Tarama, Japan

Tarama, Japan: Submarine Cable Landing Point

Tarama is a landing point located in Japan, serving as a terminus for submarine cable infrastructure in the southwestern region of the Japanese archipelago. As an island community, its cable connectivity is provided through a dedicated domestic submarine link rather than international connections. One submarine cable lands at Tarama, connecting it to other parts of Japan and supporting inter-island communications across the Okinawa island chain area.

The single cable serving Tarama is the Okinawa Remote Islands system, which, as its name indicates, is oriented toward linking remote island communities within Japan. This positions Tarama as a domestically focused landing point, enabling intra-Japan connectivity rather than intercontinental or international routing. The cable's role in serving remote island communities reflects the geographic realities of Japan's dispersed southwestern island groups.

Cables Landing at Tarama

The Okinawa Remote Islands cable is the sole submarine cable landing at Tarama. The system spans 915 kilometres and reached its ready-for-service status in 2017, with its current status designated as draft. All endpoints on this cable are located within Japan, confirming its function as a domestic inter-island cable system. With a total length of 915 kilometres, it serves as a regional intra-Japan link designed to extend connectivity to communities in the Okinawa island group.

Regional Context

Within Japan's submarine cable network, Tarama is one of 68 landing points across the country that together host 51 submarine cables. Compared to other Japanese landing points, Tarama hosts fewer cables than major hubs such as Shima (12 cables), Maruyama (9 cables), Chikura (8 cables), and multi-cable points like Hachijo, Minamiboso, and Naha, each of which hosts four cables. With a single cable, Tarama ranks among the more modestly served landing points in Japan, though it remains part of a nationally significant network of coastal access points.

Network Role

Tarama functions as a single-cable terminus within Japan's domestic submarine cable infrastructure. Its connection via the Okinawa Remote Islands system enables inter-island communication within Japan's southwestern island chain, ensuring that remote communities in the region have access to the broader national telecommunications network. This is a point-to-point domestic role rather than the multi-corridor international function seen at Japan's larger landing points.

Within the broader Japanese submarine cable graph, Tarama represents one of several smaller, domestically oriented landing points that collectively extend network reach to geographically isolated island communities. Its presence in the network illustrates how Japan's submarine cable infrastructure extends well beyond its major international hubs to serve the connectivity needs of remote island populations.