The revised international gas code requires the damage stability calculation of ballast conditions of the liquefied gas carriers definitely. This paper, aiming at the damage stability calculation in the initial ballast conditions, computed and researched 37,500m³ LEG carrier, which was the world's largest LEG carrier and researched by Jiangnan Shipyard (Group) Co., Ltd. independently. Through the research and calculations, we concluded the impacts of the revised IGC requirements on the damage stability. By adjusting the loading of ballast water, writers had improved the ballast conditions which did not satisfy the rules of the revised IGC to meet the new basic requirements. This study not only maintains the leading-edge technology of Jiangnan Shipyard in the liquefied gas carrier research and development, but also makes a good technical preparations for follow-up orders in the future.

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