The developer of the world’s first zero-emission hydrogen-powered autonomous ship has received approval in principle for its systems in the same month that the Mayflower autonomous surface ship (MASS) just about made it across the Atlantic.

Lloyd’s Register (LR) has granted approval in principle for UK-based Acua Ocean’s hydrogen, control engineering and electrical power distribution systems.

Acua Ocean has also unveiled its new H-USV design developed by naval architect and SWATH designer John Kecsmar of Ad Hoc Marine Designs powered by 6,000 litres of liquid hydrogen.