Senegal

Senegal's place on the submarine map

Senegal sits on the westernmost point of the African continent — a geographic position that has made Dakar a natural landing point for cables crossing both the North and South Atlantic. The country's connectivity rests on three documented submarine systems, all of which make landfall in the capital.

The cable mix

The oldest and most significant system in terms of documented detail is the South Atlantic 3/West Africa Submarine Cable, universally known as SAT-3/WASC. Ready for service in 2001 and stretching roughly 13,000 kilometres, it was one of the foundational cables linking West Africa to Europe and onward to Asia via South Africa. For much of the region, SAT-3/WASC represented a generational shift away from satellite dependency — and Senegal was among the coastal nations that benefited from a direct landing.

The ATLANTIS and ATLANTIS-2 systems extend Senegal's reach across the Atlantic toward South America and beyond. ATLANTIS-2 spans approximately 12,000 kilometres, reflecting a transatlantic routing rather than the purely coastal path of SAT-3/WASC. Together, these three cables give Senegal connections in broadly different directions: northward toward Europe, southward along the African coast, and westward across the Atlantic.

Capacity and resilience considerations

Three cables across two landing localities — both documented as Dakar — provides a baseline level of redundancy, but the concentration of infrastructure in a single city introduces a degree of geographic vulnerability. A localised fault at the landing station, or damage to the cable segments converging on Dakar, would affect all three systems simultaneously. The country's resilience is therefore more a function of cable-route diversity than of dispersed physical infrastructure.

The age profile of these systems also matters. SAT-3/WASC entered service in 2001, making it one of the longer-tenured cables on the West African coast. Older systems typically carry lower spectral capacity relative to cables built with more recent technology, which shapes the ceiling on affordable bandwidth for operators relying heavily on legacy infrastructure.

Geography as advantage and constraint

Dakar's position at Africa's Atlantic edge is a genuine asset: it shortens cable distances to both Europe and the Americas, reduces latency on transatlantic paths, and makes Senegal a logical waypoint for systems serving multiple destinations in a single sweep. That same centrality, however, means the country's international connectivity is anchored at one point on the map — a characteristic that future cable developments would need to address to meaningfully diversify national resilience.