ClassNK, based in Tokyo, has announced the release of the 'Guidelines for Ships Using Alternative Fuels (Edition 3.0)', which now includes requirements for ships using hydrogen as fuel. These guidelines, in addition to covering safety measures for methanol, ethanol, LPG, and ammonia-fueled ships, provide essential guidance for the design of ships utilizing alternative fuels. The aim is to minimize risks to ships, seafarers, and the environment associated with the use of such fuels. The latest edition incorporates provisions from ClassNK's rules and the IGF Code, with newly established requirements specific to the physical properties and hazards associated with hydrogen fuel. These additional safety measures include considerations for preventing explosions and addressing the impact of hydrogen fuel leakage on seafarers and the environment. The guidelines are part of ClassNK's efforts to support a smooth transition to zero-emission ships and are accessible for download on their website after registration. Through their Transition Support Services, ClassNK reaffirms its commitment to aiding the maritime industry in adopting alternative fuels for a more sustainable future.