With the process of industry productions, the polar region which is the last maiden land for human being on the earth is confronted to the environment pollution increasingly. In accordance with the development of green shipbuilding technologies in the world, the ballast system of a science icebreaker should be researched and designed particularly because the International Maritime Organization (IMO) has developed international legislation, the International Convention for the Control and Management of ships' ballast water and sediments, to regulate discharges of ballast water and reduce the risk of introducing non-native species from ship s' ballast water. Not only the scientific research icebreaker is ensured to work normally in the polar region, but also the weak ocean environment is protected.
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