engleski

Analysis of Ballast Water Discharged in the Port According to Origin and Ship Details (Case Study)

Ballast water plays an important role in the transmission of Harmful Aquatic Organisms and Pathogens (HAOP) that negatively impact the environment, human health, and coastal economies. Therefore, in 2004, the International Maritime Organization (IMO) adopted the International Convention for the Control and Management of Ship's Ballast Water and Sediments (BWM Convention). The BWM Convention introduced the Ballast Water Exchange Standard (Regulation D-1) and the Ballast Water Performance Standard (Regulation D-2). As a result, ships are required to install a ballast water treatment system (BWTS) as this is the most effective solution to comply with Regulation D-2. However, the deadline for installing BWTS has been extended to September 2024, and many ships still only comply with Regulation D-1. In addition, there are certain sea areas where ships cannot comply with Regulation D- 1 (insufficient distance from land and sea depth), which increases the possibility of HAOP transfer between ports. Therefore, it is important to develop a management and control system to protect coastal areas from the introduction of HAOP. In this paper, the ballast water discharged in the Port of Ploče (Croatia) is analysed by ship type, size, age and flag. Moreover, the discharged ballast water was analysed according to its origin and it was found that 70% of the discharged ballast originates from the Adriatic Sea, but still poses a significant threat to the environment. Based on the results of the analysis, the paper proposes measures to reduce pollution from discharged ballast water.

ballast water ; maritime transport ; pollution ; ballast water treatment

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