COSU container tracking (COSCO Shipping Lines)
Containers with the prefix COSU belong to COSCO Shipping Lines. Enter the full number, for example COSU1234560, to check that it is valid and open COSCO Shipping Lines's official tracking page.
COSU
Triplicate does not track containers itself: it checks the number and sends you to the shipping line's own tracking page, which shows the live status. Prefixes were checked against the BIC owner-code registry in September 2026; lines also use leased containers.
Other COSCO Shipping Lines prefixes
All container prefixes
How a container number works
A container number (ISO 6346) has 11 characters: a 3-letter owner code, an equipment category letter (U for freight containers), a 6-digit serial number and a check digit. The check digit catches most typing mistakes, so check it before you book or send documents.
How to track a shipment
Shipping lines let you track by container number, bill of lading number or booking number on their own websites. The container number is on the container doors, the packing list and the bill of lading; the bill of lading number is on the B/L your forwarder sends you.
If tracking shows nothing
Status usually appears once the empty container is picked up or the full one enters the terminal. If nothing shows, check the number for typos, make sure you are on the right line's site (leased containers can be on any line), try the bill of lading number, or ask your forwarder.
Common questions
Who owns COSU containers?
COSCO Shipping Lines. Its container owner codes are COSU, CBHU, CSNU, CCLU, CSLU, checked against the BIC container registry in September 2026.
How do I track a COSU container?
Enter the full container number above: Triplicate checks the check digit and opens COSCO Shipping Lines's tracking page, with the number filled in or ready to paste. You can also search there by bill of lading or booking number.
What does the U in MSCU mean?
The fourth letter is the equipment category: U means a freight container, J detachable freight container equipment and Z a trailer or chassis. The first three letters are the owner code, here MSC.
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