MEPC 78 noted the updated International Towing Tank Conference (ITTC) recommended procedures and guidelines concerning the determination and verification of EEDI.
The updates include:
- The resistance test.
- Propulsion/bollard pull test.
- Performance prediction method for unequally loaded multiple propeller vessels.
- Preparation and conduct of speed trials.
- Calculation of Weather Factor for Decrease of Ship Speed in Waves
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The following topics were deferred until MEPC 79:
- Draft amendments to the 2018 Guidelines on the method of calculation of the Attained Energy Efficiency Design Index (EEDI) for new ships (resolution MEPC.308(73) as amended) to clarify the cubic capacity correction factor for LNG carriers.
- Amendments to Shaft Power Limitation concept for EEDI.
- Introduction of EEDI Phase 4.
- EEDI application dates for passenger ships with non-conventional propulsion.
- Proposed amendments to the revised 2018 Guidelines on calculating the attained Energy Efficiency Design Index (EEDI) for new ships to add a CF conversion factor for ethane.
- EEDI reduction beyond Phase 2 – consideration for large tankers / other technical issues affecting the evolution of EEDI
