360atlantic (Hibernia Atlantic)

Overview

360atlantic — operated under its earlier identity as Hibernia Atlantic — is a transatlantic submarine cable system connecting North America to the British Isles. The system lands at Herring Cove in Nova Scotia and Lynn in Massachusetts on the western side of the Atlantic, with eastern terminals at Dublin in the Republic of Ireland, Coleraine in Northern Ireland, and two English landing points at Southport and Brean.

Route and Connectivity

The cable's landing configuration gives it a notably broad footprint across the British Isles. By terminating separately in Ireland, Northern Ireland and England, the system provides diverse onward connectivity into distinct national networks rather than funnelling traffic through a single UK gateway. This structure has made it attractive to carriers and enterprises seeking path redundancy across the region. The Nova Scotia landing at Herring Cove positions the system to serve Canadian traffic directly, while the Massachusetts terminus at Lynn provides a well-established entry point into the northeastern United States.

Capacity and Ownership

The system carries a design capacity of 10.16 Tbit/s. Ownership sits with GTT Communications, a provider specialising in cloud networking and wide-area network services for multinational enterprises and carriers. GTT's acquisition of the asset reflected broader consolidation in the transatlantic cable sector, where network operators have moved to secure owned infrastructure alongside leased capacity.

Regional Context

The North Atlantic corridor is among the most heavily trafficked submarine cable routes in the world, carrying a substantial share of traffic between North America and Europe. 360atlantic occupies a distinct position within that mix through its combination of Canadian, US and multi-point British Isles landings, offering route diversity that single-destination transatlantic systems cannot match. Its continued active status underlines the enduring value of the physical infrastructure underpinning transatlantic connectivity.