IACS Guidelines on Numerical Calculations for the purpose of deriving the Vref in the framework of the EEXI Regulation

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Hello QueSeas Community!

IACS developed these Guidelines about the Numerical Calculations for the
purpose of deriving the Vref in the framework of the EEXI Regulation in response to the Resolutions MEPC.350(78) and MEPC. 351(78).

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The Rec.173 was published just this month November 2022 and provides a methodology for deriving Vref using numerical calculations.

This methodology can be applied to the following scenarios:

  • In cases where a new speed power curve should be derived at the EEDI/EEXI draft in cases where the vessel has not been subjected to modifications.
  • In case where the vessel has been subjected to modifications, the methodologies described here-after can still be used where Validation/Calibration is computed with the original hull and the Calculation is performed on the modified hull.

You can download here the Rec.173.

rec173.pdf (1.7 MB)

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Great post! Thank you very much @Stela.Spiraj

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