China Tests Deep-Sea Cutting System For Cables And Pipelines At Depths Of Up To 3,500 Metres

China Just Proved It Can Cut Undersea Cables at 3,500 Meters Deep. Guam’s 12 Fiber-Optic Lines Serve Google, the U.S. Military and the Entire Second Island Chain

SUMMARY AND KEY POINTS: China’s Haiyang Dizhi 2 research vessel has successfully tested a deep-sea cable-cutting device at 3,500 meters — 11,483 feet — marking the first publicly acknowledged demonstration by any country of severing capability at that depth. The test, completed last Saturday and confirmed by China’s Ministry of Natural Resources and the state-run China Science Daily, used an electro-hydrostatic actuator developed by the China Sh…

China Tests Deep-Sea Cutting System For Cables And Pipelines At Depths Of Up To 3,500 Metres

The test was carried out during a 2026 expedition by a research vessel, under the supervision of the country’s Ministry of Natural Resources.