Cosma was contracted by Pennavel to complete the environmental assessment studies within the planned installation area of the Pennavel 1 floating offshore wind farm. Over several weeks, underwater drones surveyed 45 km² using a methodology validated by the Conseil Scientifique de Façade – NAMO (CSF). The campaign covered more than 140 km of video transects in a site located 10 to 15 nautical miles offshore, at depths of 90–100 meters, and resulted in the acquisition of 380,000 high-resolution, georeferenced images to refine knowledge of the marine environment.

This data was then analyzed by Cosma experts supported by an AI-based automated detection algorithm trained on manually annotated datasets, enabling an updated inventory of seabed habitats and benthic fauna.

This first offshore project for Cosma illustrates the company’s ability to operate in demanding offshore conditions, including rough weather, while delivering scalable, high-resolution data acquisition and processing. By combining lightweight autonomous robotics with artificial intelligence, Cosma addressed the technological challenge of efficiently surveying a deep, remote site and provided actionable insights to support both scientific knowledge and responsible offshore renewable energy development.