Japanese classification society ClassNK has published a new edition of its Guidelines for Ships Using Alternative Fuels, which outline the safety requirements for ships using methanol, ethanol, LPG and ammonia as fuel. The new release adds requirements related to hydrogen-fueled ships, providing guidance for the design of alternative-fueled ships.

According to ClassNK, the guidelines stipulate requirements for installation, controls, safety devices, etc., aiming to minimize the risks to ships, seafarers and the environment posed by the use of alternative fuels.