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China Tests Deep-Sea Cable Cutter: Global Internet at Risk?
20 Apr
Summary
- China tested a device to cut deep-sea cables at 11,483 feet.
- 99% of intercontinental web traffic relies on undersea cables.
- The new tech could lead to bifurcated global networks.

A recent maritime expedition by China successfully tested an advanced device designed to cut deep-sea fiber-optic cables at depths of 11,483 feet. This capability surpasses that of other nations, potentially giving China a significant edge in undersea telecommunications infrastructure. These cables carry approximately $22 trillion in financial transactions daily and 99% of all intercontinental web traffic.
This new technology, which can also repair cables, utilizes electro-hydrostatic actuators (EHAs) adapted from aerospace applications. It is expected to be integrated with a diamond-coated grinding wheel developed by China last year, capable of cutting through steel with precision. This advancement has raised concerns among foreign policy analysts about escalating tensions and the potential for bifurcated global networks, creating a quasi-Cold War scenario.
The scientists behind the innovation emphasize its potential for benign commercial uses, such as in the repair and construction of underwater oil and gas pipelines, contributing to the development of the blue economy and China's status as a maritime powerhouse.