Balalink: A Submarine Cable Connecting Palma and Valencia
Balalink is a submarine telecommunications cable linking Palma, on the island of Mallorca, to Valencia on the Spanish mainland. The cable spans a distance of 274 km and is owned by IslaLink, a Spanish operator specializing in submarine cable infrastructure. Listed as in service, Balalink has been operational since 2001, according to GeoCables records. However, its design capacity, fiber pair count, supplier, and specific technological details have not been disclosed in publicly available sources.
What stands out about Balalink is its relatively short length, which serves a regional connectivity purpose rather than intercontinental data transmission. Despite its limited geographical reach, it plays an important role in linking Mallorca to mainland Spain, providing redundancy and capacity for telecommunications in the region. Public information about its technical specifications and operational performance remains sparse, leaving certain aspects of the cable's capabilities open to speculation.
Quick facts
| Name | Balalink |
| Length | 274 km |
| Ready for Service (RFS) | 2001 (GeoCables database) |
| Owner | IslaLink |
| Status | In service |
| Design Capacity | Not disclosed |
| Fiber Pairs | Not disclosed |
| Supplier | Not disclosed |
| Technology | Not disclosed |
| Landing Points | Palma (Spain); Valencia (Spain) |
| Other Cables at Valencia | Oran-Valencia (ORVAL), Penbal-4 |
Route
Balalink connects two strategic locations in Spain: Palma, the capital of Mallorca, and Valencia, a major city on the eastern coast of the mainland. Mallorca is part of the Balearic Islands, a popular tourist destination and an important economic hub in the Mediterranean. Valencia, on the other hand, is a key urban center with significant industrial and technological activities. The cable's route traverses the Mediterranean Sea, providing direct connectivity between the island and the mainland.
Why it was built and what it carries
Balalink was built to enhance telecommunications infrastructure between Mallorca and mainland Spain. The cable supports data, voice, and internet traffic, facilitating connectivity for residents, businesses, and tourists in the region. Its role is particularly significant for Mallorca, an island that relies heavily on external links for communication and economic activities. While specific traffic volumes or usage patterns are not publicly disclosed, Balalink likely serves as a critical asset for regional connectivity.
History: what can be established
According to the GeoCables database, Balalink became ready for service in 2001. Publicly available records do not indicate any discrepancies regarding this date, nor do they provide detailed information about the cable's construction or commissioning process. IslaLink, the cable's owner, has a history of operating regional submarine cables in Spain, but specific milestones or challenges related to Balalink's development are not documented in accessible sources.
Capacity and technology
The design capacity of Balalink is not disclosed in public records, nor are details about its fiber pair count, supplier, or underlying technology. Without operator documentation, it is impossible to state its maximum data transmission capabilities or the specific equipment used. Given its regional scope, Balalink is unlikely to rival larger intercontinental cables in capacity, but it is presumed to be sufficient for the needs of Mallorca and Valencia.
Latency: the physics
The theoretical one-way light propagation time over Balalink's 274 km length is approximately 1.3 milliseconds, with a round-trip time (RTT) floor of 2.7 milliseconds. These calculations assume light travels through fiber at speeds between 200,000 and 204,000 km/s. However, real-world latency would be higher due to additional factors such as land tails, terminal equipment, and routing inefficiencies. No live measurements of end-to-end latency for Balalink are currently available, making it impossible to verify its actual performance.
Redundancy: what happens if it breaks
If Balalink were to experience a fault, alternative cables at Valencia, such as Oran-Valencia (ORVAL) and Penbal-4, could potentially provide redundancy. However, these cables serve different routes and may not fully compensate for the loss of direct connectivity between Palma and Valencia. Repairing submarine cables typically involves specialized vessels and equipment, and the timeline for restoration depends on factors such as the nature of the fault and weather conditions. Industry practice generally prioritizes minimizing downtime for active cables like Balalink.
Bottom line
- Balalink is a 274 km submarine cable connecting Palma and Valencia in Spain.
- Owned by IslaLink, it has been in service since 2001, according to GeoCables records.
- Design capacity, fiber pairs, supplier, and technology are not publicly disclosed.
- Theoretical latency for the wet segment is approximately 2.7 ms round-trip, but real-world performance is higher.
- Alternative cables at Valencia include Oran-Valencia (ORVAL) and Penbal-4, though redundancy for Palma remains uncertain.