Carriers are adjusting vessel deployment ahead of the U.S. port fee on China-built and China-operated ships. On the Asia–North America west coast trade, the share of Chinese-built vessels has fallen from 25–30% to 20–25%. The east coast trade shows a similar but smaller decline, while the transatlantic market remains unchanged. With less than three weeks to go before the U.S. port fee on China-built or China-operated vessels takes effect, major carriers are already adjusting their deployment strategies. A similar, though less pronounced, trend has emerged on the Asia–North America east coast trade, while the transatlantic market has yet to see a comparable shift.