A unified interpretation aimed at reducing NOx Emissions-Engine Family Concept The Directorate wishes to draw the attention of all concerned to the approval of revised Unified Interpretation (UI) on Engine Family and Engine Group Concept during the 78th session of the IMP Marine Environment Protection Committee (MEPC). For more information, please read the Technical Notice MARPOL. 13 by clicking here. Should you have any questions concerning this or other matters, please contact Jotham Scerri-Diacono or any other member of the shipping team at Ganado Advocates. Go back