Shanghai and Ningbo Port Congestion: What Shippers Need to Know

Port congestion at Shanghai and Ningbo is once again putting pressure on global container shipping.

Following a series of typhoons and weather-related operational interruptions, vessels have arrived in concentrated waves at two of the world’s busiest container ports¹. The resulting vessel bunching², terminal backlogs and schedule disruption have reportedly pushed berthing delays to around 10 days in some cases.

For importers and exporters, this is more than a local port issue. Shanghai and Ningbo are critical gateways for manufacturing and international trade³, connecting Chinese exporters with markets across North America, Europe, Southeast Asia and beyond. Delays at these ports can quickly spread through global carrier networks.

What Is Causing the Congestion?

The immediate trigger has been severe weather.

Typhoons affecting China’s eastern coast forced ports to suspend or restrict operations⁴ for safety reasons. Although terminals can resume work relatively quickly after a storm passes, the disruption does not end when a port reopens.

During a closure, vessels continue moving toward the region while scheduled port calls accumulate. When operations restart, terminals must handle both the existing queue and newly arriving ships.

This creates vessel bunching, where several ships arrive within a compressed period and compete for available berths, cranes, pilots and tug services.

Several operational pressures can then reinforce one another:

• Ships wait longer for a berth.
• Containers remain in terminals for extended periods.
• Yard density increases.
• Truck and barge connections become less predictable.
• Empty-container positioning becomes more difficult.
• Delayed vessels arrive late at subsequent ports.

A short weather disruption can therefore affect shipping schedules for several weeks⁵.

Effective Capacity Is Tightening

One of the most important consequences of port congestion is the reduction in effective shipping capacity.

The global containership fleet may not physically shrink, but ships waiting outside ports are temporarily unavailable for productive voyages⁶. They cannot complete their rotations on schedule, collect their next cargoes or reposition equipment as planned.

Recent market estimates have placed the amount of containership capacity waiting to berth globally at approximately 3.9 million to 4.3 million TEU⁷. North Asia reportedly accounts for roughly half of the current congestion⁸.

In absolute terms, delayed capacity has approached or exceeded levels recorded during the pandemic-era disruption⁹. However, the global fleet is now considerably larger, so the share of total capacity affected remains below the pandemic peak.

This distinction is important. The market is not necessarily returning to the same system-wide breakdown experienced during COVID-19, but the congestion is already significant enough to reduce schedule reliability and tighten available capacity on key routes.

For shippers, effective capacity often matters more than nominal fleet size. A vessel only contributes useful capacity when it is available in the right place and operating close to schedule.

How Could Freight Rates Be Affected?

Congestion tends to support freight rates by absorbing vessels and disrupting equipment flows¹⁰.

The effect may be particularly noticeable on transpacific services, where demand and operational pressure have kept the market relatively firm. When carriers have fewer ships available to maintain weekly departures, they may reduce capacity, cancel sailings or adjust port rotations.

Cargo owners may consequently face:

• Higher spot freight rates
• Reduced space availability
• Rolled bookings
• Additional peak-season or congestion surcharges
• Higher equipment repositioning costs
• Increased demurrage, detention or storage exposure

The impact will not necessarily be equal across all trade lanes. Demand on Asia–Europe services may remain softer than on transpacific routes, limiting the ability of carriers to increase rates uniformly.

The direction of freight rates will therefore depend on the interaction between port congestion, cargo demand and the amount of capacity carriers deploy on each route.

The Risk of Skipped Port Calls

As delays increase, carriers may omit scheduled port calls to recover their vessel rotations¹¹.

Skipping a port can help a ship return closer to schedule, but it creates additional complications for cargo owners. Export containers may be rolled to another sailing, while import containers could be discharged at an alternative port and moved through a different connection.

Transshipment cargo is especially vulnerable. A late vessel may miss its connecting service, leaving containers at a hub until space becomes available on a later departure.

Shippers should therefore monitor operational changes rather than relying only on the original booking confirmation. Published schedules can become outdated quickly during periods of congestion.

Potential Knock-On Effects Across Global Networks

A ship delayed in Shanghai or Ningbo does not recover the lost time immediately after departure.

It may reach the next Asian, European or North American port outside its planned berthing window. If the terminal cannot accommodate the late arrival, the vessel may wait again—extending the disruption further through the rotation.

This can produce several downstream effects:

• Congestion at transshipment hubs
• Missed feeder connections
• Irregular vessel arrivals at destination ports
• Sudden peaks in terminal and inland transportation demand
• Shortages of empty containers in export markets
• Longer and less predictable door-to-door transit times

The severity of these effects will depend on how quickly Shanghai and Ningbo clear their backlogs and whether further weather interruptions occur.

What Should Shippers Do Now?

Companies with cargo moving through Shanghai, Ningbo or connected transshipment hubs should consider several practical measures.

1. Confirm Operational Dates

Check actual terminal cut-off, estimated berthing and departure times with the carrier or logistics provider. Do not rely solely on the original sailing schedule.

2. Book Earlier

Secure space earlier than usual, especially for time-sensitive transpacific shipments. Early booking cannot eliminate disruption, but it provides more time to manage alternative options.

3. Allow Additional Lead Time

Build a realistic buffer into procurement, production and delivery plans. Port-to-port transit estimates may not reflect waiting time before loading or delays at connecting hubs.

4. Review Alternative Gateways

Where commercially practical, evaluate alternative Chinese ports or different service combinations.

However, changing ports should be based on confirmed capacity and inland transportation costs rather than congestion headlines alone.

5. Monitor Transshipment Cargo Closely

Identify shipments with tight connections and ask whether the carrier has confirmed onward space. Missing a connection may add several days—or longer—to the final delivery time.

6. Review Free-Time Conditions

Longer terminal dwell times can increase exposure to storage, demurrage and detention charges. Confirm free-time arrangements and clarify how carrier-caused delays will be handled.

7. Prioritize Critical Shipments

Not every container requires the same response. Identify cargo that could stop production, miss a sales window or create contractual penalties, and allocate premium transportation options selectively.

Outlook

The immediate outlook will depend on terminal productivity, vessel arrival patterns and weather conditions along China’s eastern coast.

Even without further port closures, clearing a large backlog takes time. Schedule reliability is likely to remain under pressure as delayed vessels move through their remaining port rotations.

The situation should not automatically be treated as a return to pandemic-era disruption. Nevertheless, it is a timely reminder that nominal fleet growth does not guarantee immediately available capacity.

When weather interruptions, port congestion, vessel bunching and equipment imbalances occur simultaneously, supply chains can tighten quickly.

For cargo owners, the most effective response is not panic—it is visibility. Companies that monitor actual vessel movements, maintain realistic inventory buffers and prepare routing alternatives will be better positioned to manage the disruption.

Sources: Shanghai Shipping Exchange, Linerlytica market estimates, Panama Canal Authority, The Loadstar and The Maritime Executive. Operational conditions can change rapidly; shippers should confirm current schedules directly with their carrier or logistics provider.

---