MarineTraffic is the most widely used vessel tracking platform in the world, and for good reason — it has an enormous database of vessel positions, excellent coverage, and a clean interface. For anyone who needs to look up where a ship is right now, it's hard to beat.
But for freight forwarders who need to manage multiple active shipments and react quickly when vessels arrive, MarineTraffic has some significant limitations that are worth understanding.
It requires you to go to it
MarineTraffic is a passive tool. It holds information and displays it when you ask. It doesn't monitor vessels on your behalf and alert you when something happens.
This means that to stay on top of your shipments, you have to keep going back to it — checking the same vessels multiple times a day, every day. For a freight forwarder managing ten or twenty active shipments, that's a significant time commitment with no guarantee you'll catch an arrival at the right moment.
Vessels arrive at any hour
Container ships operate around the clock. A vessel can berth at Felixstowe at 3am on a Sunday and MarineTraffic will dutifully record the position change — but nobody will see it until someone manually checks the next morning.
By then, depending on port procedures, demurrage may already have started accruing. The cost of a missed overnight arrival can easily run to hundreds or thousands of pounds in storage and detention charges.
Searching is manual and repetitive
Every time you want to check on a vessel, you have to search for it by name or IMO number, wait for the page to load, and interpret the position data yourself. Multiply that by the number of active shipments you're managing and the number of times per day you check, and it becomes a significant operational overhead.
There's no way within MarineTraffic to say "watch this vessel and tell me when it arrives at this port" — which is the core thing freight forwarders actually need.
The alternative
Automated vessel arrival alerts solve all of these problems. Instead of going to check on vessels, you set them up once and receive an email the moment something happens — arrival, departure, or a significant delay past the ETA.
Portool is built specifically for this use case. You add a vessel with its IMO or MMSI number, specify a target port by UN/LOCODE, and from that point the monitoring is fully automated. Portool checks vessel positions every 20 minutes using live AIS data and sends an instant email alert on arrival.
MarineTraffic remains useful for looking up vessel details, finding LOCODEs, and checking positions on demand. But for the core freight forwarding need — knowing the moment a vessel arrives — automated alerts are a far more reliable and efficient solution.
Stop manually checking. Get instant alerts instead.
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