Unified Interpretation Relating to the International Ballast Water Management Convention The Directorate wishes to draw the attention of all concerned to the Unified Interpretation BWM.2/Circ.66/Rev.2 issued on 13 December 2021. For more information, please read the Merchant Shipping Commercial Yachting Technical Notice BWM.4 by clicking here. Should you have any questions concerning this or other matters, please contact Jotham Scerri-Diacono or any other member of the shipping team at Ganado Advocates. Go back