China's Canal Retaliation: How Beijing Is Punishing Panama With Ship Detentions

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Panama's foreign minister has publicly called on China to respect his country's legal sovereignty — a rare diplomatic rebuke that lays bare the growing tension between the two nations over control of ports near the Panama Canal.

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What Happened?

On January 30, 2026, Panama's Supreme Court invalidated the legal framework supporting Hong Kong-based CK Hutchison's concession to operate the Balboa and Cristóbal terminals on the Pacific and Atlantic sides of the Panama Canal. The decision followed an audit that uncovered alleged irregularities and raised questions about the concession's legal basis.

Following the ruling, Panama's government moved swiftly. The Panamanian government appointed U.S. subsidiaries Maersk APM Terminals and Mediterranean Shipping Company's Terminal Investment Limited as interim operators under 18-month agreements.

China was furious. Beijing labeled the court ruling an "act of bad faith" — and within weeks, Panama began feeling the consequences at sea.

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A Spike in Ship Detentions

U.S. regulators say the number of Panama-flagged ships detained in China has risen sharply in recent months, with 92 out of 124 vessels detained for inspection in Chinese ports in March.

The numbers tell a clear story. Historical Tokyo MOU data indicate that between March months from 2016 to 2025, the share of detained ships flying Panama's flag typically ranged roughly between 21.6% and 42.5%. The March 2026 surge stands well outside that range.

Panama operates one of the world's largest maritime registries. The Panama Maritime Authority reports a fleet of over 8,800 vessels under its flag, placing Panama among the world's largest registries by carrying capacity. That makes targeted inspections of Panamanian-flagged ships an especially powerful lever of economic pressure.

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"Punishing Panama" — The U.S. Verdict

Washington is not staying silent. U.S. Federal Maritime Commission chair Laura DiBella stated that China had imposed a surge in detentions of Panama-flagged vessels in Chinese ports under the guise of port state control, far exceeding historical norms, and that the intensified inspections were carried out under informal directives and appear intended to punish Panama after the transfer of Hutchison's port assets.

In a parallel move, the Chinese Ministry of Transport summoned Maersk and MSC to Beijing for high-level discussions. Chinese government-owned carrier COSCO subsequently suspended its services at Balboa and rerouted operations.

When China's Foreign Ministry was directly asked whether Beijing was targeting Panamanian vessels in retaliation, the government spokesperson dodged the question, replying that China's position on issues related to the Panama Canal ports is clear, and that the U.S.'s repeated wrongful allegations only reveal its attempt to take control of the canal.

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Collateral Damage: Japan Caught in the Crossfire

The detentions are not only hurting Panama. China's surge in detentions of Panama-flagged vessels is inflicting disproportionate damage on Japanese shipowners who have no stake in the Panama Canal terminal dispute. Of nearly 70 vessels detained at Chinese ports since March 8, 39% are Japanese-owned.

This shows how flag-state retaliation — targeting ships by the country where they are registered, not by who owns them — can hit innocent third parties hard.

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Panama Pushes Back

Speaking at a diplomatic conference in Asunción, Paraguay, Panama's Foreign Minister called the situation unacceptable and asked China to extend the same legal respect Panama grants to others. The minister expressed hope that the spike in detentions seen in March would return to normal levels.

Panama has also received international backing. The United States, along with several other nations, formally raised concerns about the detentions with China.

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The Bigger Picture: A Canal Between Two Powers

This dispute is about far more than shipping inspections. CK Hutchison has been caught in a three-way fight between China, the United States, and Panama following U.S. President Donald Trump's return to the White House. Starting in December 2024, Trump began to allege that the Panama Canal was being operated by China and promised to reassert U.S. dominance over the Western Hemisphere.

The Panama Canal handles roughly 5% of all global maritime trade. Control over the terminals at its entry points is therefore a matter of strategic importance — not just for Panama, but for every nation that depends on smooth global shipping.

CK Hutchison, which operated the ports for nearly 30 years, has rejected the Panama court ruling, accused Panamanian authorities of unlawfully seizing property, and launched an international arbitration case against Panama, claiming damages of more than $2 billion. The dispute has also put a significant business deal at risk: CK Hutchison's planned $23 billion sale of a majority stake in its global ports business to a consortium led by BlackRock and MSC has been complicated by the standoff.

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What Comes Next?

With U.S. regulators monitoring the situation closely, Panama appealing to international norms, and China showing no signs of backing down, the standoff over the canal ports is far from over. The question is whether diplomatic pressure — or economic pain — will eventually force one side to blink.

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Sources:

1. U.S. Federal Maritime Commission – Official Statement by Chair Laura DiBella: https://www.fmc.gov/ftdo/statement-of-chairman-dibella-on-chinas-detention-of-panama-flagged-vessels/
2. Newsroom Panama – Ship Detentions Reporting: https://newsroompanama.com/2026/03/29/china-is-detaining-panama-flagged-ships-amid-the-battle-over-port-control/
3. Al Jazeera – CK Hutchison Port Seizure: https://www.aljazeera.com/news/2026/2/24/hong-kong-conglomerate-says-panama-canal-ports-seized-by-authorities
4. Container Management / Lloyd's List Intelligence – Japanese Shipowners Impact: https://container-mag.com/2026/03/27/china-panama-flag-detentions-japanese-shipowners/
5. Panama Daily News – Tokyo MOU Data Analysis: https://panamadaily.news/china-tightens-inspections-panamanian-ships/
6. Bloomberg – Panama Takes Control of Canal Ports: https://www.bloomberg.com/news/articles/2026-02-23/panama-to-occupy-canal-ports-after-court-scraps-ck-hutchison-deal

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