China’s ocean-floor push blurs the line between mining and war

China is rapidly expanding its deep-sea research and mapping efforts across key global waters, raising concerns that these activities may support future undersea conflict. This month, Reuters and CNN reported that China is expanding a vast deep-sea research and mapping effort across the Pacific, Indian and Arctic oceans, combining resource exploration with strategic data collection that analysts say could support future submarine warfare against the US and its allies.

Dozens of state-linked Chinese research vessels have spent years surveying seabeds, deploying sensors, and mapping underwater terrain in areas near Taiwan, Guam, the Philippines, and key maritime chokepoints, generating data on temperature, salinity, and acoustic conditions critical for submarine navigation and detection, the reports said.

CNN shows at least eight Chinese vessels conducting deep-sea mining exploration missions over five years, often exhibiting patterns — such as disabling tracking systems and operating beyond licensed zones — that experts say suggest dual-use, military-civilian objectives aligned with China’s “military-civil fusion (MCF)” strategy.

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