Ballast Water Risk Assessment For The Ship On The Voyage From Incheon To Dalian

To ensure safe navigation, nearly all ships have to carry ballast water. But the discharge of the ballast water gives rise to the introduction of invasive marine species into new environments. This introduction of invasive marine species has caused the serious environmental and economic problems.To reduce the hazard of ballast water,IMO adopted the International Convention for the Control and Management of Ships'Ballast Water and Sediments to manage ballast water and further control the introduction and spreading of aquatic invasive species in areas where they are not found naturally. These managements include ballast water exchange, ballast water disposal or implements scientifically robust ballast water risk assessment for exemptions to be granted to a ship or ships on a voyage or voyages between specified ports or locations.Based on this, the Species Specific Ballast Water Risk Assessment Program was developed in this study under the framework of Guidelines for Risk Assessment Under Regulation A-4 of the Ballast Water Management Convention. And the ballast water risk assessment of Da-In ferry which is only navigating between Incheon and Dalian was finished taking advantage of this program.Primarily, the data information used for assessment was collected and arranged in the environment, ballast and target species databases and the function models of each assessmet level were designed. The assessment program was finished with the help of call function of Visual Basic.Then, the target species and specified ship were selected for ballast water risk assessment. The risk probability of the ballast water transferred form Incheon to Dalian was concluded and this conclusion was contrastively analyzed with actual survey.At last, the data updating plan and the function updating models were developed to facilitate the improvement of databases and program.The results show that ballast water discharge control should be performed in July, September and October and ballast water management exemptions can be granted to ships on the voyage form Incheon to Dalian in other months.