1.1 The purpose of this guidance is to assist manufacturers, shipbuilders,
shipowners, verifiers and other interested parties relating to Energy Efficiency Design
Index (EEDI) and Energy Efficiency Existing Ship Index (EEXI) of ships to treat
innovative energy efficiency technologies for calculation and verification of the
attained EEDI, in accordance with regulations 5, 6, 7, 8, 9 and 20 of Annex VI
to MARPOL. Although the term EEDI only is used through the whole guidance, it applies to
both the EEDI and the EEXI calculations, as applicable.
1.2 There are EEDI Calculation Guidelines and EEDI Survey Guidelines. This
guidance does not intend to supersede those guidelines but provides the methodology of
calculation, survey and certification of innovative energy efficiency technologies,
which are not covered by those guidelines. In the case that there are inconsistencies
between this guidance and these guidelines, those guidelines should take precedence.
1.3 This guidance might not provide sufficient measures of calculation and
verification for ships with diesel-electric propulsion, turbine propulsion and hybrid
propulsion systems on the grounds that the attained EEDI Formula shown in EEDI
Calculation Guidelines may not be able to apply to such propulsion systems.
1.4 The guidance should be reviewed for the inclusion of new innovative
technologies not yet covered by the guidance.
1.5 The guidance also should be reviewed, after accumulating the experiences
of each innovative technology, in order to make it more robust and effective, using the
feedback from actual operating data. Therefore, it is advisable that the effect of each
innovative technology in actual operating conditions should be monitored and collected
for future improvement of this guidance document.