Japan’s supplies to US Coast Guard aimed at testing Beijing, observers say
- American coastguard patrol vessel was serviced by a Japanese supply ship during joint exercise, Japan reveals
- ‘Improved interoperability’ hailed by Japan, while Chinese observers say the announcement is a challenge to China
“This is the first time that a [Japan Maritime Self-Defence Force] supply ship has replenished a US Coast Guard patrol vessel,” said Toshihiko Yoshifuku, the commanding officer of JS Oumi. “I believe that we have further improved interoperability.”

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Service support has been a long-standing area of cooperation between Japan and the US, but recent tensions over the Taiwan Strait meant such operations have raised suspicion in China, said Zhou Chenming, a military expert in Beijing.
“Japan is testing the waters,” he said. “The coastguard is also part of the US armed forces. By releasing the statement, it is using words to test China’s bottom line. If China doesn’t condemn it, Japan would continue to [support US ships].”
The US Navy did not have enough ships in the Western Pacific to replace those deployed longer than planned, and had to use vessels from its coastguard and those of its allies, he said. Compared with navy ships, US Coast Guard vessels carry fewer missiles and other weapons, and are suitable for patrol and low-intensity conflicts outside contested waters, Zhou said.
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The US’ military exercises with its allies in the region are held to deter China from trying to take Taiwan by force, said Ni Lexiong, a maritime expert in Shanghai, adding that last week’s servicing cooperation would add to the US-Japan alliance’s combat capability.
“The supply was about Japan showcasing its capability to China, Taiwan and the US – before, it was only doing the talk,” he said. “War is all about backstage support. What’s war without food and water? Support can win wars.”
Beijing regards Taiwan as a breakaway province that must be unified with mainland China, by force if necessary. Chinese diplomats have said repeatedly that Tokyo’s alliance with Washington should not develop at the expense of China’s interests.
