Coastal surveillance: New Zealand
New Zealand's two long main islands and their outlying groups present a coastline of deep fjords, exposed capes and remote southern shores fronting some of the roughest seas anywhere. Between the coastal radar stations lie gaps where the terrain itself hides an approach, and the far reaches of the maritime zone extend well beyond what any shore-based sensor can see.
A rugged coast with more gaps than coverage
New Zealand's coastal defences reach only so far from the stations that host them, and along a shore of fjords, headlands and remote southern coast the gaps between coverage are pronounced and predictable. Conventional coastal radar sees to the horizon and below it, leaving the mid-water and the outer maritime zone effectively unwatched, while broken terrain masks approaches even close in. Each emitting station also tells an observer offshore exactly where its coverage begins and ends. The result is a coast that looks defended on a planning map yet is routinely transited in the seams the map does not show.
Extending the picture without advertising it
Building genuine coastal awareness for New Zealand means adding coverage where the radar chain is thinnest, the remote southern shore and the terrain-masked approaches, without telling anyone offshore where the new coverage sits. Passive sensing that exploits ambient signals adds low-observable coverage across those seams while emitting nothing an adversary or an evasive vessel can locate or jam, and satellite vessel detection extends the picture from the coast out toward the edge of the maritime zone so a contact can be followed from open water in to the shore. Because these capabilities come from independent, non-aligned makers, the coastal picture is tasked on New Zealand's own priorities and accountable to its maritime authority.
How engagement works in New Zealand
Unstrat engages as an independent, non-aligned prime vendor: one accountable team representing the manufacturers directly, with end-use certified equipment and in-region sustainment. A programme typically begins by closing the widest coverage gaps along the most exposed and terrain-masked stretches, then extends the picture seaward and links the sensors into a single coastal view. Localisation arrangements are scoped per programme and subject to export controls and end-use approvals, so the awareness New Zealand builds along its own coast stays operated by its own authorities.
Sequencing coverage along a rugged coast
Engagement begins with a working briefing alongside the maritime authority, mapping the fjords, capes and remote southern shore where terrain masks an approach and the outer zone lies beyond any station. Before any representation, export-control and end-use questions are settled, so what New Zealand fields is certified to its own use. Capability is then matched to the operator's real conditions (broken coastline, some of the roughest seas anywhere, stations that announce their own limits), rather than a stock fit, favouring passive sensing that adds coverage while emitting nothing offshore can locate, with satellite vessel detection reaching seaward. Sustainment is phased in-region so crews hold the picture themselves, with localisation arrangements scoped per programme and subject to export controls and end-use approvals. The advantage sought is to close the seams the radar chain leaves and protect a coast that only looks defended on a planning map.
Relevant capability
Adjacent priorities in New Zealand
New Zealand oversees a vast exclusive economic zone stretching across the Southern Ocean and out into the wider Pacific, waters far larger than its land and often days of steaming from the nearest patrol asset. Foreign vessels work the remote southern grounds where cutters rarely reach, go dark on cooperative tracking, and exploit the distance between the fishing grounds and any port where an offence can be proven.
Problem pagePiracy raises insurance costs, deters shipping and endangers seafarers. Space-based vessel monitoring, aerial patrol and hardened port and vessel systems let coastal states detect threats early and protect the shipping lanes their economies depend on.
Problem pagePorts concentrate national trade in a small, exposed footprint, vulnerable from the water, the air and the network. Inshore passive radar, vessel monitoring from orbit, counter-drone defence and maritime cyber protection secure the gateway end to end.
Problem pageRelevant solutions
New Zealand: security context
New Zealand's island setting shapes its priorities: maritime domain awareness across a vast surrounding ocean, protection of its exclusive economic zone and fisheries, surveillance across the wider Pacific, and readiness for disaster response. It is an environment where wide-area maritime awareness is central to security.
One accountable, non-aligned partner gives New Zealand a coherent counterpart for those priorities: maritime domain awareness, EEZ and fisheries protection, Pacific surveillance and disaster response. A defence ministry gains end-use certified equipment and localisation arrangements scoped per programme rather than promised in advance.
About this challenge
Coastal radar sees only so far, and gaps between stations are exploited daily. Passive radar that adds coverage without emitting, satellite vessel detection and satellite-data fisheries analytics extend the maritime picture from the beach to the edge of the EEZ.
Frequently asked questions
Why can't New Zealand's coastal radar cover the whole coast?
Coastal radar reaches only to the horizon, and along a shore of fjords, capes and remote southern coast the terrain masks approaches while the outer maritime zone stays out of reach entirely. Passive sensing and satellite vessel detection add coverage where the fixed chain is thinnest and extend the picture toward the edge of the zone.
How does passive sensing avoid giving away the new coverage?
Passive sensing detects and tracks vessels by exploiting ambient signals, so it emits nothing an evasive vessel or adversary can locate or jam. That lets New Zealand thicken its coastal picture across the terrain-masked seams without advertising where the new coverage sits.
Who controls New Zealand's coastal picture?
New Zealand's maritime authority does. The sensing capabilities come from independent, non-aligned makers, tasked on national priorities, with localisation arrangements scoped per programme and subject to export controls and end-use approvals. We would be glad to brief your team on sequencing coverage across the most exposed stretches first.