Introduction
With the U.S. maintaining a 25% tariff on steel and aluminum imports from China, the Transpacific trade lane is facing a cargo surge. Businesses are racing to ship goods before mid-July cut-off dates, colliding with the traditional peak season. Here's how the industry is responding.
Tariffs Still Driving Urgent Shipments
The expected policy relief on tariffs hasn’t arrived. As a result, many U.S. importers are fast-tracking shipments to avoid costly duties. Sea-Intelligence, a maritime analytics firm, described the situation as a “partial pause,” noting that uncertainty is forcing action now rather than later.
Carriers Under Pressure After Service Cuts
Carriers had previously reduced Transpacific sailings due to declining volumes. But with the resurgence of pre-cutoff demand and seasonal cargo, they're now scrambling to reallocate vessels—many of which had been shifted to other trade lanes or idled.
The Double Whammy: Peak Season + Tariff Panic
The 2025 peak season starts mid-July, coinciding with the tariff-driven shipment wave. Retailers and manufacturers want cargo in-hand before the August 14 cutoff. The result? Potential port congestion, equipment shortages, and rising freight rates.
East Coast Sees Modest Recovery
Some additional capacity is being added to East Coast services. But improvements may come too late to meet surging demand. Full recovery is expected by late June—just when volumes will spike.
West Coast Bottlenecks Likely
West Coast capacity improvements aren’t expected until mid-July, right when the cargo surge peaks. Ports like Los Angeles and Long Beach are at risk of congestion, impacting trucking and rail downstream.
China Exporters Rushing to Ship
Sea-Intelligence CEO Alan Murphy warned of a significant container spike from China. Exporters are accelerating production schedules to meet U.S. demand, further stretching available vessel space.
Cost Strategies Split Among U.S. Companies
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54% of U.S. companies plan to pass tariff costs to consumers
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22% will absorb the costs internally
This shows mixed strategies as firms try to protect margins without losing competitiveness.
Implications for the Supply Chain
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3PLs and forwarders must prepare for high-volume operations
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Ports may face backlogs, especially in July and early August
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Carriers could benefit from higher rates, but must avoid service gaps
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Inventory strategies are shifting toward early ordering and warehousing
Conclusion: Prepare for Disruption
The post-tariff cargo surge is a real and imminent challenge. Shippers and logistics providers must act quickly and collaboratively to prevent delays and cost escalations.




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