Technology is making the Pacific’s drug highway harder to detect

https://www.lowyinstitute.org/the-interpreter/technology-making-pacific-s-drug-highway-harder-detect

Publish Date: 2026-05-07 00:04:00

In the global narcotics trade, transnational criminal networks are consolidating their hold on the Pacific drug highway. Technology is enabling these networks to adapt and refine tactics to evade detection in the region, resulting in a trafficking system that is distributed and resilient. The approach is less about the protection of individual shipments than ensuring the redundancy of the system as a whole.

The repeated discovery of “narco-subs” in Pacific waters is an example of this evolution. These semi-submersible vessels have been discovered in Solomon Islands, Tonga and Fiji in the past two years – a shift in deploying capabilities once confined to Eastern Pacific cocaine routes. The use of these boats for drug smuggling to Australia and New Zealand via a route exceeding 6,500 kilometres is challenging for the island nations of the Pacific, where surveillance coverage is uneven and interdiction capacity remains limited.

Semi-submersibles might represent the most visible form of innovation, but the more consequential development lies in the widespread adoption of low-profile vessels, particularly the very slender vessel (VSV). These craft achieve stealth not through submersion, but through hydrodynamic efficiency. Long, narrow hulls – often exceeding 15 metres in length while remaining under two metres in beam – allow them to cut through waves with minimal wake and reduced visual signature. By the mid-2020s, VSVs had become the dominant trafficking platform along established cocaine routes. They are cheaper to construct, faster to deploy, and capable of maintaining speeds that complicate interception even when detected.

In the Pacific, these characteristics are amplified. Limited radar coverage beyond coastal areas, constrained maritime patrol capacity, and vast exclusive economic zones create conditions in which these vessels can operate with relative freedom. These conditions enable rendezvous operations at sea, staggered transfers (known as…

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