Asia-North Europe Service Instability Up 78% Since Pandemic: Sea-Intelligence

Weekly liner service instability on Asia–North Europe has jumped 78% compared with the pre-pandemic baseline, according to Sea-Intelligence, the sharpest deterioration the analyst records across the major deep-sea container trades.

The figure comes from the Copenhagen-based consultancy's Sunday Spotlight issue 789, which measures instability as the standard deviation of the number of weekly offered services, expressed as a percentage of the average number of services. That normalisation matters. It lets Sea-Intelligence compare volatility across trades and across time, even as carriers add or remove capacity, without the change in the number of offered services distorting the picture.

The comparison window is stark: the post-pandemic period of 2020–2026 set against the pre-pandemic baseline of 2013–2019. On that basis, every major trade lane out of Asia has become materially less predictable.

Which lanes are worst hit?

The Asia–Europe trade lane has absorbed the deepest operational damage. Asia–Mediterranean sits just behind Asia–North Europe, with a 71% increase in weekly service instability — a level the analyst describes as part of the most profound operational disruption currently concentrated on the corridor.

The Transpacific tells a more nuanced story. Sea-Intelligence says the network there has also reached a higher baseline of service instability than before the pandemic, though it has absorbed the turbulence slightly better than Asia–Europe.

The gap within the Transpacific itself is wide:

• Asia–North America East Coast: +26%, the smallest comparative growth of any lane measured
• Asia–North America West Coast: +48%, nearly double its East Coast counterpart

That East Coast–West Coast spread is one of the more striking numbers in the analysis. It suggests the all-water services via Panama and Suez, however long their transit times, have kept a steadier weekly cadence than the West Coast strings that dominate transpacific tonnage.

What is driving the volatility?

Sea-Intelligence attributes the escalation to four intertwined factors: increases in blank sailings, services phasing in and out of networks, vessels delayed into the following week, and ad-hoc extra-loaders deployed to catch up on skipped capacity. Each one moves the number of weekly offered sailings up or down, and the standard-deviation metric captures the cumulative churn.

None of these behaviours is new. What has changed since 2020 is their frequency and scale, which the analysis quantifies for the first time against a seven-year pre-pandemic baseline.

What does it mean for shippers and ports?

The commercial consequences run in both directions, according to the analysis from Alan Murphy's team at Sea-Intelligence. For cargo owners, the constant weekly shifting in available capacity makes supply chain planning incredibly hard — a booking strategy built around a stated weekly sailing can collapse the moment that sailing is blanked or rolled.

The bigger risk sits at the quay. When the number of arriving vessels and containers swings week to week, Sea-Intelligence warns, the chance of sudden port congestion rises sharply. Congestion then feeds back into the system: longer waiting times for vessels, worse schedule reliability, and longer effective transit times even on lanes where the headline speed of the service has not changed.

That feedback loop is the core problem. Instability does not just inconvenience shippers on the week a sailing is cut — it degrades the performance of every other vessel calling at the same congested port, spreading the disruption beyond the trade lane where it originated.

For forwarders and carriers, the implications are equally direct: volatile weekly capacity undermines fixed weekly product offerings, complicates space commitments, and makes premium guarantees harder to price. The 78% figure on Asia–North Europe is, in effect, a quantified measure of how much less the published schedule now means.

Sea-Intelligence's data, tracking the trend through 2026, shows the post-pandemic elevation in instability persisting rather than reverting — signalling that shippers on Asia–Europe in particular should keep building buffer capacity and flexible routings into their plans.