Vessel Schedule: How to Check Sailings for Any Carrier

A vessel schedule is a carrier's published plan for one ship: every port it will call, in what order, with an arrival and a departure date for each call. You find it on the carrier's own website, searching either by the two ports you care about, by a single port, or by the name of the ship itself. Every major line publishes one, and they all use slightly different words for the same three searches.

The harder question is what those dates are worth once the ship is at sea. Published schedules slip, port calls get skipped, and a booking deadline can pass days before the ship is anywhere near the berth. This guide covers how to find a vessel schedule with each of the big carriers, how to read the deadlines attached to it, and how to sanity check the whole thing against where the ship actually is.

What a Vessel Schedule Actually Shows

A schedule entry is a list of port calls. Each line gives you a port, an estimated arrival, an estimated departure, and usually a voyage number that identifies that specific trip. The voyage number matters more than the ship name, because a vessel runs the same loop many times a year and your cargo belongs to exactly one of those rotations.

The sequence of ports, called the port rotation, is the part most shippers skip and then regret. It tells you whether your box moves on one ship the whole way or gets lifted off at a hub and put onto a second vessel. A route with a transshipment has two schedules stacked together, and a delay on the first leg can mean missing the connection entirely.

Proforma Schedule and What Changes at Sea

Carriers plan services as a proforma schedule: a fixed weekly pattern with a set number of ships, a set rotation, and a set transit time. It is a template, not a promise about one voyage. The actual dates published for your sailing start from that template and then move as berths, weather and congestion push the ship around.

This is why two searches a week apart can show different arrival dates for the same voyage. Nothing has gone wrong. The carrier is updating an estimate.

Three Ways to Search a Carrier Schedule

Almost every carrier portal offers the same three searches under different names. Point to point takes an origin and a destination and returns sailing options with transit times. Port calls takes a single port and lists everything arriving and leaving. Vessel schedule takes a ship name and returns its full rotation.

Maersk names all three explicitly and its support pages describe the third as showing every port of call plus the current position of the chosen ship. If you know your ship, that third search answers the question fastest. If you are still choosing a sailing, start with point to point.

MSC Vessel Schedule Searches

MSC splits its schedule tool into point to point and a vessel arrivals and departures view, and its schedule search also exposes the same data through an integration suite for customers who want it fed into their own systems. The vessel view is the one to use when a booking already names a ship and you want the rest of its rotation.

Searching by vessel is also the only reliable way to catch a rotation change. If a call gets dropped, the port pair search may simply stop offering that option, while the vessel view shows you the new sequence.

Maersk Schedules and the Deadlines Attached

Maersk's advanced search covers point to point, port calls and vessel schedules from one page, and the results for a port pair carry more than dates. The line's support guidance notes that each sailing option lists key deadlines alongside it: container gate-in, shipping instructions and the verified gross mass declaration.

Those deadlines are the operative part of the schedule for anyone actually shipping. The departure date tells you when the ship leaves. The cut-off dates tell you when you stop being able to put anything on it.

OOCL, Evergreen and COSCO

OOCL publishes sailing schedules by origin and destination, by service loop, and by territory, with the loop schedules updated daily and the regional ones weekly. You can also pull them as PDF or Excel files, which is the practical choice when you need to compare a dozen sailings rather than look one up.

Evergreen runs its schedules through ShipmentLink, which offers a dedicated search by vessel rather than by route. COSCO follows the same pattern of route search plus vessel search. The vocabulary changes between carriers, the underlying three searches do not.

CMA CGM and Hapag-Lloyd Routing Tools

CMA CGM calls its schedule product a routing finder, and it returns full routes rather than single legs, including transshipment solutions and the cut-off dates for each one. Its customer guidance lists the port, verified gross mass, shipping instruction and customs cut-offs as part of every schedule result, and the routes can be filtered for direct sailings only or for the earliest arrival.

Hapag-Lloyd offers an interactive schedule that handles door and terminal locations at both ends, which matters when the sea leg is only part of the move. If your cargo is collected inland, the ship's departure date is not your real deadline.

Cut-Off Times Decide Whether You Make the Sailing

Every sailing carries a stack of deadlines before departure, and each one closes a different door:

• Container gate-in, the last moment the box can enter the terminal for that vessel
• Shipping instruction cut-off, the deadline for the documentation that becomes the bill of lading
• Verified gross mass cut-off, the weight declaration required before the container can be loaded
• Customs cut-off, which varies by country and sits earliest in many export markets

Miss one and the container rolls to the next sailing, which on a weekly service means a week. The deadline you miss is almost never the departure itself, it is a document deadline several days earlier. A late box that does make it to the yard can then sit there accruing charges, which is the usual path into the demurrage and detention problem on the import side.

How Reliable Published Schedules Are

Reliable enough to plan with, not reliable enough to trust to the day. Sea-Intelligence, which measures on-time arrivals across 34 trade lanes and more than 60 carriers in its Global Liner Performance report, put global schedule reliability at 56.4% in July 2026, down 6.1 percentage points in a single month and the lowest figure of the year.

The other half of that number is how late the late ships are. The average delay for vessels that missed their window rose to 6.06 days in July 2026, the highest since January 2024. So the planning assumption for a mid-2026 sailing is roughly a coin flip on arriving in window, and close to a week of slip when it does not.

Reliability Varies Sharply by Carrier

The global figure hides a wide spread. In May 2026, when global reliability reached 64.7%, Maersk led the top thirteen carriers at 78.2%, Hapag-Lloyd followed at 76.0% and MSC recorded 71.6%, while several lines sat in the 50 to 60% band.

That gap is worth more than a small rate difference on a time sensitive shipment. A carrier twenty points more reliable is a carrier whose published schedule you can actually build an inland plan around.

Congestion Is What Moves the Numbers

July 2026 was not a random bad month. Sea-Intelligence attributed the drop to congestion across Asian ports, and its Sunday Spotlight analysis found all fourteen of the region's busiest ports losing on-time performance at once, with Yantian falling 23.5 points to 48.3%, Hong Kong down to 51.6% and Ningbo down to 34.6%.

The scale of the queue explains the rest. Container ship capacity waiting to berth worldwide reached 4.31 million TEU last month, more than a tenth of the global fleet, with just over half of it concentrated in North Asia, Linerlytica data showed. When that much tonnage is anchored rather than working cargo, every downstream schedule drifts.

Routing Changes Rewrite Transit Times

Schedules also move because the route itself changes. Carriers spent close to two years sending Asia to Europe services around the Cape of Good Hope, and through 2026 several lines have restored Suez transits service by service, with Suez traffic in late August back at levels last seen at the start of 2024.

For a shipper this is not an abstraction. The same service can gain or lose a week of transit depending on which corridor it uses, and the proforma schedule gets rebuilt when it switches. Any transit time quoted before the change is stale.

Check the Schedule Against the Ship

A published schedule is what the carrier plans. AIS position data is what the ship is doing. When the two disagree, the ship is right, and you usually learn it a day or two before the portal updates.

This is the part where independent tracking earns its place. Primo Nautic follows the vessel itself through live AIS data, so you can see whether the ship is under way at service speed, sitting at anchor outside the port, or already alongside. Because the app compares the captain's reported arrival time against its own calculated one, a gap between the two is an early signal that the schedule is about to change.

Build Your Own Buffer

Practical planning with a 56% reliable schedule looks different from planning with a 95% one. Three habits cover most of it:

• Work backwards from the earliest cut-off, not from the sailing date
• Add the current average late-arrival delay, around six days, to any inland commitment
• Re-check the vessel a few days before arrival rather than trusting the booking confirmation

Primo Nautic handles the third one with arrival and delay alerts, which is the difference between finding out at the port and finding out in time to move a truck booking. For a high value or time critical container, watching the ship directly is cheaper than the storage bill that follows a surprise.

Key Takeaways

A vessel schedule answers three separate questions, and every carrier portal lets you ask them in the same three ways: what sails between these ports, what calls at this port, and where does this ship go next. Learn the vessel search in particular, because it survives rotation changes that quietly remove options from the port pair view.

Treat the dates as estimates with a known error bar. Global on-time performance sat at 56.4% in July 2026 with late ships averaging six days behind, and carrier level results ranged from the high seventies down to the fifties. The deadlines around the sailing are firmer than the sailing itself, so the cut-off calendar deserves more attention than the departure date.

The published schedule and the ship's actual position are two different sources, and reading both is what turns a plan into a forecast you can act on.