Hokkaido-Akita cable system is a 770km fiber optic submarine cable connecting Hokkaido and Akita Prefecture, Japan.

Hokkaido-Akita cable system is jointly built by NTT Communications Corporation, KDDI Corporation, SoftBank Corp. and Rakuten Mobile, Inc. It is the first submarine cable project participated by Rakuten Mobile, aiming to respond to the increase in traffic expected to come with the increasing adoption of 5G and other high speed, high-capacity networks, as well as expand redundancy in the network for times of emergency.

In addition, the joint construction agreement will allow for cost-effective construction of this valuable infrastructure.

Hokkaido-Akita cable system will have a designed capacity of more than 160 Tbps.