Cracking the Code Ever wondered about the jumble of letters and numbers on a shipping container? They aren't random; they tell the story of a global journey.
The Owner Prefix
The First Four Letters The first three letters identify the owner, while the fourth—usually 'U'—stands for "Unit," marking it as a standard freight container.
The Six-Digit Serial
The Container’s Identity The next six digits serve as a unique serial number assigned by the owner to track that specific box across the ocean.
The Check Digit
The Lone Number in the Box The final digit, often boxed, is a "Check Digit" used by computers to verify that the previous sequences were recorded accurately.
The Size and Type
Knowing the Dimensions The four-digit code below the serial number tells port authorities exactly how long, tall, and wide the container is at a glance.