European navies test new drone tech for undersea operations
September 29, 2025
SESIMBRA, Portugal — An hour from Portugal’s capital, Lisbon, on a clear sunny day in late September, a large, penguin-like robot peeks above the sea surface. It circles a Portuguese Navy ship from a distance, hardly visible to the human eye, concealed by the deep blue waters of the Atlantic ocean.
The system is the Greyshark from Germany’s EuroAtlas, an autonomous underwater vehicle…