The maritime industry is the global network of businesses, workers, and infrastructure involved in moving goods and people by sea. It also includes shipbuilding, port operations, offshore energy, and the regulatory systems that keep all of it running. Roughly 80% of global trade by volume travels over water, making this one of the largest and most interconnected industries on Earth.
What the Maritime Industry Covers
The term “maritime industry” is broad, and that’s part of why people search for it. It doesn’t refer to a single business or activity. Instead, it spans several major sectors that depend on each other.
Commercial shipping is the backbone. This includes the vessels that carry oil, grain, consumer goods, and raw materials between countries. Port operations cover everything from the cranes and wharves that load cargo to the dredged channels that let large ships reach their berths. Shipbuilding and repair keeps the global fleet functional, with major yards concentrated in South Korea, China, and Japan. Offshore energy includes both traditional oil and gas platforms and the growing offshore wind sector, which relies on specialized maritime vessels for installation and maintenance. Maritime logistics connects all of it, coordinating the movement of cargo from a factory floor to a port terminal to a destination warehouse, often across multiple countries.
Types of Ships That Move Global Trade
Commercial vessels fall into a few broad categories, each designed for specific cargo. Container ships carry standardized metal boxes (the ones you see stacked on trucks and trains) and handle most manufactured goods. The largest can carry over 20,000 containers on a single voyage. Bulk carriers transport loose commodities like coal, iron ore, and grain in large open holds. Tankers move liquids, primarily crude oil and refined petroleum, but also liquefied natural gas (LNG), chemicals, and cooking oils.
Beyond these three workhorses, roll-on/roll-off ships carry vehicles and heavy equipment that drive directly on and off the vessel. Breakbulk ships handle oversized or irregularly shaped cargo that can’t fit in a container. Each type is built to a specific purpose, and the global fleet numbers tens of thousands of oceangoing vessels.
The Scale of Global Seaborne Trade
To understand why the maritime industry matters, look at the numbers. In 2024, maritime transport accounted for roughly 75% of EU imports and 74% of exports by weight. Even measured by value rather than volume, shipping carried over half of all EU import value and about 44% of export value. These figures hold broadly across most trading nations.
Global seaborne trade grew 2.2% in 2024, according to a UN Trade and Development review published in 2025. That growth is expected to slow to around 0.5% in 2025 before averaging about 2% annually through 2030. Trade disruptions, shifting supply chains, and geopolitical tensions all affect these numbers year to year, but the long-term trajectory has been upward for decades.
Port Infrastructure
Ports are where sea meets land, and their efficiency determines how quickly and cheaply goods reach consumers. Modern port infrastructure includes deep-water berths for large vessels, container terminals with automated cranes, fuel storage and bunkering facilities, and road and rail connections that link the port to inland markets. Dredged shipping channels, locks, and navigational aids keep traffic moving safely.
Increasingly, ports also rely on digital infrastructure. The International Maritime Organization has pushed the concept of e-Navigation, which integrates electronic data for everything from berth-to-berth navigation to cargo tracking. This digital layer helps reduce delays, improve safety, and lower the environmental footprint of port operations.
Who Works in the Maritime Industry
The maritime workforce is enormous and geographically concentrated. Southeast Asia alone employs millions: over 2 million maritime workers each in Indonesia and Vietnam, more than 1.8 million in the Philippines, and over a million in Thailand. South Asia adds another 6 million workers across all maritime subsectors. In Latin America, both Brazil and Mexico employ more than 1.6 million maritime workers each.
Jobs range from seafarers who crew cargo ships for months at a time to dockworkers, ship pilots, naval architects, marine engineers, port managers, and logistics coordinators on shore. The industry remains heavily male-dominated. Women make up just 1.2% of the global seafarer workforce, a figure the IMO has been actively trying to change, though progress has been slow.
Environmental Footprint and Regulation
Shipping is more fuel-efficient per ton of cargo than trucking or air freight, but the sheer volume of goods moved by sea adds up. International shipping produces about 2.3% of global human-caused CO2 emissions, a figure that has stayed relatively stable in recent years.
The International Maritime Organization, the UN body that regulates global shipping, has set aggressive targets to bring those emissions down. The initial strategy called for cutting CO2 emissions per unit of cargo carried by at least 40% by 2030 compared to 2008 levels, with a stretch goal of 70% by 2050. Total annual greenhouse gas emissions from international shipping are supposed to drop by at least 50% by 2050. The long-term aim is to phase out shipping emissions entirely within this century.
New ships are already subject to energy efficiency standards. Large containerships built today must be 30% to 50% more energy efficient than vessels built in 2014, depending on their size. These standards, known as the Energy Efficiency Design Index, have been tightened several times, with the most recent requirements taking effect in 2022 for many vessel types.
Autonomous Ships and New Technology
The maritime industry is moving, cautiously, toward automation. The IMO defines several degrees of autonomy for ships. At the lowest level, a vessel uses automated processes and decision-support tools, but human crew remain on board and ready to take control at any time. At higher levels, ships could operate remotely or fully autonomously, though no international regulations currently allow that for commercial voyages.
In 2021, the IMO completed a review of how its existing safety and legal treaties would apply to autonomous vessels. Since then, it has been developing a dedicated code for Maritime Autonomous Surface Ships (MASS). The current timeline calls for a non-mandatory code by mid-2026, an experience-building phase to test it in practice, and a mandatory code adopted by 2030 with entry into force in 2032. Cyber risk management is a central concern, since automated systems create new vulnerabilities that traditional ships didn’t face.
Beyond autonomy, the broader digital shift includes real-time cargo tracking using sensors and satellite connectivity, route optimization software that cuts fuel use, and electronic documentation that replaces the paper-heavy processes shipping has relied on for centuries.
Offshore Energy
The maritime industry’s connection to energy extends well beyond transporting oil and gas. Offshore platforms depend on a fleet of specialized vessels for drilling support, crew transport, pipeline installation, and emergency response, including oil spill containment. As countries invest in offshore wind farms, particularly in Europe and parts of East Asia, the maritime sector has adapted. Purpose-built installation vessels, cable-laying ships, and service craft now support turbine construction and maintenance in open water. This subsector carries higher financial risk than conventional shipping but also offers higher returns, reflecting the technical complexity and capital intensity of working far from shore.