Coilleag, United Kingdom

Coilleag: Submarine Cable Landing Point

Coilleag is a submarine cable landing point located in the United Kingdom. As a coastal landing site, it forms part of the United Kingdom's domestic submarine cable infrastructure, connecting outlying communities via undersea links to the broader national network. One submarine cable currently lands at Coilleag: the BT Highlands and Islands Submarine Cable System.

The BT Highlands and Islands Submarine Cable System establishes an intra-national corridor, with all endpoints of the cable residing within the United Kingdom. This positions Coilleag as a node within a domestic inter-island or coastal connectivity framework rather than an intercontinental or cross-border route. The cable's focus on the Highlands and Islands region of the UK reflects the geographic challenge of delivering connectivity to communities separated from the mainland by water.

Cables Landing at Coilleag

BT Highlands and Islands Submarine Cable System is a 402-kilometre submarine cable with a ready-for-service date of 2014, currently listed in draft status. The cable connects points exclusively within the United Kingdom, serving the Highlands and Islands region. Coilleag represents one of the cable's landing points along this domestic route, which spans a total of 402 kilometres to link geographically dispersed communities across the Scottish island and coastal territories.

Regional Context

Within the United Kingdom, Coilleag is a single-cable landing point and sits at the more modest end of the country's submarine cable infrastructure compared to major landing hubs such as Bude, which serves seven cables, and Blackpool, Southport, and others hosting multiple international systems. Coilleag's role is domestic and regionally specific, oriented toward the connectivity needs of the Highlands and Islands rather than serving as a gateway for international traffic. This reflects the diversity of the United Kingdom's submarine cable geography, which ranges from high-capacity international exchange points to smaller, community-serving domestic links.

Network Role

Coilleag functions as a single-cable terminus within the BT Highlands and Islands Submarine Cable System, enabling domestic submarine connectivity within the United Kingdom. Its role is distinct from international-facing landing points in the country, as the cable it hosts does not cross national borders but instead addresses the challenge of reaching communities in geographically isolated parts of the UK via subsea infrastructure.

Within the regional submarine cable graph of the United Kingdom, Coilleag represents an endpoint serving domestic intra-national connectivity, demonstrating that submarine cable infrastructure extends beyond intercontinental routes to include shorter, nationally scoped systems that link island and coastal communities to the mainland network.