes that are flow free will form shallower cones. Low angles of repose could result in cargo shifting in transit. When the cargo is nearing completion, bulldozers might be necessary to spread the load in the holds. Dry-bulk carriers generally have to use facilities at shore to load cargo and discharge it. But certain bulk carriers come with self unloading features including conveyors under cargo holds or cranes that go up deck.
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