The Hokkaido-Sakhalin Cable System (HSCS) is a submarine cable that connects Hokkaido, Japan to Sakhalin Island, Russia. The cable system is owned and operated by NTT Communications Corporation, a Japanese telecommunications company.
The HSCS was launched in May 2008 and has a total length of approximately 570 kilometers. The cable system has a design capacity of 640 Gbps and includes two fiber pairs, each capable of transmitting 320 Gbps of traffic.
The HSCS serves as an important communication link between Japan and Russia, providing high-speed connectivity to support business, government, and individual users across both countries. In addition, the cable system helps to enhance the overall resilience of the global telecommunications network, as it provides an additional route for traffic to flow between Asia and Europe.
Overall, the Hokkaido-Sakhalin Cable System represents a significant investment in the development of global telecommunications infrastructure, supporting the growth and development of both Japan and Russia in the years ahead.