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 intermodal freight transport and now carry most seagoing non-bulk cargo.
Container ship capacity is measured in twenty-foot equivalent units (TEU). Typical loads are a mix of 20-foot (1-TEU) and 40-foot (2-TEU) ISO-standard containers, with the latter predominant.
The twenty-foot equivalent unit (abbreviated TEU or teu) is a general unit of cargo capacity, often used for container ships and container ports. It is based on the volume of a 20-foot-long (6.1 m) intermodal container, a standard-sized metal box that can be easily transferred between different modes of transportation, such as ships, trains, and trucks.
An entrepôt (English: /ˈɒntrəpoʊ/ ON-trə-poh; French: [ɑ̃tʁəpo] ) is a transshipment port, city, or trading post where merchandise may be imported, stored, or traded, usually to be exported again. Entrepôt also means 'warehouse' in modern French, and is derived from the Latin roots inter 'between' + positum 'position', literally 'that which is placed between'. Typically located on a crossroads, river, canal, or maritime trade route these trade hubs played a critical role in trade during the age of sail. Modern logistics, supply chain networks, and border controls have largely made entrepôts obsolete, or reduced them in number, but the term is still used to refer to duty-free ports or those with a high volume of re-export trade.
Railways, Container Ships, Air-Freight, and Telecommunications have created a world in which commodities and manufactured goods are shifted from one part of the globe to another in regular, controlled, and reliable streams; see Just-in-Time Manufacturing. Eliminating the factors which once made the entrepot phenomenon central to trade networks. But, as pointed out by the Dutch economist T.P. van der Kooy and has been more recently restated by P.W. Klein, before the Industrial Revolution the flow of goods from one part of the world to another, even one region of a country to another, was so irregular and unpredictable that there was no possibility of achieving any sort of steady distribution, any balancing of supply and demand, or any sort of price stability except by stockpiling great reserves of commodities in central storehouses; ie entrepots.
Containerization is a system of intermodal freight transport using intermodal containers (also called shipping containers, or ISO containers). Containerization, also referred as container stuffing or container loading, is the process of unitization of cargoes in exports. Containerization is the predominant form of unitization of export cargoes today, as opposed to other systems such as the barge system or palletization. The containers have standardized dimensions. They can be loaded and unloaded, stacked, transported efficiently over long distances, and transferred from one mode of transport to another—container ships, rail transport flatcars, and semi-trailer trucks—without being opened. The handling system is mechanized so that all handling is done with cranes and special forklift trucks. All containers are numbered and tracked using computerized systems.
Containerization originated several centuries ago but was not well developed or widely applied until after World War II, when it dramatically reduced the costs of transport, supported the post-war boom in international trade, and was a major element in globalization. Containerization eliminated manual sorting of most shipments and the need for dock front warehouses, while displacing many thousands of dock workers who formerly simply handled break bulk cargo. Containerization reduced congestion in ports, significantly shortened shipping time, and reduced losses from damage and theft.
An intermodal container, often called a shipping container, or a freight container, (or simply "container") is a large metal crate designed and built for intermodal freight transport, meaning these containers can be used across different modes of transport – such as from ships to trains to trucks – without unloading and reloading their cargo. Intermodal containers are primarily used to store and transport materials and products efficiently and securely in the global containerized intermodal freight transport system, but smaller numbers are in regional use as well. It is like a boxcar that does not have wheels. Based on size alone, up to 95% of intermodal containers comply with ISO standards, and can officially be called ISO containers. These containers are known by many names: cargo container, sea container, ocean container, container van or sea van, sea can or C can, or MILVAN, or SEAVAN. The term CONEX (Box) is a technically incorrect carry-over usage of the name of an important predecessor of the ISO containers: the much smaller steel CONEX boxes used by the U.S. Army.
Intermodal containers exist in many types and standardized sizes, but 90 percent of the global container fleet are "dry freight" or "general purpose" containers: durable closed rectangular boxes, made of rust-retardant weathering steel; almost all 8 feet (2.4 m) wide, and of either 20 or 40 feet (6.1 or 12.2 m) standard length, as defined by International Organization for Standardization (ISO) standard 668:2020. The worldwide standard heights are 8 feet 6 inches (2.6 m) and 9 feet 6 inches (2.9 m) – the latter are known as High Cube or Hi-Cube (HC or HQ) containers. Depending on the source, these containers may be termed TEUs (twenty-foot equivalent units), reflecting the 20- or 40-foot dimensions.
A watercraft or waterborne vessel is any vehicle designed for travel across or through water bodies, such as a boat, ship, hovercraft, submersible or submarine.
This article lists the world's busiest container ports (ports with container terminals that specialize in handling goods transported in intermodal shipping containers), by total number of twenty-foot equivalent units (TEUs) transported through the port. The table lists volume in thousands of TEU per year. The vast majority of containers moved by large, ocean-faring container ships are 20-foot (1 TEU) and 40-foot (2 TEU) ISO-standard shipping containers, with 40-foot units outnumbering 20-foot units to such an extent that the actual number of containers moved is between 55%–60% of the number of TEUs counted.
The latest ranking reflected the figures for the year 2025, as published in the Lloyds List Top 100 and World Shipping Council (2025 figures), unless otherwise indicated.
Port Newark–Elizabeth Marine Terminal, a major component of the Port of New York and New Jersey, is the principal container ship facility for goods entering and leaving the New York metropolitan area and the northeastern quadrant of North America.
Located on Newark Bay, the facility is run by the Port Authority of New York and New Jersey. Its two components, Port Newark and the Elizabeth Marine Terminal (sometimes called Port Elizabeth) sit side by side within the cities of Newark and Elizabeth, New Jersey, just east of the New Jersey Turnpike and Newark Liberty International Airport.