Bawean, Indonesia

How the Internet Reaches Bawean

Bawean is a small volcanic island in the Java Sea, situated approximately 150 kilometres north of Surabaya off the northern coast of Java, administered as part of Gresik Regency in East Java province. Despite its remote island setting, Bawean is directly served by a submarine cable that physically connects it to the broader Indonesian telecommunications network. International internet traffic reaches Bawean through this single submarine cable link, which ties the island to multiple other landing points across Java and beyond.

Rather than routing traffic through a major hub before reaching the island, Bawean itself is a named terminus on the SJJK cable system. This makes it one of the smaller, more isolated landing points in Indonesia's submarine cable geography — a single-cable terminus serving a geographically compact island community.

The Cable Serving Bawean

The SJJK cable is the sole submarine cable landing at Bawean. Measuring 543 kilometres in length and ready for service in 2008, it is an entirely domestic Indonesian system, connecting Bawean to four other landing points: Anyer, Kalianda, Takesung, and Ujung Pankah, all within Indonesia. The cable forms an inter-island route across the Java Sea and connecting waters, linking Bawean into the broader national terrestrial and submarine network rather than providing a direct link to international cable corridors.

Regional Context

Indonesia hosts 40 submarine cables across 97 landing points, with an average cable length of 2,591 kilometres — reflecting the vast archipelago the network must bridge. Against this backdrop, Bawean is one of the smaller, single-cable terminus points in the country. Regional peers in the Indonesian network are significantly better connected: Batam serves as the country's most connected landing point with 15 cables, while Jakarta and Tanjung Pakis each host 7 cables. Nearby Anyer, which shares a landing point on the SJJK cable, has two additional cable connections beyond the one it shares with Bawean.

What This Means for Connectivity

All international and inter-island internet traffic flowing to and from Bawean passes through the single SJJK cable. An outage on this cable would sever the island's submarine connectivity entirely, with no redundant cable path available at the Bawean terminus itself. The cable's destinations — Anyer, Kalianda, Takesung, and Ujung Pankah — are all Indonesian locations, meaning the SJJK system functions as a domestic inter-island link rather than a direct international connection. Onward routing to the global internet would traverse Indonesia's broader national infrastructure from those connected points.

Bawean's position as a single-cable, domestically-oriented terminus illustrates a pattern common across Indonesia's outer islands, where submarine connectivity serves primarily to integrate remote communities into the national network, with international traffic aggregated at larger hubs elsewhere in the archipelago.