China tests submarine cable cutter at 3,500-metre depth

A Chinese deep-sea mission has successfully tested an advanced device capable of cutting through underwater structures such as submarine cable at a depth of thousands of metres. The “Haiyang Dizhi 2” research vessel completed its first deep-sea scientific mission of 2026 last Saturday, according to the Ministry of Natural Resources. The expedition included a cutting test of a deep-sea electro-hydrostatic actuator at a depth of 3,500 metres (11,483 feet), using technology that has drawn attention...