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Friday, September 10, 2021 

ClassNK says it is committed to providing comprehensive services to support the industry’s efforts for the transition to zero-emission of shipping business, and in support of measures for GHG emissions reduction, the Japanese classification society has released new 'Guidelines for Ships Using Alternative Fuels'.

The revised guidance updates the safety requirements for ships using ammonia as fuel in the previously issued Guidelines for Ships Using Low-Flashpoint Fuels covering LPG/Methanol/Ethanol, and provides comprehensive information on requirements for alternative fuel ships.

Ammonia has captured attention as a zero carbon fuel. Appropriate safety measures are required for ammonia as it is toxic to humans and corrosive to materials, while specific international standards for the use of ammonia as a marine fuel have not yet been established. ClassNK has described the requirements for installation, controls, and safety devices of an ammonia fuelled ship to minimise risks for the ship, crew, and the environment, and added this to the guidelines.

In addition, ClassNK has revised the existing 'LNG-Ready' notation to 'Alternative Fuel Ready', and outlined the requirements for the new notation indicating that a ship is designed and partially equipped for future use of alternative fuels.

The guidelines reflect current technology trends and will be updated regularly as new technologies and research emerge. The guidelines are available to download for registered users of ClassNK’s website.

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