by Euan Paterson Heralding a new zero-carbon era for ocean observations, a wave-propelled uncrewed surface vessel (USV) has for the first time successfully recovered scientific data from a sensor moored 1,800 metres deep in the Rockall Trough. The USV, deployed by SAMS and manufactured by AutoNaut in the UK, remotely collected data from the Sonardyne Fetch AZA bottom pressure recorders (BPRs), before sending it back to oceanographers on shore via satellite.