Tonga Long-Distance Cable Tray

Tonga's long-distance connectivity relies on the Tonga Cable linking Tonga to Fiji and the newly landed Hawaiki Tonga subsea cable, providing international internet access and network resilience.Tonga Cable OverviewThe Tonga Cable System is an 827-kilometer submarine fiber-optic cable connecting Sopu, Nukuʻalofa in Tonga to Suva, Fiji, where it links to broader international networks . Commissioned in August 2013, it was designed with two fiber pairs and initially supported low tens of gigabits per second, sufficient for Tonga's national traffic at the time . Over the years, optical upgrades have increased its practical capacity without altering the physical cable . The cable is owned and operated by Tonga Cable Limited, a joint venture between the Government of Tonga, Tonga Communications Corporation, and Digicel Tonga, with funding support from the Asian Development Bank and the World Bank .Domestic ExtensionIn 2018, the Tonga Cable was extended with a 410-kilometer domestic inter-island segment, known as the Tonga Domestic Cable Extension (TDCE), connecting Tongatapu to the outer islands of Haʻapai and Vavaʻu . This extension improved inter-island connectivity but remained vulnerable to natural disasters.Historical DisruptionsThe Tonga Cable has experienced several major outages:January 2019: Cable break disrupted internet services, temporarily relying on satellite communications .January 2022: The Hunga Tonga–Hunga Ha'apai volcanic eruption caused underwater density currents that severed the cable, disconnecting Tonga from the international internet for 38 days .2024: The TDCE sustained further damage following an earthquake . Repairs often require specialist ships deployed from distant locations, such as Port Moresby, Papua New Guinea, and can take weeks to restore service .Hawaiki Tonga Subsea CableTo enhance resilience, Tonga has recently landed the Hawaiki Tonga subsea cable in Vava'u, connecting the country directly to a transpacific backbone linking Australia, New Zealand, Hawaii, and the U.S. West Coast, with branches to American Samoa and New Caledonia . Launched in June 2024, this 383-kilometer cable is expected to improve service reliability, expand international bandwidth, and reduce Tonga's dependence on a single point of failure . The project was funded by Australia and New Zealand and delivered in partnership with BW Digital and Tonga Cable Limited .SignificanceTonga's long-distance cable infrastructure is critical for:International internet access for a population of roughly 105,000 across 150+ islands .Economic development, as broadband connectivity is a prerequisite for digital services and commerce .Network resilience, with the Hawaiki Tonga cable providing redundancy against natural disasters . The combination of the original Tonga Cable, its domestic extension, and the new Hawaiki Tonga cable represents a strategic effort to secure reliable, high-capacity connectivity for the nation.