7 Verification of wind propulsion systems in the EEDI certification process
Clasification Society 2023 - Version 9.37
Statutory Documents - IMO Publications and Documents - Circulars - Marine Environment Protection Committee - MEPC.1/Circular.815 – 2013 Guidance on Treatment of Innovative Energy Efficiency Technologies for Calculation and Verification of the Attained EEDI – (17 June 2013) - Annex 11 – Guidance on Calculation and Verification of Effects of Category (B) Innovative Technologies - Appendix 2 – Wind Propulsion System (Category (B-2)) - 7 Verification of wind propulsion systems in the EEDI certification process

7 Verification of wind propulsion systems in the EEDI certification process

7.1 General

 Verification of EEDI with innovative energy efficient technologies should be conducted according to the EEDI Survey Guidelines. Additional items concerning innovative energy efficient technologies not contained in EEDI Survey Guidelines are described below.

7.2 Preliminary verification at the design stage

  7.2.1 In addition to paragraph 4.2.2 of EEDI Survey Guidelines, the EEDI Technical File which is to be developed by the shipowner or shipbuilder should include:

  • .1 Outline of Wind propulsion systems; and

  • .2 Calculated value of EEDI due to the wind propulsion system.

  7.2.2 In addition to paragraph 4.2.7 of the EEDI Survey Guidelines, additional information from the shipbuilder may be requested by the verifier. It includes:

  • .1 Detailed calculation process of the wind propulsion system force matrix F(Vref)i,j and results of performance testsfootnote.

  7.2.3 In order to prevent undesirable effects on the ship's structure or main drive, the influences of added forces on the ship should be determined during the EEDI certification process. Elements in the wind propulsion system force matrix may be limited to ship specific restrictions if necessary. The technical means to restrict the wind propulsion system's force should be verified as part of the performance testfootnote.

  7.2.4 If more than one innovative energy efficient technology is subject to approval in the EEDI certification, interactions between these technologies should be considered. The appropriate technical papers should be included in the additional information submitted to the verifier in the certification process.

7.3 Final verification of the attained EEDI at sea trial

 The total net power generated by wind propulsion systems should be confirmed based on the EEDI Technical File. In addition to the confirmation, it should be confirmed prior to the final verification, whether the configuration of the wind propulsion systems on the ship is the same as applied in the pre-verification.


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