Deep Sea Communication Cable DeepLink Completes Laying Across Mariana Trench: Ocean Floor Internet Reaches Deepest Point
NEC and Sumitomo Electric's DeepLink cable crosses the 11,000-meter Mariana Trench, providing broadband connectivity for Pacific deep-sea observatories and mining operations.
Deep Sea Communication Cable DeepLink Completes Laying Across Mariana Trench
On October 3, 2028, Japan's NEC and Sumitomo Electric announced the completion of DeepLink, the world's first deep-sea communication cable crossing the Mariana Trench. Running from Japan's Minamisatsuma port through the trench's deepest point (11,034 meters) to Guam, the cable spans 2,800 kilometers.
DeepLink uses specially pressure-resistant cable design with titanium alloy armor outer protection, withstanding 1,100 atmospheres of deep-sea pressure. The cable simultaneously integrates power supply lines and sensor arrays, providing communications and power for submarine earthquake monitoring stations and deep-sea observation equipment along the route.
NEC Marine Systems Division head Masato Yamashita says DeepLink is not merely a communication line but the backbone of the Pacific submarine observation network. Previously, deep-sea areas relied on satellite communications with bandwidth of just a few Mbps, while DeepLink provides 100Gbps fiber bandwidth, opening new possibilities for deep-sea scientific research and commercial development.
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