Because of the different methods of classification, the same of the ship may have different appellation. Most ships are classified according to the purpose of the ship name according to different purposes of, can be divided into: passenger and cargo ships; General cargo ships; Container vessel, ro-ro, barge; Bulk grain ship, coal, carrier; Carrier (ore/oil tanker, the ore/bulk carrier/oil tanker) special cargo ship (lumber, reefer, car carrier, etc.), oil tanker, liquefied gas carrier liquid chemical tanker, etc.

Passenger and cargo ship: in addition to carrying passengers, also carrying some goods (below the water line as far as possible to the loading) cabin passenger and cargo ship on demand the same as the passenger ship.

General cargo ship, commonly known as for general cargo ship. Groceries, also known as gradeless and uniformly priced goods, machinery and equipment, building materials, daily provisions and other items. Special transport package bundles, into packages, crates of general cargo ship, is called the general cargo ship or common carrier. General cargo ship has the following features:

Weight can't be great, ocean general cargo ship a total capacity of 10000 tons - 14000 tons; The general cargo ship JinYang total capacity of 5000 tons; General cargo ship off the coast of a total capacity of 3000 tons the following (slow speed will increase due to many, the lack of supply of goods, loading and unloading, port time is long, the general cargo ship capacity in the economy)

In order to tally is convenient, general cargo ship is equipped with 2-3 decks in general. The weight for each general cargo ship, there are five or six cargo hold. After most of the location in the engine room in the model, also some use its tail.

General cargo ship are equipped with the first floor, the upper part of the engine room is equipped with the bridge. Vintage 5000 - ton cargo ship, we adopt three island.

Many - general cargo ship, due to the requirements of the ballast, temporary have deep tank, at the same time, deep tank liquid can be used to load the goods (animal and plant oil, molasses, etc.)

General cargo ship are generally installed with cargo equipment, most with derrick is given priority to, also some equipped with hydraulic rotary crane.

Most general cargo ship, each hold a hatch, but a few general cargo ship, according to the need of loading and unloading of goods, with double row of hatch.

The general cargo ship is commonly low powered. High speed is very uneconomical for general cargo ship ocean cargo ship section about 14 to 18 section, endurance is 12000 nautical miles above; JinYang general cargo ship speed of the section is about 13 to 15 section; Coastal general cargo ship speed section of about 11 to 13.

General cargo ship are generally a host, single screw.

Container ships, container ships, special transport container cargo ships. Can be divided into three types: full container ship date is a specialized shipping container ship, not the other types of goods; Half a container ship dates in the central area of the ship as a special cargo container, and the ends of the ship hold other groceries. Can transform the container ship date is a multipurpose ship. The ship's cargo hold, can change at any time according to need. As well as the loading container, can also be other general cargo shipment, in order to improve the utilization of the ship.

Ro-ro: cargo is not from the deck cargo hatch vertical hanging into hanging out, but by the open end of the first, tail, or the two sides of the ship and the springboard to the dock, with a trailer or fork lift handlebar container or wheeled chassis, along with the goods from the ship to port of a vessel. Ro-ro's main advantage is no need for cargo gear, at the port the goods do not need to reprint can tow directly to the place of receipt, to shorten the time of goods flow, reduce the damage.

Barge ships: also called lash: this is a kind of the barge as "floating containers" mother ship lift and rolling equipment is used to change the barge into the mother ship, or make use of the mother ship lifting equipment the barge (a ship) by the surface of the lift, and then into the mother in the hull of a ship, collectively known as lighter aboard ship. Many of the barge on the deck of ship carrying container ships. Typical of the barge ships is one of the following four:

Ordinary lighter aboard ship Also known as raschig type barge ship (LighterAboardShip referred to as "LA SH as full container ship, is also a kind of frame structure of a ship, cabin is equipped with many barge, each barge can carry 4 layer cell barge, 2 layer can be stowed on deck.

The bee lighter aboard ship Also known as the west than lighter aboard ship (See - BeCarrier characterized by no hatch, complete deck cabin is equipped with three layer, barge loading and unloading on the stern of the lifting of borehole set lift platform and vehicle horizontal scroll handling barges.

Catamaran lighter aboard ship Also known as barca relies on barge ships (BargAboardCatama - ran said Jane BA CA T the boat to the twin hull structure, the first closed and tail apart, relying on the lift platform and wheel loading and unloading on the deck barges.

Barge ships dock Also called type barco barge ships, in a mother ship sank to a certain depth, the barge floating dock ship way into being, and can be multi-layer loading of barges.

Bulk carriers, bulk transport of grain, coal, ore, salt, such as cement bulk dry bulk cargo ship, can be called dry bulk ships, or bulk carriers. Because of the dry bulk cargo single, don't need packing bundles, into packages, crates of load transportation, does not fear the extrusion, facilitate loading and unloading, so are single decker. Deadweight is generally not in more than 50000 tons of cargo gear. Due to the stowage factor of grain, coal and ore (every tons of cargo volume) of the difference is very big, the required the size of the cargo volume, hull structure, layout and equipment are different in many ways. On general habit, therefore, only the loading of the goods such as grain, coal of similar ship stowage factor, known as the bulk carrier, and load the stowage factor low ore, etc., as the ship, called ore carrier. Used in food, coal, ore and other bulk commodities ship is usually divided into several levels.

Deadweight DW for more than 100000 - ton, called capesize ships.

Deadweight DW for 60000 - ton, often referred to as panamax. This is a kind of the panama canal tolerated by the biggest ship type. The captain to less than 245 meters, the ship is not more than 32.2 meters wide, the largest permissible draft of 12.04 meters.

Deadweight DW is 35000 t - 35000 - ton, referred to as a portable bulk carrier. Draft a shallow, basic to ports in the world.

Deadweight DW is 20000 t - 20000 - ton, called small bulk carrier. Can drive the biggest ship form the five big lakes. Biggest captain no more than 222.5 meters, the ship is less than 23.1 meters wide, maximum draught is less than 7.925 meters. Used to transport ore ship, due to the load, the greater the transportation of interest is lower, at present, the ore carrier minimum total capacity of 57000 tons; The biggest for 260000 tons; Most of 12000 tons - 150000 tons. Because of ship form, the height of the climax of cargo gear on shore is often high enough. As a result, the ore carrier at the time of loading and unloading of goods, use how much ballast water to adjust the ship's draft.

Oil: in a broad sense refers to various oil ship bulk transport. In addition to the oil transportation, ship oil waste oil, all kinds of animal and plant oil, liquid natural gas and liquefied petroleum gas (LPG), etc. But usually, tanker ship most is refers to the transportation of crude oil. And shipment of waste oil ship, called waste oil tanker. Ship loading liquid natural gas and liquefied petroleum gas (LPG), known as liquefied gas carrier. The greater the deadweight of the tanker, the lower the transportation interest. Due to the oil supply of goods fully, loading and unloading speed is quick, so oil tanker can build heavily. Offshore oil tanker of the total capacity of 30000 tons; JinYang tanker total capacity of 60000 tons; Large ocean tankers total capacity of 200000 tons; Super tanker total capacity of 300000 tons. The largest tanker has reached 560000 tons. Oil tanker is a single deck, single bottom structure. Because after the cargo within the scope of the damage, cargo oil floating on the surface of the water, not hold a large amount of water, so in addition to the engine room area set up double bottom tanker, cargo oil tank area is generally not set the double bottom. But oil tankers Marine accident will cause pollution, in recent years, some large oil tankers, set up double bottom or double hulls.

Liquefied gas carrier: special bulk transport ship liquid petroleum gas and natural gas. Also some people called special tanker. According to the transportation of liquefied gas temperature and pressure, is divided into three types:

Pressure liquefied gas carrier: this kind of liquefied gas carrier, apply to offshore short-distance transport a small amount of liquefied gas. Under normal temperature, the gas pressure to the liquid pressure, the liquid gas storage in high pressure vessel transport. This kind of mode of transportation, hull structure and the operation technology is simple, but the container weight, low capacity utilization of the vessel, is not suitable for building large high pressure vessel.

Cryogenic pressure type of liquefied gas carrier, the temperature control of liquefied gas under normal temperature 45 ℃, but higher than the boiling point of liquefied gas, such as temperature range, the gas pressure to the liquid for transport. In this way the transport for liquefied gas will apply not only to control the temperature and pressure, chamber to heat insulation, and set up the freezer.

Low temperature type of liquefied gas carrier, atmospheric pressure, the gas cooled below the temperature of the liquid transportation. The ship is equipped with temperature and pressure control device. Applicable to a large number of transport liquefied gas, at present this type of liquefied gas carrier.

Carrier: either loading of crude oil, also can load the bulk or ore carrier or three boats. Bulk carrier, oil tanker and ore carrier special ship, although the capacity is big, but due to the types of cargo transportation by a single, fly can't other types of goods, shipment to ballast ballast. Carrier is according to the kind of change, the ship in the round trip, can carry different kinds of goods. Carrier mainly has the following two types:

Ore/oil ship dates used to transport ore and crude oil. (referred to as 00 ship oroil this narrow boat in the middle of the cargo hold, accounted for 40% of the whole ship cargo ship for a 50%. Transport ore fashion cargo tanks in the middle, and transportation of crude oil, put in the middle of the two side tank and hold.

Mineral oil/powder/three ship dates used to transport ore, lighter bulk and crude oil. Referred to as O.B.O