Port congestion has shifted from a temporary disruption to a structural feature of global supply chains, according to Maersk CEO Vincent Clerc, in one of the starkest assessments yet of how permanently the operating environment for container shipping has changed.

The Maersk chief executive's comments, reported by the Journal of Commerce, signal that the industry's largest carriers no longer treat congested terminals, stretched inland connections and equipment imbalances as cyclical problems that will ease once demand normalises. Instead, congestion has become a baseline condition — one that shippers, forwarders and carriers must plan around rather than wait out.

For cargo owners, the implication is direct: buffer capacity, longer transit planning windows and a premium on schedule reliability are now permanent cost items, not contingency measures.

From disruption to design parameter

The framing matters commercially. If congestion is structural, then the effective capacity of the global fleet is structurally lower than the nominal fleet statistics suggest. Ships stuck at anchor off major gateways are, in effect, capacity removed from the market. Carriers absorb that loss through slower vessel turnarounds, blanked sailings and, historically, through the kind of rate spikes that characterised the pandemic years.

For carriers, a permanently congested network erodes schedule reliability and raises operating costs — bunker consumption on slower rotations, repositioning of empty containers, and the cascade effect when one bottleneck delays vessels across subsequent port calls. For forwarders and shippers, it means the spot market can re-tighten quickly whenever demand picks up, because the slack that once absorbed volume surges no longer exists.

Clerc's assessment comes from a carrier that operates one of the world's largest container fleets and an extensive terminal network through APM Terminals, giving the company visibility across the full chain from origin gate to destination port. When a carrier of that scale describes congestion as embedded in the system, it reflects observations across trade lanes rather than a single bottleneck event.

What structural congestion means for shippers

The practical consequences for cargo owners fall into three buckets.

First, inventory strategy. If ports can seize up with little warning, safety stock becomes cheaper than production line stoppages. Shippers who moved to just-in-time models over the past two decades have already been rebuilding buffers, and Clerc's comments validate that shift as a long-term hedge rather than a temporary reaction.

Second, contract strategy. Structural congestion increases the value of schedule reliability relative to headline rate. Shippers may find premium products — guaranteed loading windows, dedicated capacity commitments — worth the surcharge, because the downside cost of a rolled booking compounds through the supply chain.

Third, routing and port choice. Diversification away from the most chronically congested gateways, where alternative terminals or secondary ports exist, becomes a standing element of routing decisions rather than an emergency workaround.

Carriers recalibrate networks

For carriers, a structurally congested system changes network mathematics. Vessel loops must be built with realistic port turnaround times, which effectively lengthens rotations and requires more ships to maintain the same weekly frequency on a trade lane. That dynamic silently removes effective capacity from the market even as newbuild deliveries add nominal slots — a tension that helps explain why freight rates have remained more volatile than pre-pandemic norms would suggest.

It also strengthens the case carriers have made for integrated logistics offerings. Maersk in particular has repositioned itself as an end-to-end integrator, and a permanently congested port system increases demand for services that manage the entire chain — door-to-door control, inland transport, warehousing and customs — rather than the ocean leg alone.

Terminal operators face their own calculus. Chronic congestion pressures them to invest in yard capacity, automation and gate efficiency, while carriers weighing where to deploy limited tonnage will favour gateways that can turn vessels quickly. Ports that fail to address dwell times risk losing calls as carriers consolidate volumes at more reliable alternatives.

The forward view

Clerc's message effectively closes the book on the notion that supply chains will revert to their pre-2020 operating rhythm. Shippers should expect capacity to remain tighter than headline fleet numbers imply, forwarders should treat reliability-adjusted transit times as the true planning metric, and carriers will keep pricing in the cost of networks built around permanent friction at the ports.