Container ship cargo ocean

The cargo ship is the backbone of global trade, carrying standardized containers across oceans and connecting continents.

About this subject

Container ships are the workhorses of global commerce, moving roughly 90% of the world's trade by volume. These colossal vessels, which can exceed 400 meters in length (like the Maersk Triple E class), operate on fixed routes between the largest ports: Shanghai, Singapore, Rotterdam, and Santos. The standardization of 20- and 40-foot containers revolutionized logistics, allowing seamless transfer between ships, trains, and trucks.

A ship's capacity is measured in TEUs (twenty-foot equivalent units). The largest current vessels, such as the MSC Irina or Evergreen A class, carry over 24,000 TEUs. To accommodate such size, they require deep drafts and port infrastructure with massive gantry cranes and dredged channels. The tilt-shift effect in the image creates a miniature illusion, but these are engineering behemoths: a single ship can haul up to 200,000 tonnes of cargo, equivalent to thousands of trucks.

The industry faces major environmental hurdles. Burning heavy fuel oil releases sulfur oxides, nitrogen oxides, and CO2. The International Maritime Organization has set emission reduction targets, pushing for liquefied natural gas, slow steaming, and energy-efficient designs. The 2021 Ever Given grounding in the Suez Canal showed the fragility of global supply chains: one stranded ship halted billions in trade for days.

Beyond deep-sea giants, coastal feeder vessels serve regional trade, like in Brazil where cabotage is vital for exporting soy from the Midwest through Santos and Paranaguá. Digitalization, with optimized routing, satellite tracking, and automated systems, makes shipping safer and more predictable than ever.

Frequently Asked Questions

How long does a cargo ship take to cross the Atlantic Ocean?

Depending on the route and speed, a container ship sailing from Santos to Rotterdam takes about 12 to 15 days, averaging 20 to 25 knots (37 to 46 km/h).

What is the largest container ship in the world today?

As of 2024, the largest is the MSC Irina, with a capacity of 24,346 TEUs, followed by the Ever Alot (24,004 TEUs). They measure over 400 meters in length and 60 meters in width.

How does container logistics work to get goods to the final destination?

Containers are loaded at the origin port, shipped to a hub port, then transferred to feeder vessels, trains, or trucks. Tracking using systems like ISO 6346 allows real-time monitoring of each unit.