Madagascar

Indian Ocean position

Madagascar occupies a singular position in the western Indian Ocean — large enough to generate substantial traffic demand, remote enough that overland connectivity to any broader terrestrial network is simply not an option. Every international bit the island exchanges with the rest of the world must travel beneath the sea, making the quality and diversity of its submarine cable infrastructure a direct determinant of national connectivity.

The cable mix

Three active systems serve Madagascar. The Eastern Africa Submarine Cable System (EASSy) spans roughly 10,000 kilometres along the eastern African coastline, connecting Madagascar into a broader web of East African and international routes. The Lower Indian Ocean Network (LION), which entered service in 2009, is a comparatively short system at around 1,000 kilometres, linking Madagascar more directly into the regional Indian Ocean cluster. METISS Cable rounds out the portfolio, adding a third path between the island and the wider network.

The presence of three distinct systems matters. A single-cable island dependency is a well-documented fragility: one fault, one anchor drag or one maintenance window can strip an entire country of meaningful international bandwidth. Madagascar's three cables spread that risk across separate routes and separate operator relationships, which provides a structural resilience that many Indian Ocean island states lack. Whether that diversity fully insulates the country from outage scenarios depends on the degree to which these cables share common physical paths or landing infrastructure at any point — a risk that increases where routes converge along the same continental shelf approaches.

Landing points

The documented landing points — Toamasina on the north-eastern coast and Toliary on the south-western coast — are geographically separated by a considerable overland distance across the island. That physical separation is a meaningful characteristic. A cable fault or shore-end incident affecting one landing station does not automatically compromise the other, provided sufficient backhaul capacity exists to route traffic across the island between them. The spread also reflects the fact that Madagascar's population and economic activity are not concentrated at a single coastal point, meaning the landing geography serves both resilience and access objectives.

Capacity and forward outlook

Two landing points and three cables represent a functional baseline for an island of Madagascar's scale, though the capacity picture depends heavily on the design capacity and current utilisation of each system — details that vary considerably between the older LION infrastructure and more modern cable designs. What the existing mix does establish is a network that is neither isolated nor richly redundant: it sits in the middle ground typical of mid-tier emerging market island states, where incremental additions to the cable count carry real economic and social weight.