Maersk Container Tracking

Eight owner codes are registered to Maersk A/S today. Four are house codes (MAEU, MRKU, MSKU, MRSU); four tell acquisition history: SEAU came with Sealand, PONU with P&O Nedlloyd (2005), SUDU with Hamburg Süd (2017), and MNBU marks the refrigerated fleet. A red Hamburg Süd box with SUDU on the door is a Maersk container in every system that matters.

That heritage regularly confuses prefix lists elsewhere — several sites still file SUDU under a company that ceased to exist as a brand in 2023. The BIC register, and therefore our checker, resolves all eight to Maersk.

MAEU is Maersk’s SCAC, the carrier code printed on its own US payment instructions; no Maersk document we read says its bill of lading numbers begin with it, so enter a B/L or booking number exactly as your paperwork prints it. The tracking search takes either interchangeably with container numbers — useful because a B/L tracks the whole shipment when your cargo spans several boxes.

Append the number to the URL and the page opens already searched: that is the pre-filled link our checker generates. Beyond the timeline, Maersk exposes more self-service than most: the Maersk App mirrors tracking with push alerts, and reefer customers get Captain Peter — the remote-container-management assistant streaming live temperature, humidity and atmosphere data from the box itself.

Not from the container. A standard dry box has no power, no radio and no satellite receiver — it is a steel case with a number painted on it, and it reports nothing about itself. Every position you see against a Maersk shipment was reported by something else: a terminal crane, a gate reader, or the ship.

A live map on a carrier’s tracking page is almost always plotting AIS, the transponder every large vessel broadcasts with its position, course and speed. That is genuinely useful at sea: it is a real position rather than a schedule, and an ETA recalculated from actual movement. It is also the ship’s position, not your box’s, and the two part company the moment the container is discharged.

On land the map goes quiet. Between the gate-out and the delivery there is no vessel to follow, and the road leg appears only as whatever events the terminal and the trucker report. A container sitting on a chassis in a yard shows the last position of a ship it left days ago. Only specialised IoT equipment reports its own location, and wherever that exists it is a paid product sold to the shipper, not something a tracking page gives away.

Maersk and Hapag-Lloyd operate the Gemini network together, which means the two fleets share vessels across the main east–west trades. The practical consequence shows up in tracking: the vessel named against your container can be a Hapag-Lloyd ship even though every document you hold says Maersk. That is normal and it is not an error in the feed.

It does not move where you track. Events follow the bill of lading, not the hull — if Maersk issued your B/L, maersk.com has your events regardless of whose ship is carrying the box. The one case where it matters is a transshipment: Gemini is built around hub ports and feeder legs, so a box on an intra-regional feeder can go quiet for a few days between the discharge at the hub and the load onto the connecting ship.

We opened all eighteen carrier trackers in a real browser with a live container number in the URL. Three of them loaded the result directly; four loaded an empty search box and ignored the number entirely; the remaining eleven we have not tested and do not claim either way. Maersk is one of the three that work, which is why the tool on this page can hand you a finished link rather than a number to copy.

That is worth more than a saved paste. A working link can be bookmarked, mailed to a colleague or kept in a spreadsheet next to the shipment, and it will still open the right result tomorrow. With a tracker that ignores the parameter, any site offering you a "direct link" is opening an empty form and letting you believe otherwise.