A cargo ship or freighter is a merchant ship that carries
cargo
Cargo consists of bulk goods conveyed by water, air, or land. In economics, freight is cargo that is transported at a freight rate for commercial gain. ''Cargo'' was originally a shipload but now covers all types of freight, including tra ...
,
goods
In economics, goods are items that satisfy human wants
and provide utility, for example, to a consumer making a purchase of a satisfying product. A common distinction is made between goods which are transferable, and services, which are not ...
, and materials from one port to another. Thousands of cargo carriers ply the world's seas and oceans each year, handling the bulk of
international trade
International trade is the exchange of capital, goods, and services across international borders or territories because there is a need or want of goods or services. (see: World economy)
In most countries, such trade represents a significa ...
. Cargo ships are usually specially designed for the task, often being equipped with
cranes
Crane or cranes may refer to:
Common meanings
* Crane (bird), a large, long-necked bird
* Crane (machine), industrial machinery for lifting
** Crane (rail), a crane suited for use on railroads
People and fictional characters
* Crane (surname ...
and other mechanisms to load and unload, and come in all sizes. Today, they are almost always built of welded steel, and with some exceptions generally have a life expectancy of 25 to 30 years before being scrapped.
Definitions
![Namibia (2007)](https://upload.wikimedia.org/wikipedia/commons/6/67/Namibia_%282007%29.jpg)
The words ''cargo'' and ''freight'' have become interchangeable in casual usage. Technically, "cargo" refers to the goods carried aboard the ship for hire, while "freight" refers to the act of carrying of such cargo, but the terms have been used interchangeably for centuries.
Generally, the modern ocean shipping business is divided into two classes:
# Liner business: typically (but not exclusively) container vessels (wherein "general cargo" is carried in 20- or 40-foot containers), operating as "common carriers", calling at a regularly published schedule of ports. A common carrier refers to a regulated service where any member of the public may book cargo for shipment, according to long-established and internationally agreed rules.
# Tramp-tanker business: generally this is private business arranged between the shipper and receiver and facilitated by the vessel owners or operators, who offer their vessels for hire to carry bulk (dry or liquid) or break bulk (cargoes with individually handled pieces) to any suitable port(s) in the world, according to a specifically drawn contract, called a
charter party
A charterparty (sometimes charter-party) is a maritime contract between a shipowner and a "charterer" for the hire of either a ship for the carriage of passengers or cargo, or a yacht for pleasure purposes.
Charter party is a contract of carriag ...
.
Larger cargo ships are generally operated by
shipping line
A shipping line or shipping company is a company whose line of business is ownership and operation of ships.
Shipping companies provide a method of distinguishing ships by different kinds of cargo:
# Bulk cargo is a type of special cargo that i ...
s: companies that specialize in the handling of cargo in general. Smaller vessels, such as
coasters, are often owned by their operators.
Types
Cargo ships/freighters can be divided into eight groups, according to the type of cargo they carry. These groups are:
#
Feeder ship
Feeder vessels or feeder ships are medium-size freight ships. In general, a feeder designates a seagoing vessel with an average capacity of . Feeders collect shipping containers from different ports and transport them to central container terminals ...
# General cargo vessels
#
Container ship
A container ship (also called boxship or spelled containership) is a cargo ship that carries all of its load in truck-size intermodal containers, in a technique called containerization. Container ships are a common means of commercial intermoda ...
s
#
Tankers
# Dry
bulk carrier
A bulk carrier or bulker is a merchant ship specially designed to transport unpackaged bulk cargo — such as grains, coal, ore, steel coils, and cement — in its cargo holds. Since the first specialized bulk carrier was built in 1852, eco ...
s
#
Multi-purpose vessel
A multi-purpose vessel (MPV) is a seagoing ship that is built for the carriage of a wide range of cargoes. Examples of these cargoes are: wood, steel, building materials, rolls of paper and bulk cargo.
Multi-purpose vessels can be divided into ...
s
#
Reefer ship
A reefer ship is a refrigerated cargo ship typically used to transport perishable cargo, which require temperature-controlled handling, such as fruits, meat, vegetables, dairy products, and similar items.
Description
''Types of reefers:'' Re ...
s
#
Roll-on/roll-off
Roll-on/roll-off (RORO or ro-ro) ships are cargo ships designed to carry wheeled cargo, such as cars, motorcycles, trucks, semi-trailer trucks, buses, trailers, and railroad cars, that are driven on and off the ship on their own wheels or using ...
vessels.
Rough synopses of cargo ship types
# General cargo vessels carry packaged items like chemicals, foods, furniture, machinery, motor- and military vehicles, footwear, garments, etc.
#
Container ship
A container ship (also called boxship or spelled containership) is a cargo ship that carries all of its load in truck-size intermodal containers, in a technique called containerization. Container ships are a common means of commercial intermoda ...
s (sometimes spelled containerships) are cargo ships that carry all of their load in truck-size
intermodal container
An intermodal container, often called a shipping container, is a large standardized shipping container, designed and built for intermodal freight transport, meaning these containers can be used across different modes of transport – from sh ...
s, in a technique called
containerization
Containerization is a system of intermodal freight transport using intermodal containers (also called shipping containers and ISO containers). Containerization is also referred as "Container Stuffing" or "Container Loading", which is the p ...
. They are a common means of commercial
intermodal freight transport
Intermodal freight transport involves the transportation of freight in an intermodal container or vehicle, using multiple modes of transportation (e.g., rail, ship, aircraft, and truck), without any handling of the freight itself when changing ...
and now carry most seagoing non-bulk cargo. Container ship capacity is measured in
twenty-foot equivalent unit
The twenty-foot equivalent unit (abbreviated TEU or teu) is an inexact unit of cargo capacity, often used for container ships and container ports.Rowlett, 2004. It is based on the volume of a intermodal container, a standard-sized metal box whi ...
s (TEU).
#
Tankers carry petroleum products or other liquid cargo.
# Dry
bulk carrier
A bulk carrier or bulker is a merchant ship specially designed to transport unpackaged bulk cargo — such as grains, coal, ore, steel coils, and cement — in its cargo holds. Since the first specialized bulk carrier was built in 1852, eco ...
s carry coal, grain, ore and other similar products in loose form.
#
Multi-purpose vessel
A multi-purpose vessel (MPV) is a seagoing ship that is built for the carriage of a wide range of cargoes. Examples of these cargoes are: wood, steel, building materials, rolls of paper and bulk cargo.
Multi-purpose vessels can be divided into ...
s, as the name suggests, carry different classes of cargo – e.g. liquid and general cargo – at the same time.
# A Reefer,
Reefer ship
A reefer ship is a refrigerated cargo ship typically used to transport perishable cargo, which require temperature-controlled handling, such as fruits, meat, vegetables, dairy products, and similar items.
Description
''Types of reefers:'' Re ...
s (or Refrigerated) ship is specifically designed and used for shipping perishable commodities which require
temperature-controlled, mostly
fruit
In botany, a fruit is the seed-bearing structure in flowering plants that is formed from the ovary after flowering.
Fruits are the means by which flowering plants (also known as angiosperms) disseminate their seeds. Edible fruits in partic ...
s,
meat
Meat is animal flesh that is eaten as food. Humans have hunted, farmed, and scavenged animals for meat since prehistoric times. The establishment of settlements in the Neolithic Revolution allowed the domestication of animals such as chic ...
,
fish
Fish are Aquatic animal, aquatic, craniate, gill-bearing animals that lack Limb (anatomy), limbs with Digit (anatomy), digits. Included in this definition are the living hagfish, lampreys, and Chondrichthyes, cartilaginous and bony fish as we ...
,
vegetable
Vegetables are parts of plants that are consumed by humans or other animals as food. The original meaning is still commonly used and is applied to plants collectively to refer to all edible plant matter, including the edible flower, flowers, ...
s,
dairy product
Dairy products or milk products, also known as lacticinia, are food products made from (or containing) milk. The most common dairy animals are cow, water buffalo, nanny goat, and ewe. Dairy products include common grocery store food items i ...
s and other
foodstuffs.
# Roll-on/roll-off (RORO or ro-ro) ships are designed to carry wheeled cargo, such as cars, trucks, semi-trailer trucks, trailers, and railroad cars, that are driven on and off the ship on their own wheels.
Specialized cargo ship types
Specialized types of cargo vessels include
container ship
A container ship (also called boxship or spelled containership) is a cargo ship that carries all of its load in truck-size intermodal containers, in a technique called containerization. Container ships are a common means of commercial intermoda ...
s and
bulk carrier
A bulk carrier or bulker is a merchant ship specially designed to transport unpackaged bulk cargo — such as grains, coal, ore, steel coils, and cement — in its cargo holds. Since the first specialized bulk carrier was built in 1852, eco ...
s (technically tankers of all
sizes
Size in general is the magnitude or dimensions of a thing. More specifically, ''geometrical size'' (or ''spatial size'') can refer to linear dimensions (length, width, height, diameter, perimeter), area, or volume. Size can also be measu ...
are cargo ships, although they are routinely thought of as a separate category). Cargo ships fall into two further categories that reflect the services they offer to industry: liner and tramp services. Those on a fixed published schedule and fixed tariff rates are cargo liners. Tramp ships do not have fixed schedules. Users charter them to haul loads. Generally, the smaller shipping companies and private individuals operate tramp ships. Cargo liners run on fixed schedules published by the shipping companies. Each trip a liner takes is called a voyage. Liners mostly carry general cargo. However, some cargo liners may carry passengers also. A cargo liner that carries 12 or more passengers is called a combination or passenger-run-cargo line.
Size categories
Cargo ships are categorized partly by cargo capacity, partly by weight (
deadweight tonnage
Deadweight tonnage (also known as deadweight; abbreviated to DWT, D.W.T., d.w.t., or dwt) or tons deadweight (DWT) is a measure of how much weight a ship can carry. It is the sum of the weights of cargo, fuel, fresh water, ballast water, pro ...
DWT), and partly by dimensions. Maximum dimensions such as length and width (
beam) limit the canal locks a ship can fit in, water depth (
draft
Draft, The Draft, or Draught may refer to:
Watercraft dimensions
* Draft (hull), the distance from waterline to keel of a vessel
* Draft (sail), degree of curvature in a sail
* Air draft, distance from waterline to the highest point on a vesse ...
) is a limitation for canals, shallow straits or harbors and height is a limitation in order to pass under bridges. Common categories include:
* Dry cargo
** Small Handy size, carriers of 20,000–
**
Seawaymax
The term Seawaymax refers to vessels which are the maximum size that can fit through the canal locks of the St. Lawrence Seaway, linking the inland Great Lakes of North America with the Atlantic Ocean.
Seawaymax vessels are in length, wid ...
, the largest vessel that can traverse the
St Lawrence Seaway. These are vessels less than in length, wide, and have a draft less than and a height above the waterline no more than .
**
Handy size, carriers of 28,000–
**
Handymax
Handymax and Supramax are naval architecture terms for the larger bulk carriers in the Handysize class. Handysize class consists of Supramax (50,000 to 60,000 DWT), Handymax (40,000 to 50,000 DWT), and Handy (<40,000 DWT). The ships are used for ...
, carriers of 40,000–
**
Panamax
Panamax and New Panamax (or Neopanamax) are terms for the size limits for ships travelling through the Panama Canal. The limits and requirements are published by the Panama Canal Authority (ACP) in a publication titled "Vessel Requirements". ...
, the largest size that can traverse the original locks of the
Panama Canal
The Panama Canal ( es, Canal de Panamá, link=no) is an artificial waterway in Panama that connects the Atlantic Ocean with the Pacific Ocean and divides North and South America. The canal cuts across the Isthmus of Panama and is a condui ...
, a length, a width, and a draft as well as a height limit of . Limited to loaded, empty.
**
Neopanamax,
upgraded Panama locks with length, beam, draft,
**
Capesize
Capesize ships are the largest dry cargo ships with ball mark dimension: about 170,000 DWT (deadweight tonnage) capacity, 290 m long, 45 m beam (wide), 18m draught (under water depth). They are too large to transit the Suez Canal ( Suezmax lim ...
, vessels larger than Suezmax and Neopanamax, and must traverse
Cape Agulhas
Cape Agulhas (; pt, Cabo das Agulhas , "Cape of the Needles") is a rocky headland in Western Cape, South Africa.
It is the geographic southern tip of the African continent and the beginning of the dividing line between the Atlantic and Indian ...
and
Cape Horn
Cape Horn ( es, Cabo de Hornos, ) is the southernmost headland of the Tierra del Fuego archipelago of southern Chile, and is located on the small Hornos Island. Although not the most southerly point of South America (which are the Diego Ramí ...
to travel between oceans, dimension: about 170.000 DWT, 290 m long, 45 m beam (wide), 18m draught (under water depth).
**
Chinamax
Chinamax is a standard of ship measurements that allow conforming ships to use various harbours when fully laden, the maximum size of such a ship being draft, beam and length overall. An example of ships of this size is the ''Valemax'' bulk ...
, carriers of 380,000– up to draft, beam and length; these dimensions are limited by port infrastructure in China
* Wet cargo
**
Aframax
An Aframax vessel is an oil tanker with a deadweight between 80,000 and 120,000 metric tonnes. The term is based on the Average Freight Rate Assessment (AFRA), a tanker rate system created in 1954 by Shell Oil to standardize shipping contract t ...
, oil tankers between 75,000 and . This is the largest size defined by the average freight rate assessment (AFRA) scheme.
**
Q-Max
Q-Max is a type of ship, specifically a membrane type LNG carrier. In the name Q-Max, "Q" stands for Qatar and "Max" for the maximum size of ship able to dock at the Liquefied natural gas (LNG) terminals in Qatar. Ships of this type are the large ...
,
liquefied natural gas
Liquefied natural gas (LNG) is natural gas (predominantly methane, CH4, with some mixture of ethane, C2H6) that has been cooled down to liquid form for ease and safety of non-pressurized storage or transport. It takes up about 1/600th the vol ...
carrier for
Qatar
Qatar (, ; ar, قطر, Qaṭar ; local vernacular pronunciation: ), officially the State of Qatar,) is a country in Western Asia. It occupies the Qatar Peninsula on the northeastern coast of the Arabian Peninsula in the Middle East; it sh ...
exports. A ship of Q-Max size is long and measures wide and high, with a shallow draft of approximately .
[
]
**
Suezmax, typically ships of about , maximum dimensions are a beam of , a draft of as well as a height limit of can traverse the
Suez Canal
The Suez Canal ( arz, قَنَاةُ ٱلسُّوَيْسِ, ') is an artificial sea-level waterway in Egypt, connecting the Mediterranean Sea to the Red Sea through the Isthmus of Suez and dividing Africa and Asia. The long canal is a popula ...
**
VLCC
An oil tanker, also known as a petroleum tanker, is a ship designed for the bulk transport of oil or its products. There are two basic types of oil tankers: crude tankers and product tankers. Crude tankers move large quantities of unrefined cru ...
(Very Large Crude Carrier),
supertanker
An oil tanker, also known as a petroleum tanker, is a ship designed for the bulk transport of oil or its products. There are two basic types of oil tankers: crude tankers and product tankers. Crude tankers move large quantities of unrefined ...
s between 150,000 and .
***
Malaccamax
Malaccamax is a naval architecture term for the largest tonnage of ship capable of fitting through the Strait of Malacca. Bulk carriers and supertankers have been built to this tonnage, and the term is chosen for very large crude carriers (VLCC). ...
, ships with a draft less than that can traverse the
Strait of Malacca
The Strait of Malacca is a narrow stretch of water, 500 mi (800 km) long and from 40 to 155 mi (65–250 km) wide, between the Malay Peninsula (Peninsular Malaysia) to the northeast and the Indonesian island of Sumatra to the southwest, connec ...
, typically .
**
ULCC (Ultra Large Crude Carrier), enormous supertankers between 320,000 and
![Ship measurements comparison](https://upload.wikimedia.org/wikipedia/commons/f/f4/Ship_measurements_comparison.svg)
The
TI-class supertanker is an Ultra Large Crude Carrier, with a draft that is deeper than Suezmax, Malaccamax and Neopanamax. This causes Atlantic/Pacific routes to be very long, such as the long voyages south of Cape of Good Hope or south of Cape Horn to transit between Atlantic and Pacific oceans.
Lake freighter
Lake freighters, or lakers, are bulk carrier vessels that operate on the Great Lakes of North America. These vessels are traditionally called boats, although classified as ships.
Since the late 19th century, lakers have carried bulk cargoes of ma ...
s built for the
Great Lakes
The Great Lakes, also called the Great Lakes of North America, are a series of large interconnected freshwater lakes in the mid-east region of North America that connect to the Atlantic Ocean via the Saint Lawrence River. There are five lakes ...
in North America differ in design from sea water–going ships because of the difference in wave size and frequency in the lakes. A number of these ships are larger than Seawaymax and cannot leave the lakes and pass to the Atlantic Ocean, since they do not fit the locks on the
Saint Lawrence Seaway
The St. Lawrence Seaway (french: la Voie Maritime du Saint-Laurent) is a system of locks, canals, and channels in Canada and the United States that permits oceangoing vessels to travel from the Atlantic Ocean to the Great Lakes of North Ameri ...
.
History
![Ubena von Bremen Kiel2007 2](https://upload.wikimedia.org/wikipedia/commons/1/1c/Ubena_von_Bremen_Kiel2007_2.jpg)
The earliest records of waterborne activity mention the carriage of items for trade; the evidence of history and archaeology shows the practice to be widespread by the beginning of the 1st millennium BC, and as early as the 14th and 15th centuries BC small Mediterranean cargo ships like those of the 50 foot long (15–16 metre)
Uluburun ship were carrying 20 tons of exotic cargo; 11 tons of raw copper, jars, glass, ivory, gold, spices, and treasures from Canaan, Greece, Egypt, and Africa. The desire to operate trade routes over longer distances, and throughout more seasons of the year, motivated improvements in ship design during the
Middle Ages
In the history of Europe, the Middle Ages or medieval period lasted approximately from the late 5th to the late 15th centuries, similar to the post-classical period of global history. It began with the fall of the Western Roman Empire ...
.
Before the middle of the 19th century, the incidence of
piracy
Piracy is an act of robbery or criminal violence by ship or boat-borne attackers upon another ship or a coastal area, typically with the goal of stealing cargo and other valuable goods. Those who conduct acts of piracy are called pirates, v ...
resulted in most cargo ships being armed, sometimes quite heavily, as in the case of the
Manila galleon
fil, Galyon ng Maynila
, english_name = Manila Galleon
, duration = From 1565 to 1815 (250 years)
, venue = Between Manila and Acapulco
, location = New Spain ( Spanish Empir ...
s and
East Indiamen
East Indiaman was a general name for any sailing ship operating under charter or licence to any of the East India trading companies of the major European trading powers of the 17th through the 19th centuries. The term is used to refer to vesse ...
. They were also sometimes escorted by
warships
A warship or combatant ship is a naval ship that is built and primarily intended for naval warfare. Usually they belong to the armed forces of a state. As well as being armed, warships are designed to withstand damage and are usually faster an ...
.
Piracy
Piracy
Piracy is an act of robbery or criminal violence by ship or boat-borne attackers upon another ship or a coastal area, typically with the goal of stealing cargo and other valuable goods. Those who conduct acts of piracy are called pirates, v ...
is still quite common in some waters, particularly in the
Malacca Straits
The Strait of Malacca is a narrow stretch of water, 500 mi (800 km) long and from 40 to 155 mi (65–250 km) wide, between the Malay Peninsula (Peninsular Malaysia) to the northeast and the Indonesian island of Sumatra to the southwest, connec ...
, a narrow channel between
Indonesia
Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Gui ...
and
Singapore
Singapore (), officially the Republic of Singapore, is a sovereign island country and city-state in maritime Southeast Asia. It lies about one degree of latitude () north of the equator, off the southern tip of the Malay Peninsula, bor ...
/
Malaysia
Malaysia ( ; ) is a country in Southeast Asia. The federation, federal constitutional monarchy consists of States and federal territories of Malaysia, thirteen states and three federal territories, separated by the South China Sea into two r ...
, and cargo ships are still commonly targeted. In 2004, the governments of those three nations agreed to provide better protection for the ships passing through the Straits. The waters off
Somalia
Somalia, , Osmanya script: 𐒈𐒝𐒑𐒛𐒐𐒘𐒕𐒖; ar, الصومال, aṣ-Ṣūmāl officially the Federal Republic of SomaliaThe ''Federal Republic of Somalia'' is the country's name per Article 1 of thProvisional Constituti ...
and
Nigeria
Nigeria ( ), , ig, Naìjíríyà, yo, Nàìjíríà, pcm, Naijá , ff, Naajeeriya, kcg, Naijeriya officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf o ...
are also prone to piracy, while smaller vessels are also in danger along parts of the
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the sout ...
n,
Southeast Asia
Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical south-eastern region of Asia, consisting of the regions that are situated south of mainlan ...
n coasts and near the
Caribbean Sea
The Caribbean Sea ( es, Mar Caribe; french: Mer des Caraïbes; ht, Lanmè Karayib; jam, Kiaribiyan Sii; nl, Caraïbische Zee; pap, Laman Karibe) is a sea of the Atlantic Ocean in the tropics of the Western Hemisphere. It is bounded by Mexico ...
.
Vessel prefixes
A category designation appears before the vessel's name. A few examples of prefixes for naval ships are "USS" (United States Ship), "HMS" (Her/His Majesty's Ship), "HMCS" (Her/His Majesty's Canadian Ship) and "HTMS" (His Thai Majesty's Ship), while a few examples for prefixes for merchant ships are "RMS" (Royal Mail Ship, usually a passenger liner), "MV" (Motor Vessel, powered by
diesel
Diesel may refer to:
* Diesel engine, an internal combustion engine where ignition is caused by compression
* Diesel fuel, a liquid fuel used in diesel engines
* Diesel locomotive, a railway locomotive in which the prime mover is a diesel engin ...
), "MT" (Motor Tanker, powered vessel carrying liquids only) "FV" Fishing Vessel and "SS" (Screw Steamer, driven by propellers or screws, often understood to stand for
Steamship). "TS", sometimes found in first position before a merchant ship's prefix, denotes that it is a ''T''urbine ''S''teamer.
Famous cargo ships
Famous cargo ships include the Dynamics Logistics, partly based on a
British design,
Liberty ship
Liberty ships were a class of cargo ship built in the United States during World War II under the Emergency Shipbuilding Program. Though British in concept, the design was adopted by the United States for its simple, low-cost construction. Ma ...
. Liberty ship sections were
prefabricated
Prefabrication is the practice of assembling components of a structure in a factory or other manufacturing site, and transporting complete assemblies or sub-assemblies to the construction site where the structure is to be located. The term ...
in locations across the United States and then assembled by shipbuilders in an average of six weeks, with the record being just over four days. These ships allowed the
Allies
An alliance is a relationship among people, groups, or states that have joined together for mutual benefit or to achieve some common purpose, whether or not explicit agreement has been worked out among them. Members of an alliance are called ...
in
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing ...
to replace sunken cargo vessels at a rate greater than the
Kriegsmarine's
U-boat
U-boats were naval submarines operated by Germany, particularly in the First and Second World Wars. Although at times they were efficient fleet weapons against enemy naval warships, they were most effectively used in an economic warfare ro ...
s could sink them, and contributed significantly to the war effort, the delivery of supplies, and eventual victory over the
Axis
An axis (plural ''axes'') is an imaginary line around which an object rotates or is symmetrical. Axis may also refer to:
Mathematics
* Axis of rotation: see rotation around a fixed axis
* Axis (mathematics), a designator for a Cartesian-coordinat ...
powers. Liberty ships were followed by the faster
Victory ship
The Victory ship was a class of cargo ship produced in large numbers by North American shipyards during World War II to replace losses caused by German submarines. They were a more modern design compared to the earlier Liberty ship, were sli ...
s. Canada built
Park ships and
Fort ship
The Fort ships were a class of 198 cargo ships built in Canada during World War II for use by the United Kingdom under the Lend-Lease scheme. They all had names prefixed with "Fort" when built. The ships were in service between 1942 and 1985, ...
s to meet the demand for the Allies shipping. The
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the European mainland, continental mainland. It comprises England, Scotlan ...
built
Empire ship
An Empire ship is a merchant ship that was given a name beginning with "Empire" in the service of the Government of the United Kingdom during and after World War II. Most were used by the Ministry of War Transport (MoWT), which owned them and co ...
s and used US
Ocean ship
The Ocean ships were a class of sixty cargo ships built in the United States by Todd Shipyards Corporation during the Second World War for the British Ministry of War Transport under contracts let by the British Purchasing Commission. Eighteen w ...
s. After the war many of the ships were sold to private companies. The ''
Ever Given
''Ever Given'' () is one of the largest container ships in the world. The ship is owned by Shoei Kisen Kaisha (a ship-owning and leasing subsidiary of the large Japanese shipbuilding company Imabari Shipbuilding), and is time chartered and op ...
'' is a ship that was lodged into the Suez Canal from March 25 to 28, 2021, which caused a halt on maritime trade.
Pollution
Due to its low cost, most large cargo vessels are powered by
bunker fuel
Fuel oil is any of various fractions obtained from the distillation of petroleum (crude oil). Such oils include distillates (the lighter fractions) and residues (the heavier fractions). Fuel oils include heavy fuel oil, marine fuel oil (MFO), ...
also known as
Heavy Fuel Oil
Heavy Fuel Oil (HFO) is a category of fuel oils of a tar-like consistency. Also known as bunker fuel, or residual fuel oil, HFO is the result or remnant from the distillation and cracking process of petroleum. For this reason, HFO is contaminate ...
which contains higher sulphur levels than diesel.
This level of pollution is increasing: with bunker fuel consumption at 278 million tonnes per year in 2001, it is projected to be at 500 million tonnes per year in 2020. International standards to dramatically reduce sulphur content in marine fuels and nitrogen oxide emissions have been put in place. Among some of the solutions offered is changing over the fuel intake to clean diesel or marine gas oil, while in restricted waters and
cold ironing
Cold ironing,
Article: Cold-Iron the Ships by Capt. Pawanexh Kohli or shore connection, shore-to-ship power (SSP ...
the ship while it is in port. The process of removing sulphur from the fuel impacts the viscosity and lubricity of the marine gas oil though, which could cause damage in the engine fuel pump. The fuel viscosity can be raised by cooling the fuel down. If the various requirements are enforced, the
International Maritime Organization's marine fuel requirement will mean a 90% reduction in sulphur oxide emissions; whilst the
European Union
The European Union (EU) is a supranational political and economic union of member states that are located primarily in Europe. The union has a total area of and an estimated total population of about 447million. The EU has often been de ...
is planning stricter controls on emissions.
See also
*
Classification of European Inland Waterways
The Classification of European Inland Waterways is a set of standards for interoperability of large navigable waterways forming part of the Trans-European Inland Waterway network within Continental Europe and Russia. It was created by the Europea ...
—standards determining vessel sizes on rivers and canals of Europe
*
MARPOL 73/78
The International Convention for the Prevention of Pollution from Ships, 1973 as modified by the Protocol of 1978, or "MARPOL 73/78" is one of the most important international marine environmental conventions. MARPOL 73/78, MARPOL is an amalg ...
—related to pollution: "Amended Regulation 14 concerns mandatory fuel oil change over procedures for vessels entering or leaving SECA areas and FO sulphur limits."
*
Merchant Navy (United Kingdom)
The Merchant Navy is the maritime register of the United Kingdom and comprises the seagoing commercial interests of UK-registered ships and their crews. Merchant Navy vessels fly the Red Ensign and are regulated by the Maritime and Coastguard ...
*
Merchant vessel
*
Ship transport
Maritime transport (or ocean transport) and hydraulic effluvial transport, or more generally waterborne transport, is the transport of people ( passengers) or goods (cargo) via waterways. Freight transport by sea has been widely used throu ...
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United States Merchant Marine
United States Merchant Marines are United States civilian mariners and U.S. civilian and federally owned merchant vessels. Both the civilian mariners and the merchant vessels are managed by a combination of the government and private sectors, an ...
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External links
Vessel size groupsCargo ship: general structure and arrangement by picture
{{DEFAULTSORT:Cargo Ship
Maritime transport
Ship types