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Cable data © TeleGeography, CC BY-NC-SA 3.0 · Map data © Natural Earth · MapLibre

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Confirmed faultRepair underwayDegradedUnconfirmed reportRecently restoredFault locationCable, no incidentPlanned cableLanding point

© TeleGeography CC BY-NC-SA · Natural Earth · MapLibre

© TeleGeography CC BY-NC-SA · Natural Earth · MapLibre

Map
Incidents
Cables
Network

Hokkaido-Sakhalin Cable System (HSCS) status · Submarine Cable Status

Hokkaido-Sakhalin Cable System (HSCS)

No reported incidents

Length: 570 km
Ready for service: 2008 July
Owners: NTT
TTK
Suppliers: NEC

Landing points · 2

Ishikari, Japan
Nevelsk, Russia

Cable details and route: TeleGeography Submarine Cable Map, CC BY-NC-SA 3.0, retrieved 26 Sep 2026. Routes are approximate.