A blank sailing (or void sailing) is a scheduled port call or an entire voyage that a carrier cancels. Carriers blank sailings to manage capacity when demand drops, to catch up schedules after delays, or during disruptions such as canal restrictions.
For shippers, a blank sailing means the booked vessel never calls: cargo is rolled to the next departure, typically adding one or two weeks of transit time. Monitoring blank sailing announcements is essential for reliable supply chain planning.
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