|Mainly dedicated cargo ships carrying cargo. Most of its storage space for the heap of goods cargo. A lot of ship cargo ships, the size disparity, with a displacement from the hundreds of tons to hundreds of thousands of tons. |
Dry bulk carrier
Also known as bulk carrier, dedicated to transport coal, ore, grain, chemical fertilizer, cement, steel and other bulk materials. At present their number second only to oil tankers. Characterized, the control room and cabin layout in the rear cargo mouth wide; within the bottom and side edges of side panels connected to upward-sloping to facilitate centralized cargo to the cargo deck and the hatch under the two side are tilted at the top edge capsule in order to limit the movement of goods; have more ballast tanks for ballast voyage. Carriage of goods by different vessels can be divided into ore, coal ship, bulk grain ship, bulk cement vessels, wooden boats and other transportation.
Specialized ships carrying liquid cargo. Liquid cargo mainly oil, liquefied petroleum gas, fresh water and chemical liquid and so on. Where traffic is the biggest oil and its products. Carriage of goods by different vessels can be divided into crude oil, refined oil tankers, liquid chemicals, ships, liquefied gas ships.
Specifically for the transport of crude oil ship, referred to as tankers. As the huge shipments of crude oil, oil tanker load capacity can reach more than 50 million tons, the ship in the biggest of them. Structure in general as a single at the end, with the improvement of environmental requirements, the structure being double-hull, double bottom in the form of evolution. Superstructure at the stern. No big hatch on the deck with pump and pipe loading and unloading of crude oil. Equipped with heating facilities for crude oil at low temperature heating, to prevent them from freezing affect the loading and unloading. The draft super-large oil tankers up to 25 meters, are often unable to dock loading and unloading, but must be by means of underwater pipelines for loading and unloading of crude oil.
Special carrying diesel fuel, gasoline and other petroleum products of ships. Structure similar to crude oil ship, but a smaller tonnage. Have a high fire, explosion-proof requirements.
Also known as general cargo ships, general-purpose dry cargo vessel, or unification, is mainly used for loading the general packaging, bags, crates and barrels of pieces of miscellaneous goods. As the pieces of miscellaneous cargo volume smaller than the tonnage of general cargo ship bulk carriers and oil tankers to small. The cargo volume of a typical 1 to 2 million tons, usually double-deck, equipped with a sound unload equipment. Layered cargo and deck are more easy to separate the goods. The new multi-purpose cargo ship is usually type, both ordinary break-bulk cargo carriage can also carry bulk cargo, large cargo, refrigerated cargo and container.
Also known as box shipments, container vessels or container ships, is a specialized container ship carrying. All or most of the cabins used to load the containers, often on the deck or hatch cover can also be stacked containers. Container ship cargo mouth wide and long, cargo box size according to the requirements set normalized. Loading and unloading efficiency, greatly reducing the time to stop in Hong Kong. In order to obtain a better economy, its speed is generally higher than other cargo ships, up to 30 knots or more. Liquid chemical tanker the door for the transport of toxic, volatile, dangerous goods are liquid chemicals, such as methanol, sulfuric acid, benzene, and other ships. Cargo area are all double-shell structure, and to reduce the ship damaged goods when the danger of overflow. The cargo hold and the crew accommodation premises, drinking water, etc. with an empty cabin and cabin isolation. Cargo volume shipment of the goods according to their degree of risk is subject to certain restrictions.
Specialized transport liquefied gas ships. The transport of liquefied gases are liquefied petroleum gas, liquefied natural gas, ammonia, ethylene, chlorine and so on. The low boiling point of liquid cargo, mostly inflammable and explosive dangerous goods, and some are highly toxic and strong corrosive. Therefore, liquefied gas transport ship cargo complex, very expensive.
Liquefied gas transport ship according to liquefied gas storage is divided into three categories: pressure type, cold type and cooled. In the pressurized liquefied gas ships, the goods were loaded at room temperature on the ball type or cylinder-type pressure liquid tank. Cold type and gas-cooled liquid cargo ship the goods to control both temperature and pressure, requiring cargo tank insulation and cooling equipment.
Special carriage, such as fruits, vegetables, meat and fish such as refrigerated cargo ships be. Often located multi-deck cargo normally divided into several separate enclosed space. Ship with the power of the cooling device can be more hostile environment so that all the necessary goods, refrigerated cargo to maintain the proper temperature.
Specialized cargo barge carrying ships, also known as mother ship. Their mode of transport and container transport mode is similar, as can be seen as cargo barge to float on the surface of the water container. Their transport process is: first, the goods loaded on a unified specification square cargo barge (a boat), the cargo barge and then loaded onto a barge containing (mother ship), the barge will be arriving at the port cargo barge, it will unload cargo barge to the surface of the water, and then sent to their respective destinations by tugboats. Characteristics, which is not contained in the barge terminals and yards, loading and unloading efficiency, ease of the sea - river transport. However, due to high cost and freight forwarding of the distribution organization is complex, its development has also been limited. Ro-ro cargo loading and unloading the vehicle from top to bottom multi-purpose ships, initially known as rolling on the rolling ship. Will be equipped with container and other bulky cargo trailer and a pulley with pallet of goods as a cargo unit, direct access by the tractor or forklift truck for loading and unloading cargo. Usually at the stern with ro-ro cargo doors and a springboard, the vehicle can be a springboard, cargo doors and decks between the activities of the ramp or lifting platform, directly into the decks. Therefore, ro-ro ship or pier does not require the traditional unload equipment to obtain a high handling efficiency.