COSCO Blue Ocean Shield (hereinafter referred to as BOS) ballast water treatment system is a ship’s ballast water treatment system designed and manufactured as the requirements of International
Convention for the Control and Management of Ship’s Ballast Water
and Sediments, 2004, with the aim to prevent, minimize and ultimately eliminate the risks to the environment, human health, property and
resources arising from the transfer of harmful aquatic organisms and pathogens through the control and management of ship’s ballast water
and sediments.