Shipping containers stacked port

Shipping containers stacked in a busy port, revealing details of metal structures and connections.

About this subject

Shipping containers are the backbone of global trade, moving about 90% of non-bulk cargo worldwide. Stacked in ports such as Santos, the largest in Latin America, or Singapore, the busiest in the world, these standardized containers (typically 20 or 40 feet) enable logistical efficiency. Each unit is made of corten steel, resistant to corrosion, and can hold up to 30 tons. Stacking systems, using gantry cranes and reach stackers, organize thousands of TEUs (twenty-foot equivalent units) in compact yards. The unique alphanumeric identification on each container, standardized by ISO, allows global tracking. Fun fact: the first modern container was created by American Malcom McLean in 1956, revolutionizing maritime transport. Today, ships like the MSC Gülsün carry over 23,000 TEUs, requiring ports with deep drafts and robust infrastructure. The macro close-up reveals details such as twist-lock locks, which secure containers to each other, and doors with rubber seals to protect cargo.

Frequently Asked Questions

What is the cargo capacity of a standard 20-foot container?

A 20-foot dry van container has a maximum payload of about 28 tons, with an internal volume of approximately 33 cubic meters.

How are containers secured to each other during stacking?

Twist-locks are used, locking devices that fit into container corners, ensuring stability and safety during transport and stacking.

Why are containers important for global trade?

Containers standardized cargo transport, reducing costs and handling time, and enabled the growth of international trade, being essential for globalization.