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What are regulations regarding segregated ballast tanks as per MARPOL 73/78?

As per MARPOL 73/78 ,

Regulation 13A: Segregated Ballast Tanks

  • Every tanker of 20,000t deadweight and above shall be provided with segregated ballast tanks.
  • In no case shall ballast be carried in cargo tanks unless:
    • On rare voyages where weather conditions are so severe the master decides to do so for the safety of the ship
    • In exceptional cases where the particular charter of the ship requires it to carry more ballast than usually required.
  • Every tanker of 20,000t deadweight and above shall be equipped with a suitable crude oil washing system.

You may also know –

Regulation 13B: Dedicated clean ballast tanks                                                  

  • An oil tanker operating with dedicated clean ballast tanks shall have adequate tank capacity, dedicated solely to the carriage of clean ballast.
  • Any oil tanker equipped with dedicated clean ballast tanks shall also be equipped with an oil content meter, subject to approval by the Administration.
  • Every oil tanker operating with dedicated clean ballast tanks shall also be provided with as Dedicated Clean Ballast Tank Operation Manual, detailing system and operational procedures.

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