02 JULY 2012

Although EEDI was a non-mandatory instrument, IMO MEPC 62 has

made this mandatory under a new Chapter 4 of MARPOL Annex VI. This

requirement becomes mandatory on January 1, 2013 and affects both

new and existing vessels.


In an effort to reduce emissions of greenhouse gases (GHGs) from international shipping the first ever mandatory global greenhouse gas reduction regime for an international industry sector has been carried out by Parties to MARPOL Annex VI represented in the Marine Environment Protection Committee (MEPC) of the International
Maritime Organization (IMO). The meeting was carried out at MEPC 62 session from 11 to 15 July 2011 at IMO Headquarters in London.
The Energy Efficiency Design Index (EEDI) is applicable mainly to new ships in order to control the CO2 emissions from ships generated per tone-mile (cargo carrying capacity). The MEPC 55 on October 2009 and MEPC 59 in July 2009 agreed to a package of technical and operational measures to improve energy efficiency and reduce GHG emissions from the international shipping. Consequently, IMO has adopted the following technical and operational measures:
 Energy Efficiency Design Index (EEDI);
 Energy Efficiency Operational Index (EEOI); and
 Ship Energy Efficiency Management Plan (SEEMP).
The EEDI and SEEMP will both enter into force on January 1, 2013 within the new MARPOL Annex VI, Chapter 4 as
adopted by MEPC.203(62) on July 15, 2011.
At MEPC 63 in March 2, 2012 the IMO has adopted the following Resolutions:
 Resolutions MEPC.212(63) – 2012 Guidelines on the Method of Calculation of the Attained Energy Efficiency
Design Index (EEDI) for New Ships;
 Resolutions MEPC.213(63) – 2012 Guidelines for the Development of a Ship Energy Efficiency Management
Plan (SEEMP);
 Resolutions MEPC.214(63) – 2012 Guidelines on Survey and Certification of the Energy Efficiency Design
Index (EEDI); and
 Resolution MEPC.215(63) – Guidelines for Calculation of Reference Lines for use with the Energy Efficiency
Design Index (EEDI).

As stated above this regulation is applicable to new ships of 400 gross tonnage and above, except for ships with
diesel-electric, steam turbine or hybrid propulsions system, as follow:
 Bulk carriers
 Gas carriers
 Tankers
 Container ships
 General cargo ships
 Refrigerated cargo ships
 Combination carriers
 Passenger ships
 Ro-ro cargo ships (including vehicle carriers)
 Ro-ro passenger ships


Each ship will require its own EEDI
Following successful verification the International Energy Efficiency Certificate (IEEC) will be issued on behalf of
the flag Administration that the ship is flying. The Certificate will cover both EEDI and SEEMP and has not expiry
date unless one of the following scenarios is applicable:
 the ship undergoes major conversion; or
 the ship is withdrawn from service; or
 the ship is changing the flag Administration.
According to IMO resolution MEPC.214(63) the verification of the EEDI will be carried out in two stages as shown
 Pre-verification: carried out at the design stage; and
 Final verification: carried out upon completion of the sea trials and commissioning.
The figure below shows the basic flow of survey and certification process as adopted through above mentioned Resolution.

Through MEPC.212(63) the attained new ship Energy Efficiency Design Index (EEDI) is a measure of ships energy
efficiency (g/t*nm) and calculated by the following formula:

The above formula may be used to calculate how much CO2 is produced per transport work done for the ship. The first term of the top line represents the main engine, the second term the auxiliary engine(s), the third term the energy saving technologies (of auxiliary power) and the fourth term the energy efficiency technologies (for main power). Energy savings technologies include but not limited to waste heat recovery systems, use of wind power or solar etc. In this case, the CO2 produced is estimated on the product of the power, specific fuel consumption and carbon factor for a particular type of fuel used.
The bottom line of the equation represents the transport work of the ship that is related to the total CO2
generated by each of the four terms as outlined above, the ship capacity and speed. Some correction factors may be applied on above equation. For the full calculation method of EEDI please refer to IMO resolution MEPC.212(63) regarding the 2012 Guidelines on the Method of Calculation of the Attained EEDI for New Ships.


Additionally, some specific ship types will be required to meet the attained EEDI which is equal to or less than the required EEDI values. These have been determined using reference lines. The method of calculation of the required EEDI is as follow:
Attained EEDI ≤ Required EEDI = (1-X/100) x Reference line value
The reference lines have been developed for different ship types as shown on table below. These are calculated based on the below formula:
Reference line value = a x bc

For each new and existing ship that has undergone a “major conversion” which is so extensive that the ship is
regarded as a newly constructed ship, the attained EEDI shall be calculated and meet the required EEDI taking into consideration the reduction factor as shown on table below (for the definition of “major conversation” refer to MEPC.203(62)). The applicability of reduction factor is based on the ship type and size. The philosophy of the reduction factor is the same as NOx and SOx limits.

For further information regarding the required EEDI and reduction factors please refer to IMO Resolution


Further to the requirements of EEDI as discussed above, IMO MEPC 62 has also adopted the Ship Energy Efficiency Management Plan (SEEMP) as per Regulation 22 of Chapter 4, Annex VI of MARPOL.
The regulation requires that all ships of 400 GT or above to have a SEEMP which includes energy efficiency
measures and which should meet the guidelines developed by IMO through Resolution MEPC.213(63). Although SEEMP is part of the requirements for the new IEE Certificate, this manual shall also be verified at intermediate and renewal surveys required under existing MARPOL Annex VI for the issuance of the International IAPP Certificate.


The EEDI will apply to new ships of 400 gross tonnage and above (except those with diesel-electric, turbine or hybrid propulsion systems) as outlined below:
 For which the building contract is placed on or after January 1, 2013;
 In the absence of a building contract, the keel of which is laid or which is at a similar stage of construction
on or after July 1, 2013; and
 The delivery of which is on or after July 1, 2015.
The Administration may choose to waive the requirement of EEDI up to 4 years after each of the above dates.
It is important to note that EEDI will also apply to ship that undergo a “major conversion” as defined in Resolution MEPC.203(62). For existing ships, all Owner / Managers / Operators shall make sure that a ship – specific SEEMP is provided onboard before January 1, 2013. The plan must be part of the ship’s Safety Management System (SMS).

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