Given the magnitude of world trade and the high volume of exchanges between countries, there is a way to control all containers of goods moving around the world: ISO codes. They are used in multimodal container transport, which mainly involves sea, rail or road transport. Above all, this standardised system is essential for international shipping, where companies and ports in different countries must work in a coordinated manner, especially in large ports that handle thousands of containers daily.

At each stage, logistics operators, such as Stock Logistic, use these codes to verify the identity of the container, control its contents and record its position. A tool to ensure the efficiency, traceability and security of the shipment.

Characteristics and composition of the ISO code

To facilitate the recognition and enforcement of this code, there are a number of defining characteristics:

Unique identification: each container has a unique ISO code that identifies the owner, the type of container and an individual serial number. This reduces handling errors and avoids problems of duplication.

Standard structure: the structure of the ISO code is consistent and consists of letters and numbers arranged in a specific format.

International standard: ISO 6346 ensures that this system is recognised and used globally. It facilitates the exchange of information between companies and authorities in different countries.

This sequence is composed of four letters or digits. The first element of the sequence is about the length of the container, with the most common codes being 2 (20-foot container) and 4 (40-foot container). The second element is about its height, with 2 (standard height of 8 feet 6 inches) and 5 (high cube container of 9 feet 6 inches) predominant. The third and fourth relate to the type of container.

• G1: general container with passive vents at the top of the cargo space.
• R1: refrigerated and mechanically heated container.
• U1: open top container with removable top members on end frames.
• P1: platform container with two full fixed ends.
• T1: tank container for non-hazardous liquids.

Stock Logistic, experts in international transport

Maritime transport is one of the main bases of international trade, which is why Stock Logistic, an integrated logistics operator, has a division specialised in this type of transport. For the company, the good use of the ISO code is key to guarantee the precise traceability of each container.

Stock Logistic also has extensive connections with the world’s leading shipping lines, which allows it to offer its customers flexibility in shipments, regular departures and FCL (Full Container Load) and LCL (Less than Container Load) freight options. Its extensive experience and qualified professionals make the company a perfect partner for any logistics operation.