May. 3 2021 Home Class & statutory Ballast Water Management Systems LinkedIn Twitter Facebook share Convention BWM Ballast Water Management Flag ALL FLAGS Ship typeAll Sea going Ship types Statutory type approval BWMS manufacturers and shipowners should be aware that several Flag State Administrations require that any BWMS installed on board ships flying their flag is issued with an IMO type approval by or on behalf of the ship’s flag state Administration. Bureau Veritas is providing such certification services on behalf of Flag States. Contact Bureau Veritas Equipment and Materials Certification department to know more.