See definition of Exhaust Gas Cleaning System (EGCS)
Note: The definition for Scrubber under Section IV, (13), MARINA Circular No. SR 2020-06, Series of 2020, Rules and Regulations on the Mandatory Use of 0.50% M/M Sulphur Limit on Fuel Oil for All Philippines Registered Ships in Compliance to Annex VI of MARPOL 73/78, As Amended, is an error, as the definition belongs to Recognized Organizations (ROs) per the Section IV(12) of the aforementioned MARINA Circular.