A Short Note on Ship’s Energy Efficiency: EEDI, SEEMP & EEOI

The Energy Efficiency Design Index (EEDI) was made mandatory for new ships and the Ship Energy Efficiency Management Plan (SEEMP) for all ships at MEPC 62 (July 2011) with the adoption of amendments to MARPOL Annex VI (resolution MEPC.203(62)), by Parties to MARPOL Annex VI. This was the first legally binding climate change treaty to be adopted since the Kyoto Protocol. The new MARPOL Annex VI Chapter 4: Energy Efficiency requirements Enter into force on 1 January 2013.

Energy Efficiency Design Index (EEDI):

  • It is an index quantifying the amount of carbon dioxide that a ship emits in relation to the goods transported.
  • indication of energy efficiency by CO2 emission (g) per cargo carry (ton mile) The actual EEDI of a vessel is called the “attained EEDI” and is calculated based on guidelines published by IMO. The result must be below the limit “required EEDI” prescribed in MARPOL.
  • For existing vessels, the EEDI is in most cases irrelevant. It will become relevant only if a ship undergoes a major conversion that is so extensive that the ship is regarded by the Administration as a newly constructed ship.
  • For new ships, a technical file must be created showing the attained EEDI and its calculation process.
  • The EEDI and the technical file will be subject to verification by the flag administration.

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