San Domino, Italy

San Domino, Italy: Submarine Cable Landing Point

San Domino is the largest island of the Tremiti Islands, an archipelago located in the Adriatic Sea approximately 16 kilometres north of the Gargano Peninsula, in the Province of Foggia, Apulia. The island forms part of the Gargano national park and belongs to an archipelago composed of five islands. As an island location, San Domino relies on submarine cable infrastructure to maintain connectivity with the Italian mainland and other points along the cable route.

One submarine cable lands at San Domino, connecting it within an Italian domestic corridor. That cable is Piano Isole Minori, a system designed to serve Italy's smaller islands. Its landing here reflects the role San Domino plays as a node within Italy's intra-national island connectivity framework, linking outlying island communities to broader terrestrial networks.

Cables Landing at San Domino

Piano Isole Minori is an 830-kilometre submarine cable system with a planned ready-for-service date of 2024, currently at draft status. The cable connects multiple Italian landing points, with all endpoints located within Italy. With a total length of 830 kilometres, it represents a domestic system intended to extend submarine connectivity to Italy's minor islands, of which San Domino and the wider Tremiti Islands are a part. The cable does not extend beyond Italian territory, making it an intra-national rather than intercontinental or cross-border system.

Regional Context

Within Italy's submarine cable landscape, San Domino hosts a single cable landing, placing it among the smaller landing points in a national network that spans 37 submarine cables across 55 landing points. Major Italian hubs such as Mazara del Vallo, with nine cables, and Genoa, with seven cables, handle considerably greater cable traffic, while mid-tier points like Catania and Bari serve four to five systems. San Domino's role is more focused, serving the specific connectivity needs of the Tremiti Islands rather than acting as a gateway for international or high-volume traffic.

Network Role

San Domino functions as a single-cable terminus on the Piano Isole Minori system, a domestic Italian cable designed to bring submarine connectivity to the country's minor islands. Its position in the Adriatic Sea, some distance from the Italian mainland, makes submarine cabling the practical means of delivering network access to the island. The cable corridor served here is entirely intra-Italian, linking San Domino to other domestic landing points rather than to foreign networks.

As a terminus on a dedicated island connectivity cable rather than a transit point on a longer international route, San Domino occupies a specialised position in Italy's submarine cable graph — one oriented toward geographic inclusion of remote island communities within the national network.