What are the basic requirements of the BWM Convention relating to approval of ballast water treatment systems?

Every treatment system must be type approved by the flag State Administration. Also, if the system makes use of an “active substance”, (any substance or organism that has a general or specific action on or against harmful aquatic organisms or pathogens) an additional approval procedure must be followed, with approval granted exclusively by IMO.

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What information must a Ballast Water Record Book contain?

What ballast water treatment technologies are currently used to achieve the D-2 Performance Standard?