A void sailing or a blank sailing is when a ship does not sail. More specifically, it is a scheduled sailing that has been either canceled by the shipping company, or the company decided to skip a certain string owing to some shortcomings.

A string is a set of ports served weekly by a carrier. For example, one string might be Shanghai NingboLos AngelesOaklandShanghai. The string moves in a circular direction but always along with the same schedule of ports with a fixed departure day of the week set for each port.

Why do blank sailings happen?

Blank sailings happen when the demand for space on vessels is lower than usual. If the shipping carrier wants to keep freight rates up, they must limit the number of sailings. Demand for vessel space is low following holidays like Golden Week and Chinese New Year after factories have been closed, so it’s common to see blank sailings during these times.

Every Chinese New Year, offices and factories in China would shut down for up to three working weeks so workers could head home for the festivities.

This sets in place a chain reaction in which global import and export volumes plummet by two million Twenty-foot Equivalent Units (TEUs).

The result is too many freight ships for too little cargo. For shipping lines, this could incur losses from weak demand, as the cargo transported may not be enough to pay for fuel, staff wages, and other expenses.

To better balance out the supply and demand dynamic, they may choose to introduce blank sailings instead. This saves costs and puts fewer ships to work, especially when there is little demand for space on vessels.

Another reason for blank sailings is when carriers change the number of strings per week. If the carrier plans to cut down from 10 weekly Shenzhen to L.A. sailings to 5 weekly sailings, blank sailings will occur during that transition time. Strings are also rescheduled when new ocean alliances are formed.

How do blank sailings affect your shipment?

If your cargo were booked on a sailing that has been canceled, it would be rescheduled to move on to the next available sailing. Your shipment schedule will be adjusted as per necessity.

FleetMon’s data-driven technology helps businesses to monitor their maritime logistics supply chain. Check out our huge Port Database covering more than 5000 ports worldwide. Or visit our Help Center to read more about the ETA (Estimated time of arrival) calculation of vessels provided by FleetMon.

Author: Ankur Kundu

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