Premature Peak: Navigating the Summer Capacity Crunch

The ocean shipping peak has come early this year, with Drewry’s World Container Index reaching an 18-month high in mid-June, climbing more than 20% in a fortnight as Asia-Europe and Transpacific demand surged simultaneously. Other data confirms rates spiking after the 1 June general rate increases and peak season surcharges took hold. Accordingly, the US National Retail Federation has moved its peak month forecast forward from July to June.

The spike is being driven by tariff-driven frontloading on the Transpacific, fuel-cost anticipation on Asia-Europe, and an underlying capacity environment with virtually no flexibility to absorb either. Here we’ll examine market conditions, carrier strategy and conditions lane-by-lane to help you plan.

Global capacity is locked up tight

Alphaliner data shows the commercially idle container fleet sitting at 0.7% of global capacity, meaning that there is simply no spare space to redeploy. 

Adding in the roughly 310,000 TEU of vessels that have been diverted, sheltered or had transponders deactivated in response to Hormuz disruption and the picture tightens further. Ongoing Red Sea diversions, with Asia-Europe traffic still routing around the Cape of Good Hope, continues to absorb effective capacity through longer sailing times.

The result is a rate increase resulting organically from market conditions, rather than any strategic plan. Drewry’s most recent count showed just three blanks on the Asia-Europe lane in the week ending 21 June. 

Reports of a US-Iran interim agreement, still in negotiation at time of writing, with the Strait of Hormuz reopening within thirty days, have improved market sentiment, But a full return of traffic is expected to take months, and rate pressure has now shifted from fuel-driven to demand-driven. 

Carriers are balancing service with their own unit economics

Carriers are managing a genuinely difficult capacity environment, and the standard responses are all visible at scale:

• Named Account and long-term allocations have been adjusted by anywhere from 30% to 75% depending on the lane and carrier, with more cargo moving onto Freight All Kinds rates and premium products. 
• General rate increases landed on 1 June across most major lanes, with further increases announced for 1 July; CMA CGM has signalled a substantial Transpacific peak season surcharge effective 10 July.
• Emergency bunker surcharges are increasingly being integrated directly into freight rates rather than added separately, reflecting the volatility of fuel costs as a result of the Middle East crisis.

Carriers are also adding selective extra loader sailings to relieve pressure on the tightest services, particularly out of China and Southeast Asia. These are tightly managed and haven’t broadly eased space availability, but they do indicate that carriers are trying to increase capacity where they can. 

For shippers, the practical implication is that those with forward agreements are best positioned to navigate the squeeze. For most, working through a freight forwarder such as Zencargo with established carrier partnerships and consolidated buying power is one of the most effective ways to secure both, particularly for shippers without the scale to negotiate directly.

Key lane dynamics 

While a high level view of the market shows consistent rate rises from tight capacity, the precise dynamics driving developments vary lane-by-lane, which will influence how long the peak lasts and the opportunities on each lane.

Global container fleet deployment by trade

The Transpacific tariff rush

The US-China tariff truce announced in May triggered a wave of imports as shippers raced to bring in inventory during the ninety-day window before the tariffs potentially return. 

• Drewry data shows Transpacific spot rates climbing week-on-week through June, with East Coast rates rising faster than West Coast as importers position inventory ahead of FIFA World Cup demand. 
• Even where vessel capacity from China is operationally available, securing space is the harder problem. Carriers are heavily restricting NAC bookings and rolling cargo where allocations have been exhausted. 
• Operationally, the West Coast is the constrained side. Vancouver and Savannah are reporting vessel queues, with rail dwell times of up to six days at major inland gateways. East Coast ports are performing adequately, but absorbing the volume shift puts pressure on terminal yard space and trucking capacity.

For retailers looking to move products from China to the US, advance booking of three to four weeks is now the minimum on most Transpacific services.

Asia-Europe fuel rush

Shippers on the Asia-Europe lane are accelerating cargo ahead of the 1 July bunker adjustment, with Freightos reporting that fuel surcharges are expected to jump roughly 80% when the quarterly BAF updates. Drewry’s mid-June reading showed Shanghai-Rotterdam and Shanghai-Genoa rates both climbing more than 15% week-on-week.

• Capacity allocations under NAC and long-term agreements have been cut by up to 75% on some carriers. 
• Vessel space is booked solid three to six weeks ahead on most services.
• Shippers actively seeking alternative routings have found rail capacity now saturated too: China-Europe rail is operating at full deployment after months of absorbing diverted volume.
• European port congestion is compounding the issue. Antwerp’s seven-day average vessel waiting time is around 1.43 days; Rotterdam is under similar pressure.

Indian Subcontinent to Europe diversion effect

The IDC lane is experiencing a different version of the same squeeze. Middle East cargo has been actively rerouted through Indian ports since the Middle East conflict began, creating sudden demand spikes on services that weren’t built for that volume. 

• Kuehne+Nagel data from the week of 10-16 June shows Mundra averaging 3.05 days of vessel waiting time, and Nhava Sheva 2.13 days, both with high yard utilisation and rail or trucking constraints compounding inland delays.
• Berthing performance has deteriorated further. Scheduled services are seeing average delays of around two days while unscheduled calls are facing waits of up to five. 
• Trucking shortages at both ports have slowed inter-terminal transfers and inland evacuation, and Mundra has begun refusing some ad-hoc vessels to manage congestion. Carriers are making last-minute terminal changes within Nhava Sheva to spread the load.

Looking ahead, capacity on this lane could tighten further if carriers redeploy vessels out of the region to serve more lucrative Far East services as peak season builds.

What comes next

The squeeze is likely to persist through Q3. 

• Peak season demand has now overtaken fuel and tariffs as the dominant driver, and bunker normalisation from the reopening of the Strait of Hormuz will take months, even if the timeline holds.
• The NRF expects demand to peak in June, which means July rate increases may face more resistance than June’s did, but the underlying tightness, driven by structurally low idle capacity and ongoing Red Sea diversions, isn’t resolving in the short term.
• Capacity pressure should ease faster than rate pressure. Once the frontloading wave subsides, allocations will loosen, but rates take longer to come down, particularly when carriers are using the window to rebuild margins.

What shippers should do now

• Plan ahead: The most important step is simply to expand booking windows. On Asia-Europe and Transpacific, four to six weeks of forward booking is now the realistic minimum – and even that is no guarantee against rollovers. 
• Spread the risk: Diversify carrier strategy and lean on freight forwarder relationships for capacity access. This is the kind of market where partnership matters more than spot negotiation.
• Adjust pricing calculations: Anticipate continued bunker pressure through Q3. The 1 July BAF update is locked in regardless of Hormuz developments, and a return to pre-conflict fuel pricing will take time even if the political situation eases. 
• Build contingency: Work with your forwarder to account for the risk of blank sailings and rollovers in forward planning, and where possible, evaluate multimodal alternatives, though it’s worth knowing that the obvious alternatives, rail in particular, are already operating at capacity.
• Utilise technology: Predictive forecasting, powered by AI, provides not only better visibility but precision for supply chain planning. Leverage your freight forwarder partnerships and platform capabilities to navigate volatility. 

Our upcoming webinars will cover the early peak dynamics on the Transpacific and Asia-Europe trade lanes. Register now to secure your space and receive the recordings to watch on-demand.

To learn how we can support your business to stay ahead of the changes, talk to one of our team.