Crowley container tracking

How to read a Crowley container number

CMCJ1060492 example only — not a real shipment

Container numbers follow ISO 6346, the international standard for freight-container identification: four letters, six serial digits, then one check digit. The first three letters are the owner code — registered with the BIC (Bureau International des Containers) — and the fourth letter is the equipment category (U for a standard freight container).

Take CMCJ1060492 as a Crowley-style example: CMCJ is the registered prefix (owner code CMC plus the category letter J), 106049 is the serial, and the final 2 is the check digit computed from the ten characters before it — tracking systems use it to catch typos before they search.

If your Crowley tracking isn’t working

1. 1 Check the number format first

   Container numbers are exactly four letters plus seven digits (like CMCJ1060492). A common slip is confusing the letter O with zero, or dropping the final check digit. Copy the number from the door of the container or your booking confirmation rather than retyping it.

2. 2 Make sure the number was issued by this carrier

   If your shipment was booked through a freight forwarder, the number on your paperwork may be the forwarder’s own reference, which Crowley’s system won’t recognise. Ask whoever issued your documents which carrier number to use — or paste the number on our homepage and we’ll work out who it belongs to.

3. 3 Too early or too late

   New shipments can take a little while to appear — most carriers only start returning results once the container is in their system after export gate-in or acceptance. Long-delivered shipments drop out too: tracking data is usually purged weeks or months after delivery.

4. 4 Paste carefully on Crowley’s page

   Crowley asks you to type the number on its own page, so paste it exactly — no spaces before or after, and no extra characters picked up from an email. If the page shows a security check, complete it and search again.

5. 5 Still nothing?

   Your booking agent or Crowley’s customer service can look the shipment up internally — have the container number and the issuing office or booking reference handy when you ask.

Frequently asked questions

How do I track a Crowley container?

Type your container number in the box above and press Track. You’ll land on Crowley’s own tracking page — paste your number there and search. Crowley container numbers usually begin with CMCJ, CMCU, CMCZ, SEFJ.

What does a Crowley container number look like?

Container numbers follow the ISO 6346 standard: four letters then seven digits (for example CSNU1234567). The first four letters identify the owner. For Crowley the owner prefixes are typically one of CMCJ, CMCU, CMCZ, SEFJ, SEFU, SEFZ. A format-valid example is CMCJ1060492.

Why does the Crowley page open without my number filled in?

Crowley asks everyone to enter the number on its own page (it has a security check), so it can’t be filled in ahead of time. We bring you to the right page — just paste your number there.

What if my number doesn’t start with CMCJ or CMCU?

Then it probably wasn’t issued by Crowley — shipments booked through a freight forwarder or partner carrier often travel under another company’s container number. Paste the number on our homepage and we’ll suggest the right shipping line, or check your shipping paperwork for who issued it.

Is this Crowley’s official tracking site?

No — this is a free, independent tool that brings every carrier’s tracking together in one place. When you track here you end up on Crowley’s own page, so everything you see comes straight from Crowley. We never see or store your shipment details.