Maersk container tracking tells you what has already happened to your box. Maersk vessel tracking tells you where the ship carrying it is right now. Most people who search for container tracking Maersk only ever find the first one, then wonder why the page has said nothing new for a week.
Here is the shape of the problem. You enter a booking number on Maersk’s own site and get a clean list of milestones: gate in at the origin terminal, loaded on board, maybe a transhipment, then discharge. The last line reads loaded on board at Tanjung Pelepas six days ago. Nothing has moved on the page since, and nothing will until the ship berths somewhere. The booking system is not broken. It only logs checkpoints, and a container in the middle of the Indian Ocean has not reached one.
The ship, meanwhile, has been broadcasting its position continuously the whole time. This is how you get from the booking number to that position.
What Maersk's Own Tracking Actually Tells You
No account is needed to use it. Maersk’s tracking page at maersk.com/tracking accepts a container number, a booking number or a bill of lading number, and whichever one you paste in, it answers a shipment question properly: a dated list of events running from empty container pickup through gate in, loaded on board, any transhipment, discharge and final delivery, alongside the load and discharge ports, an estimated arrival date, and the container’s own physical details.
What it does not do is say anything about the hours or days between those events.
That is not a gap in the system so much as a description of what the system is for. A booking record exists to log custody, because custody is the thing a shipping line is accountable for at each handover. Nobody at Maersk’s Copenhagen office is updating a webpage to say a ship is now 600 nautical miles east of Colombo doing 19 knots. That figure exists, and it costs nothing to see, but it comes from an entirely different system.
Maersk Container Prefixes: MAEU, MSKU, MRKU and More
A container number runs to 11 characters under ISO 6346: three letters for the owner, a fourth for the equipment category, six serial digits, then a check digit. Maersk boxes carry several different owner prefixes rather than one, because the fleet has grown partly through acquisition. The most common are these.
| Prefix | Traces back to |
|---|---|
| MAEU | Maersk’s own SCAC code, the most frequent prefix on new equipment |
| MSKU | Maersk Line |
| MRKU | Maersk, commonly seen on reefer equipment |
| MNBU | Maersk |
| PONU | P&O Nedlloyd, folded into Maersk Line after the 2005 takeover |
PONU is the one that throws people.
Maersk bought P&O Nedlloyd for roughly 2.3 billion euros in 2005 and merged the combined container business under the Maersk Line name the following year, but registered prefixes do not get retired just because the company behind them changed. A PONU box today is a Maersk box. The letters are a fossil of a merger, not a sign the shipment belongs to somebody else. The equipment letter is always U for a freight container, which is the fastest way to tell a container number from a ship name at a glance, and that final digit is a checksum calculated from the other ten characters, built specifically so a mistyped number fails outright instead of quietly returning somebody else’s cargo.
How to Track a Maersk Container Step by Step
Step 1: Open the MarineRadar app
Launch the MarineRadar app to access the interactive map, where you can view vessels and maritime activity around the world.
Step 2: Open the Search option
Tap the search bar at the top of the screen to search for a container, vessel, port, or lighthouse.
Step 3: Enter the container number
Type your Maersk container number such as CAUU7660725, into the search field and select the Containers option to narrow down the results.
Step 4: Select the container from the search results
The app displays the matching container in the search results. Tap the container number to open its tracking details.
Step 5: View the container journey
The Container journey screen shows the container’s current status, shipping line, ports, and movement history. You can view milestones such as Gate In, Load, Container Departure and container arrival.
Maersk Vessel Tracking: Following the Ship Itself
Every ocean-going ship of any size transmits AIS, the Automatic Identification System, over VHF. Coastal stations pick it up near land, satellites pick it up further out, and a live map turns that stream into position, speed, course, heading, navigational status, draught, and the crew-entered destination and ETA alongside the ship’s name, MMSI and IMO numbers. Our guide to tracking container ships on MarineRadar covers the mechanics of reading that page. Cargo has never been part of that broadcast. AIS exists to stop ships colliding with each other, not to itemise what is stacked on deck, so no AIS receiver anywhere has ever reported a container number. That is the technical reason a live map cannot search one, and the reason the two systems are complements rather than competitors. Maersk’s own system knows which box sits on which ship, AIS knows where that ship is, and the vessel name from Step 3 is the join between them.
Update frequency tracks geography, not importance. Near ports and busy straits, coastal receivers refresh a position every few minutes. Mid-Pacific, the only source is satellite passes, and the gaps between updates stretch out. A ship going quiet for an hour somewhere between Guam and Los Angeles is routine; the same silence approaching Rotterdam would not be.
Tracking Ane Mærsk and the Rest of the Fleet
None of this needs a shipment attached to it at all.
Ane Mærsk is worth searching on its own merits: christened in January 2024, she carries 16,000 TEU, and she was the first large containership built to run on green methanol as well as conventional fuel, sailing the AE7 service between Asia and Europe. Her page on MarineRadar carries the same live position, speed and route history as whichever ordinary feeder happens to be carrying your own box this week, and a single dot only answers where. The track answers what kind of voyage it has actually had, and draught readings shift too, dropping as a ship discharges along its rotation, which is a useful tell for how close a call at a given port really is. For finding what else is moving near a specific terminal, see finding nearby container ships.
Why the Maersk ETA and the Live Map Disagree
Eventually Maersk will show Friday and the live map will show the ship arriving Tuesday, and it is tempting to assume one of them is wrong.
Neither is.
Maersk’s date is a commercial estimate covering the whole door-to-door movement, including any transhipment leg and the inland journey after discharge. The AIS ETA is a figure a deck officer typed in for the next port call, updated whenever there was a spare moment on the bridge, and it often still shows the previous port for a day or two after the ship has actually left. So a vessel can genuinely tie up on Tuesday while your container genuinely is not available for collection until Friday, with discharge, customs clearance and a truck booking sitting in the gap. Berth waiting is the part neither number shows until it has already cost you the day; the ship’s speed and track over the final approach are the more honest read.
What Usually Goes Wrong
- No vessel name appears yet, because the box is gated in or sitting at a depot but not yet loaded. There is nothing to search until it is aboard.
- The named ship changes partway through. Transhipment at a hub port is routine on Maersk’s network, so a box can move to a second vessel while the booking page still shows the first.
- Someone pastes a container number straight into the ship search box on a live map. It will never resolve, because AIS carries none of that data.
- The tracking result is for Maersk Line, Limited rather than Maersk Line. MLL is a separate, US-flag subsidiary based in Virginia that runs government and project cargo, not the international container network your booking sits on.
- Two ships in a large fleet share a near-identical name. The IMO number settles it.
Who Actually Uses Both Halves
Importers plan warehouse labour around Maersk’s dates and check the map to see whether those dates are holding up. Forwarders lean on the live position to answer a client in the quiet days between booking events, which is usually the difference between a routine phone call and an awkward one. Hauliers care the most, because a driver booked against a berth slot for a ship still queuing offshore is an afternoon paid for and wasted.
Not every box stays on one line for its whole journey, either.
If your shipment transfers to an MSC vessel at a transhipment hub, the same two-step approach applies. Our MSC container tracking guide walks through that company’s own prefixes and portal the same way.
Conclusion
Once you know the number carrying your Maersk container, you can take the next step with MarineRadar . Instead of checking shipment milestones repeatedly, search for the vessel in the MarineRadar app to view its position and follow its movement on the live maritime map. This gives you a clearer picture of where the ship is during its voyage and helps you understand the container’s journey beyond the individual shipment updates
MarineRadar is free to start on Android and iPhone. Paste in the vessel name from your Maersk booking and it will be on screen within seconds.
FAQs
How to track a Maersk container?
Open the MarineRadar app, enter your Maersk Container Number in the Search bar, and select Containers Choose your container from the results to view its journey, including its current status, ports, departure, arrival, and shipment milestones. You can also search for the Vessel carrying the container to follow its movement on the live maritime map.
How can I track my Maersk Line container?
The same way regardless of prefix. MAEU, MSKU, MRKU, MNBU and PONU are all Maersk; PONU is simply a legacy P&O Nedlloyd code carried over from the 2005 merger.
How to track a Maersk vessel?
Search the ship’s name or IMO number on a live map for its position, speed, course, destination and route history.
How do I track my container status?
Maersk’s tracking page gives you status: where the box was last logged, not where the ship physically is between those entries. For the gap in between, you need the vessel’s live AIS position, which comes from a separate system built for navigation rather than cargo custody, and has nothing to do with the shipment record at all.
Can I track a Maersk container by its container number on a live ship map?
No. AIS, the system every live ship map is built on, carries navigation data only, and has never carried cargo information of any kind. A container number has nothing on a map to match against. Track the box on Maersk’s own page, note the vessel it names, then track that name on the map instead.
Why has my Maersk container status not changed for days?
Because the page logs checkpoints, not motion, and an ocean crossing sits between two checkpoints for days at a time.
How accurate is the ETA on a Maersk ship?
Treat it as intent rather than a promise. A deck officer enters it for the next port only, it is not always refreshed on departure, and it says nothing about a wait for a berth, which is usually the biggest single delay on the whole voyage.
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