Paragraph 21 Monitoring methods for maritime emissionsF1

The maritime operator must indicate in the emissions monitoring plan which monitoring method is to be used to determine the maritime emissions for each ship under its responsibility and ensure that once a method has been chosen, it is consistently applied.

The methods A, B, C and D described in paragraphs 22 to 25, based on the calculation approach or the measurement approach, can be used.

Under the calculation approach (methods A, B and C), maritime emissions must be calculated using the formulae set out in Part 6. For that purpose, the actual fuel consumption for each voyage must be determined using any of methods A, B or C described in paragraphs 22 to 24 and used for the purpose of the calculation.

Sources of uncertainty and associated levels of uncertainty must be considered when selecting any of methods A, B or C. The maritime operator must regularly perform suitable control activities, including cross-checks between the bunkering quantity as provided by the BDN and the bunkering quantity indicated by on-board measurement, and take corrective action if a notable deviation is observed.

Under the measurement approach (method D), direct maritime emissions measurements are used.

Any combination of methods A, B, C and D, once approved by the regulator, may be used if it enhances the overall accuracy of the measurement.

Where the term ‘relevant’ is used in relation to fuels or emission sources in paragraphs 22 to 25, this means the fuel or emission source for which the method has been selected.