Dumai, Indonesia

Dumai, Indonesia: Submarine Cable Landing Point

Dumai is a coastal city in Riau Province on the island of Sumatra, Indonesia, situated approximately 188 kilometres from Pekanbaru, the provincial capital. Its position on the eastern coast of Sumatra, facing the Strait of Malacca, makes it a natural junction for submarine cable routes connecting Indonesia to Malaysia and to broader intercontinental systems. Seven submarine cables land at Dumai, making it one of the more significant landing points in the country's cable geography.

Among the most notable cables landing here is SeaMeWe-5, a 20,000-kilometre intercontinental system linking Indonesia with countries including Bangladesh, Djibouti, Egypt, France, and Italy. Also landing at Dumai is the Indonesia Global Gateway (IGG) System, a 5,300-kilometre cable connecting Indonesia with Singapore. Together, these cables extend Dumai's connectivity well beyond the regional corridor, reaching into South Asia, the Middle East, and Western Europe.

Cables Landing at Dumai

SeaMeWe-5 is a 20,000-kilometre submarine cable system that reached ready-for-service status in 2016. In addition to Dumai, the cable lands in Bangladesh, Djibouti, Egypt, France, and Italy, forming a long-haul intercontinental corridor linking Southeast Asia with South Asia, the Middle East, and Europe.

Indonesia Global Gateway (IGG) System spans 5,300 kilometres and entered service in 2018. The cable connects Dumai with Singapore and other landing points in Indonesia, supporting regional connectivity within the archipelago and to a key Southeast Asian hub.

Palapa Ring West is a 1,980-kilometre cable that became ready for service in 2018. It connects multiple landing points within Indonesia, forming part of the domestic submarine cable infrastructure linking Indonesian islands and coastal cities.

DAMAI Cable System stretches 575 kilometres and entered service in 2019. Like Palapa Ring West, its endpoints are entirely within Indonesia, serving domestic inter-city or inter-island connectivity.

Batam Dumai Melaka (BDM) is a 353-kilometre cable with a ready-for-service date of 2009. It connects Dumai with Batam in Indonesia and with Malaysia, reinforcing the cross-strait corridor between Sumatra and the Malay Peninsula.

Dumai-Melaka Cable System (DMCS) spans 159 kilometres and has been operational since 2005. It is one of the shorter cables landing at Dumai, connecting the city directly with Malaysia across the Strait of Malacca.

JaSuKa entered service in 2006 and connects Dumai with other landing points within Indonesia. No length data is available for this cable.

Regional Context

Within Indonesia's submarine cable landscape — which encompasses 70 cables across 139 landing points — Dumai's seven cables place it in the top tier of Indonesian landing points by cable count. It sits behind Batam (20 cables), Jakarta (9 cables), and Tanjung Pakis (9 cables), and is comparable to Manado (8 cables), while hosting more cables than Makassar (6 cables) and Kendari (4 cables). Dumai's cross-strait connections to Malaysia and its access to long-haul intercontinental systems distinguish its profile from many other Indonesian landing points.

Network Role

Dumai functions as a multi-cable hub that bridges domestic Indonesian connectivity with international routes. Its cable mix spans both short cross-strait links — the DMCS and BDM cables reaching Malaysia — and long-haul systems such as SeaMeWe-5 that extend connectivity as far as Western Europe. The IGG System and Palapa Ring West further anchor Dumai within Indonesia's national cable ring, while JaSuKa and DAMAI add additional domestic reach.

This combination of intra-Indonesian, regional Malaysia-facing, and intercontinental cables gives Dumai a layered role in the submarine cable graph — serving as both a terminus for cross-strait connections and a node on systems that traverse the Indian Ocean and beyond. In the wider Indonesian submarine cable network, Dumai represents one of Sumatra's primary points of international cable access.