Document BWM.2/Circ.66/Rev.4 has been published on February 14th, 2023, and revokes circular BWM.2/Circ.66/Rev.3.
The Marine Environment Protection Committee, at its seventy-ninth session (12 to 16 December 2022), approved a revised unified interpretation to regulation E-1.1.5 of the BWM Convention and the Form of the International Ballast Water Management Certificate, concerning commissioning testing of a ballast water management system which has undergone a major modification or an upgrade on board an existing ship in order to improve the performance of the BWMS and ensure compliance with the D-2 standard.
MEPC 79 also approved a unified interpretation to paragraph 4.10 of the BWMS Code, concerning requirements for the calibration of the BWMS components that take measurements.
The updated consolidated text of all existing unified interpretations to the BWM Convention and the BWMS Code, including those set out in BWM.2/Circ.66/Rev.3, is set out in annexes 1 and 2 (see below), respectively.
Member Governments and international organizations are invited to apply the annexed unified interpretations to the BWM Convention and the BWMS Code and bring them to the attention of all parties concerned.