Aden-Djibouti: A regional submarine cable linking Yemen and Djibouti
The Aden-Djibouti submarine cable is a 269-kilometer fiber optic system connecting
Aden, Yemen, and
Djibouti City, Djibouti. Operational since 1994, according to GeoCables records, this cable is owned by a consortium of operators including Djibouti Telecom, Orange, Sparkle, Tata Communications, and TeleYemen. It remains listed as in service and is a key regional link between the Arabian Peninsula and the Horn of Africa.
What makes this cable particularly notable is its longevity and strategic location. Despite being in operation for nearly three decades, its design capacity, fiber pair count, supplier, and technological specifics are not publicly disclosed, leaving gaps in understanding its current capabilities. Additionally, its corridor is highly competitive, with numerous modern cables landing at both Aden and Djibouti City, including
Asia Africa Europe-1 (AAE-1),
2Africa, and
Africa-1.
Quick facts
| Cable name | Aden-Djibouti |
| Length | 269 km |
| Ready-for-service year | 1994 (GeoCables database; other sources not surfaced) |
| Owners | Djibouti Telecom, Orange, Sparkle, Tata Communications, TeleYemen |
| Status | In service |
| Design capacity | Not disclosed |
| Fiber pairs | Not disclosed |
| Supplier | Not disclosed |
| Technology | Not disclosed |
| Landing points | Aden (Yemen); Djibouti City (Djibouti) |
| Alternatives in the same corridor | Asia Africa Europe-1 (AAE-1) |
Route
The Aden-Djibouti cable connects two key port cities: Aden in Yemen and Djibouti City in Djibouti. Aden, located on the southern coast of Yemen near the Gulf of Aden, is a historically significant maritime hub. Djibouti City, situated at the entrance to the Red Sea, serves as a critical gateway for international trade and telecommunications. This corridor is relatively short at 269 kilometers, reflecting its regional focus.
Both landing points host multiple submarine cables, making them highly connected nodes in global telecommunications. Aden is also a landing point for Asia Africa Europe-1 (AAE-1), while Djibouti City hosts a wide array of cables, including 2Africa, Africa-1, and
SeaMeWe-6.
Why it was built and what it carries
The Aden-Djibouti cable was likely constructed to enhance regional connectivity between Yemen and Djibouti, providing a direct route for telecommunications traffic. Its strategic location links the Arabian Peninsula to the Horn of Africa, facilitating both intra-regional and international communications. While specific data on its capacity and traffic is unavailable, the cable most likely handles voice, data, and internet traffic for the region.
History: what can be established
GeoCables records indicate that the Aden-Djibouti cable became ready for service in 1994. Publicly available industry sources do not appear to contest this date, nor do they provide alternative timelines. The cable's ownership by five operators suggests it was built as a consortium project, a common practice in the submarine cable industry to share costs and risks.
Its continued operation after nearly three decades indicates either regular maintenance or upgrades, though no specific documentation on modernization efforts is publicly available.
Capacity and technology
The design capacity, number of fiber pairs, supplier, and specific technology of the Aden-Djibouti cable are not disclosed in public records. Without operator documentation, attributing these details would be speculative. Given its age, the cable's original capacity is likely modest by modern standards, but it may have been upgraded over time to accommodate increased traffic.
Latency: the physics
The theoretical one-way light propagation latency over the cable's 269-kilometer length is approximately 1.3 milliseconds, with a round-trip time (RTT) floor of 2.6 milliseconds. However, real-world latency is higher due to additional factors such as land-based network segments, terminal equipment, and routing.
Live measurements from GeoCables' remote probes show significantly higher RTTs for internet traffic involving Aden. For example:
- Djibouti City to Aden: Minimum RTT of 74.8 ms, average RTT of 121.2 ms.
- Sydney to Aden: Minimum RTT of 244.6 ms, average RTT of 248.7 ms.
- Singapore to Aden: Minimum RTT of 151.4 ms, average RTT of 152.0 ms.
These figures reflect the full internet path, not the cable itself, and include delays from routing inefficiencies and intermediate network hops.
Redundancy: what happens if it breaks
In the event of a failure, the Aden-Djibouti corridor has redundancy through the Asia Africa Europe-1 (AAE-1) cable, which also lands at both Aden and Djibouti City. Additionally, Djibouti City's dense cable connectivity provides further alternative routes for regional and international traffic. Repairing a submarine cable typically involves deploying specialized cable ships to locate and fix the fault, a process that can take days to weeks depending on the nature of the damage and environmental conditions.
Bottom line
- The Aden-Djibouti cable is a 269-kilometer regional system linking Yemen and Djibouti.
- Operational since 1994, its design capacity and technological specifics are not publicly disclosed.
- It serves as a direct route for telecommunications traffic in a corridor with multiple alternative cables.
- Latency measurements highlight the gap between theoretical and real-world performance, reflecting broader network dynamics.
- Redundancy is available via Asia Africa Europe-1 (AAE-1) and other cables landing in Djibouti City.