Nearly everything New Zealanders do online travels down a handful of thin cables lying on the seabed. A video call with family overseas, a bank transfer, a streamed film or a routine work email all leave and arrive the same way, with about 99 percent of the country’s data carried by submarine cables. On Wednesday the government switched on a new system built to keep those cables safe from the boats passing overhead.
Associate Transport Minister James Meager launched the National Surveillance and Warning Capability at the Maritime Operations Centre in Wellington, calling it a world first. The round the clock platform tracks vessel movements near the country’s undersea cables and raises an alert the moment a ship strays close enough to cause harm. When that happens, staff can contact the crew directly to warn them of the danger and remind them of their legal obligations inside a cable protection zone.
The risk is more ordinary than most people assume. The cables most likely to be hit are not the deep ocean lines far from shore but the ones in shallow water under 200 metres, where they run close to busy fishing grounds and shipping lanes near the coast. A dragging anchor or a trawl net catching the seabed is enough to do real damage.
“Even minor contact from fishing gear or anchors can compromise a cable’s protective outer layer,” Meager said in a statement released by the Beehive. “When this occurs, there is a real risk of widespread digital disruption, with significant impacts for businesses, communities and the wider economy.”
The system was built by the state owned communications company Kordia and the Wellington firm Starboard Maritime Intelligence, working alongside the government. It grew out of a trial run last year in the Hauraki Gulf and the Muriwai cable areas, which proved the idea worked well enough to take nationwide. Both companies have since been awarded contracts to deliver the same capability in European waters, a rare example of New Zealand technology being exported to bigger markets soon after it was first used at home.
Funding has been structured so the cost does not fall on the public. The development work was paid for through a Budget 2024 investment, while the ongoing 24 hour surveillance is funded by the companies that own the cables rather than the taxpayer. The launch is one of ten separate workstreams the government says it is running to improve the security and resilience of critical underwater infrastructure.
The push has been building for a while. When Starboard ran its trial late in 2025, chief executive Trent Fulcher told RNZ that New Zealand had “zero visibility” of what was happening around its underwater infrastructure. The trial picked up numerous cases of vessels, mostly fishing boats, drifting into restricted zones around the points where cables come ashore. Fulcher also pointed to a wider pattern overseas, saying his firm had observed activity in New Zealand waters that resembled the state linked behaviour seen near cables in the North Sea and the South China Sea, while stressing that no actual act of sabotage had occurred here.
That international backdrop is hard to ignore. Damage to undersea cables has moved up the security agenda across the world over the past two years, with a string of incidents in the Baltic Sea blamed on anchors being dragged across the seabed, sometimes by ships linked to sanctioned countries. New Zealand sits a long way from those tensions, but it is also unusually exposed, because a remote island nation that loses its cables has no land border to fall back on. A serious cut could slow or knock out internet and phone services for large parts of the country at once.
For most people the new system will be invisible, which is rather the point. If it works as intended, the warning calls to wandering vessels will quietly prevent the kind of accident that would otherwise make headlines only after the connection had already dropped. It is a reminder of how much of modern life now rests on infrastructure almost nobody sees. Readers curious about where these cables actually run, and how the rest of the country’s digital backbone is laid out, can explore Newswire’s interactive map of how New Zealand connects to the world.
The announcement lands in an election year, with the country heading to the polls on 7 November, and questions of national resilience, infrastructure and who pays for them are likely to feature in the campaign. If you want to see where the parties stand on issues like these before you cast your vote, our voting tool lets you compare their positions side by side.
What do you think of the new monitoring system, and how worried should New Zealand be about the safety of its undersea cables? Share your thoughts in the comments below.
This article was written by AI, briefed to report the facts, hopefully without some of the bias people bring to the job 🙂
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