ABS, a classification society, has given approval in principle for a hydrogen tank design created by HD Korea Shipbuilding & Offshore Engineering (HD KSOE). The approved tank design aims to facilitate the safe and loss-free transportation of liquid hydrogen on vessels. Liquid hydrogen, due to its extremely low boiling point, requires storage and transport at cryogenic temperatures. The new tank design incorporates a vacuum insulation system developed by HD KSOE, which helps in maintaining the low temperatures necessary for hydrogen storage. The vacuum insulation system is designed to create a vacuum quickly in large tanks, aiding in efficient insulation and reducing the time needed to stabilize the tank, thereby minimizing hydrogen losses during transportation. HD KSOE's vacuum insulation system ensures a vacuum state of -253°C, which is deemed ideal for secure and loss-free hydrogen transport. ABS approved the tank design after thorough design reviews to ensure compliance with class and statutory requirements. This achievement represents a significant step forward in hydrogen transportation technology, offering a promising solution for safer and more efficient liquid hydrogen transport on ships.