What is Dilution Method of Ballast Water Exchange and factors taken into account?

  1. Arrangements are to be made to automatically maintain the ballast water level in the tanks at a constant level.
  2. High and low water level alarms are to be provided where maintaining a constant level in a tank or hold is essential to the operational efficiency of the vessel during the ballast water exchange.
  3. The arrangements are to include the provision of a manual emergency stop for any operating ballast pump in case of valve malfunction or incorrect control actions.

As with all methods, the Ballast Water Reporting Form provided in Appendix 1 is to be completed and transmitted to the next port where ballast water is discharged.

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