Hawaiki Cable: New Zealand and Australia's Pacific Lifeline

Hawaiki Cable: New Zealand and Australia's Pacific Lifeline

Cable profile based on GeoCables monitoring data — 24 health checks recorded Named after the mythical Polynesian homeland, Hawaiki is a 15,000km transpacific submarine cable that opened in 2018, providing crucial redundancy for New Zealand and Australia's international internet connections. It connects the US West Coast (Oregon) to Sydney and Auckland via Hawaii and American Samoa — serving some of the world's most geographically isolated internet users.

The Route

Oregon (Nedonna Beach, US) → Hawaii (Oahu) → American Samoa (Tutuila) → Tonga (Nuku'alofa) → New Zealand (Mangawhai Heads) → Australia (Sydney) Total length: 15,000km across open Pacific Ocean. The cable also includes a New Caledonia branch, and a branch to Kiribati was discussed but not built.

Why Hawaiki Was Built

Before Hawaiki, New Zealand's international internet depended almost entirely on Southern Cross Cable (also US–Hawaii–Fiji–NZ/Australia). A single fault on Southern Cross — which has happened multiple times — could degrade New Zealand's international connectivity by 50% or more. Hawaiki provided: - Route diversity: a second physically separate cable to the US - Capacity: 30+ Tbps design capacity (vs Southern Cross's older, lower capacity) - American Samoa: for the first time giving American Samoa a high-capacity cable - Tonga: additional international connectivity for a Pacific island nation with limited options

The Tonga Volcanic Eruption Test

In January 2022, the Hunga Tonga-Hunga Ha'apai volcanic eruption severed Tonga's submarine cable connection entirely, leaving the island nation dependent on satellite for weeks. Hawaiki's Tonga branch was damaged in the eruption. This event highlighted the extreme vulnerability of small island nations that depend on a single submarine cable landing. When that cable fails — whether from volcanic activity, fishing anchors, or ship anchors — the entire nation loses international internet connectivity.

Pacific Island Connectivity: The Last Frontier

The Pacific Islands represent the most challenging connectivity environment on Earth: - Enormous distances between small population centers - Limited economic justification for expensive cable systems - Seismic and volcanic activity threatening cable integrity - Climate change raising sea levels and threatening shore-end infrastructure Hawaiki partially addressed this for American Samoa and Tonga, but dozens of Pacific island nations remain dependent on single cables or expensive satellite links.

GeoCables Monitoring: 24 Health Checks

Our 24 health checks on Hawaiki focus on the key Oregon–New Zealand trunk: - Oregon → Hawaii: ~70ms (4,200km) - Hawaii → Auckland: ~100ms (7,100km) - Total Oregon → Auckland: ~170ms theoretical minimum This compares favorably to the Belarus → New Zealand route in our database (311ms via Moscow), confirming that direct Pacific routing is significantly more efficient than Eurasian transit.

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GeoCables monitors Hawaiki cable with 24 health checks. View status →