After past damage to undersea cables, Denmark will boost their surveillance of Baltic Sea/North Sea waters by deploying four uncrewed surface vessels — about 10 meters long — that are equipped with drones and also AI, [1]reports Euronews .

The founder/CEO of the company that makes the vessels — Saildrone — says they'll work "like a truck" that "carries the sensors." And then "we use on-board sophisticated machine learning and AI to fuse that data to give us a full picture of what's above and below the surface."

> Powered by solar and wind energy, they can operate autonomously for months at sea. [Saildrone] said the autonomous sailboats can support operations such as illegal fishing detection, border enforcement, and strategic asset protection... The four "Voyagers" will be first in operation for a three-month trial, as Denmark and NATO allies aim at extending maritime presence, especially around critical undersea infrastructure such as fibre optic cables and power lines. NATO and its allies have increased sea patrolling following several incidents.



[1] https://www.euronews.com/next/2025/06/25/this-crewless-ship-is-defending-denmarks-and-natos-waters-this-is-how-it-works