GO-1 Mediterranean Cable System: Connecting Malta and Italy
The GO-1 Mediterranean Cable System is a submarine fiber-optic cable linking
Mazara del Vallo in Italy to
St. Paul's Bay in Malta. Spanning approximately 290 kilometers, it is owned and operated by GO plc, a telecommunications provider based in Malta. The cable has been listed as in service since 2008, according to GeoCables database records. However, details about its design capacity, fiber pair count, supplier, and specific technology have not been disclosed publicly.
What makes the GO-1 system noteworthy is its role in connecting Malta to mainland Europe, providing critical international connectivity for the island nation. Despite its relatively short length, the cable is part of a larger network of submarine systems landing at Mazara del Vallo, a hub for multiple cables traversing the Mediterranean region. This clustering underscores the strategic importance of Mazara del Vallo as a landing point for international data traffic.
Quick facts
| Name | GO-1 Mediterranean Cable System |
| Length | 290 km |
| Ready for Service | 2008 (GeoCables database; conflicting dates not identified) |
| Owner | GO plc |
| Status | In service |
| Design Capacity | Not disclosed |
| Fiber Pairs | Not disclosed |
| Supplier | Not disclosed |
| Technology | Not disclosed |
| Landing Points | Mazara del Vallo (Italy); St. Paul's Bay (Malta) |
Route
The GO-1 Mediterranean Cable System connects Mazara del Vallo, a coastal town in Sicily, Italy, to St. Paul's Bay, a northern locality in Malta. Mazara del Vallo is a significant landing site for submarine cables in the Mediterranean, hosting systems such as
Didon,
HANNIBAL System,
Janna,
Medusa Submarine Cable System, and others. This concentration of cables highlights the town's importance as a regional telecommunications hub. St. Paul's Bay, on the other hand, serves as a key gateway for Malta's international connectivity, linking the island to Europe and beyond.
Why it was built and what it carries
The GO-1 cable was built to enhance Malta's international telecommunications infrastructure, providing reliable connectivity to mainland Europe. As a relatively short cable, it primarily facilitates data traffic between Malta and Italy, serving as a critical link for internet, voice, and other digital services. Its construction reflects Malta's growing demand for strong international connectivity, driven by its economic development and reliance on digital services.
History: what can be established
The GeoCables database lists the GO-1 Mediterranean Cable System as ready for service in 2008. No conflicting dates have been identified in industry sources, so this year is considered reliable. Publicly available information about the cable's development, construction timeline, or supplier is limited, which is not uncommon for smaller regional systems.
Capacity and technology
Details about the GO-1 cable's design capacity, fiber pair count, and underlying technology have not been disclosed in public sources. Without operator documentation, it is impossible to state its maximum throughput or specific technical features. The lack of transparency is typical for smaller cables, especially those serving regional markets rather than global corridors.
Latency: the physics
Theoretical one-way light propagation over the 290 km wet segment of the GO-1 cable is approximately 1.4 milliseconds, with a round-trip time (RTT) floor of 2.8 milliseconds. However, real-world latency measurements are significantly higher due to additional factors such as land tails, terminal equipment, and routing inefficiencies. Remote probes measuring the full internet path (not the cable itself) report a minimum RTT of 53.5 milliseconds and an average of 72.2 milliseconds from Mazara del Vallo to St. Paul's Bay. In the reverse direction, the minimum RTT is 39.9 milliseconds, with an average of 50.7 milliseconds. These figures reflect the broader network environment rather than the cable's intrinsic latency.
Redundancy: what happens if it breaks
If the GO-1 cable were to experience a fault, redundancy would be provided by other submarine cables landing at Mazara del Vallo, such as Didon, HANNIBAL System, Janna, and others. These systems collectively ensure that Malta's connectivity to mainland Europe remains operational. Repairing submarine cables typically involves deploying specialized ships equipped with cable-laying and recovery tools. The repair process can take days to weeks, depending on the nature of the fault and weather conditions.
Bottom line
- The GO-1 Mediterranean Cable System connects Mazara del Vallo, Italy, to St. Paul's Bay, Malta, spanning 290 km.
- It has been in service since 2008, according to GeoCables records.
- Owned by GO plc, the cable plays a key role in Malta's international connectivity.
- Details about its design capacity, fiber pairs, supplier, and technology are not publicly disclosed.
- Theoretical latency is ≈2.8 ms RTT over the wet segment, but real-world measurements are much higher due to network factors.
- Redundancy is provided by other submarine cables landing at Mazara del Vallo.