
The booking was confirmed. The container was packed, gated in before the cutoff, and the vessel sailed on schedule. Your cargo is not on it.
This is a roll, and in peak season it is common enough that it should be planned for rather than treated as a failure. What makes it expensive is not the roll itself. It is the four or five days that usually pass before anyone tells you, because by then the decisions that would have helped are gone.
A roll is a carrier moving your container from the vessel it was booked on to a later one. Your booking is not cancelled and your cargo is not lost. It is sitting in the terminal or the yard waiting for the next sailing, which on a major lane might be a week away and on a thinner one considerably longer.
Worth separating from two things it gets confused with. A short shipment is cargo that never made it to the terminal in time, which is an origin problem and usually yours or your supplier's. A cancelled sailing, sometimes called a blank sailing, is the carrier removing the vessel call entirely, which rolls everybody on it rather than selecting you.
Almost always it is capacity, and almost never is it personal.
The vessel is overbooked. Carriers sell more space than the ship has because a predictable share of bookings never show up. When more of them show up than expected, something comes off.
Weight limits. A ship can fill up by weight before it fills up by slots, particularly on services with draft restrictions or multiple port calls. Heavy containers get rolled first for this reason alone.
Documentation is not clean. If the filing is incomplete or late, the container will not load. This is the category worth caring about, because it is the only one you control.
Priority. Contract cargo generally loads ahead of spot cargo, and cargo booked six weeks out generally loads ahead of cargo booked six days out.
Peak season simply makes all four more likely at once.
Carriers are not consistent about notifying anyone that a roll has happened. Frequently the first hard evidence is that the vessel's departure is confirmed and your container is still showing at the terminal, which is something you only see if somebody is actually watching.
This is the practical argument for real visibility on a shipment rather than a tracking number you check when you remember. The gap between a roll happening and you learning about it is where the cost accumulates: production plans made against the wrong arrival date, trucking booked for a delivery that will not exist, and a customer told a date that is no longer true.
Once a roll is confirmed, the useful actions are narrow and time sensitive.
Get the new vessel and the new estimated arrival in writing. Not the next sailing on the schedule. The specific vessel your container is now confirmed on, because being rolled once does not stop you being rolled twice.
Ask whether the cargo is still gated in. If it is inside the terminal, storage clocks may be running, and that is a separate charge from anything that happens at destination. If it has been returned to a yard, there may be a gate fee to bring it back.
Reset every downstream date before somebody else does. The customs entry, the delivery appointment, the trucker. An entry filed against a vessel your cargo is not on creates its own problem later.
Decide quickly whether part of it should fly. If a fraction of the shipment is what actually holds up production, splitting it and moving that portion by air freight is often cheaper than the consequences of the whole thing arriving late. That decision is worth much less on day five than on day one.
You cannot roll proof a shipment, but you can move yourself down the list of candidates.
Book earlier, because allocation is decided long before the cutoff. File complete and accurate documentation ahead of the deadline rather than against it, since a documentation roll is entirely self inflicted. Tell your forwarder when a shipment genuinely cannot move, because cargo flagged as critical can be booked with protection or placed on a different service. And on a lane where a roll would be genuinely damaging, ask what the next two sailings look like before you commit to the first one.
One last point that catches people out. A roll shifts your arrival, which shifts the free time at destination, which is where demurrage and detention start. A delay that costs nothing at origin can cost a great deal at the other end if nobody moved the collection plan with it.
If you have fourth quarter cargo that cannot be late, talk to us before you book it rather than after it rolls.
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