New study shows ships already meet EEDI 2020 standard

As of January 1st 2013, all new ships have to meet a minimum value for their Energy Efficiency Design Index (EEDI). The EEDI value ships have to meet is a function of ship type and size of the ship. It is based on an empirical regression line of the efficiency of ships built between 1999 and 2009 which is called the reference line. The reference lines were calculated using publicly available data to construct a simplified version of the EEDI called the Estimated Index Value (EIV).

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There is little publicly available information on how the design efficiency of ships that have entered the fleet since 2009 has developed. The IMO has published the EEDI of a limited number of ships launched since 2012, but the sample of ships is small and the time period limited. The published data show clearly, however, that EIVs and EEDIs of ships are well correlated.

The report analyses the EIV of over 9,000 new ships that have entered the fleet between January 2009 and July 2014. Their design efficiency has improved considerably between 2009 and 2014. In 2013 and 2014, approximately 90% of new container ships had EIVs below the reference line.

The detailed analysis of ship types shows many ships have an EIV 10% or more below the reference line. This is the case for about a fifth of tankers, gas carriers and combination carriers, over a quarter of bulk carriers, and over three quarters of container ships and general cargo ships that have entered the fleet since 2013. Taking into account that the EIV is an overestimation of the EEDI, this result suggests many ships already exceed the EEDI required from 2015.

The EIV improvements have, for a number of ship categories, coincided with increases in average design speed and decreases in main engine power. This suggests that hull or propulsion efficiency has been improved. These findings also suggest that, if design speeds were kept constant, even larger improvements in design efficiency would have been possible

Further details may be found by reading the study “Analysis of EIVs of Ships that have entered the fleet since 2009” by clicking below:

Also read previous study conducted by CE Delft on fuel efficiency and how shipping industry reacted

As of January 1st 2013, all newly constructed ships have to meet design efficiency standards adopted by the IMO (Energy Efficiency Design Index –EEDI values). The design efficiency standards that new ships must meet are a function of ship type and size of ship. The standards are based on an empirical regression line of the efficiency of ships built between 1999 and 2009 which is called the reference line (RL). Below the EEDI design efficiency standards that need to be achieved:

While the EIV score used in the report is not the same as the EEDI score, CE Delft has compared known EEDI scores of recently built ships with their EIV scores and determined that there is a very significant correlation, allowing EIV to be used as a proxy for EEDI in assessing the effectiveness of the EEDI.

Source: Seas at Risk

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