If you need to know which cargo vessels are arriving at a given port — perhaps you are tracking a specific shipment, planning a port visit, or researching a trade lane — there are three layers of public information you can use, in increasing order of authority and decreasing order of accessibility.
Layer 1: PortWatch and similar AIS-derived directories
Open the port profile on PortWatch (browse the all ports list or use the country index to find the relevant nation). The page shows currently arriving vessels with declared ETAs, currently moored vessels, and recently departed vessels. The data is AIS-derived and refreshed periodically. This is the fastest way to get a directory-level answer for any port in the dataset.
Layer 2: The port authority’s own publication
Most major commercial ports publish their own expected-arrivals schedule on their official website, often updated continuously. The port authority’s schedule is the operationally authoritative source — it reflects what the harbour master’s office actually expects — but it is structured for terminal operators and shipping agents rather than for casual browsing. Look for terms like “Vessel Movements”, “Expected Arrivals”, or “Berth Allocation” in the port’s navigation.
Layer 3: The carrier and the agent
If you are tracking a specific shipment, the most authoritative answer comes from your shipping line or freight forwarder, who has access to the carrier’s booking systems and the local port community system. They can tell you which vessel is carrying your container, where the container currently is in the loading or discharge sequence, and when the vessel is expected at the next port on the rotation. PortWatch will not give you shipment-level granularity — it is a vessel-level directory.
Practical tips
ETAs in any system — PortWatch, the port authority’s, or the carrier’s — are routinely revised in transit to reflect weather, routeing changes, and pilot scheduling. An ETA more than 48 hours out should be treated as a guideline. ETAs within 24 hours are generally reliable. Do not infer the actual arrival from the AIS-reported destination field alone — it is operator-entered free text and can be stale or wrong.