A study on EEDI and EEXI requirements and ship emission reduction strategies

As response to the growing pressure to reduce Green House Gases emissions from ships with detrimental effects on the environment and climate, the International Maritime Organization (IMO) has developed mandatory requirements and regulatory tools such as: Energy Efficiency Design Index (EEDI), Energy Efficiency Existing Ship Index (EEXI), Ship Energy Efficiency Management Plan (SEEMP) and Carbon Intensity Indicator (CII). The paper presents o comparative study of EEDI and EEXI requirements, as a set of technical measures to improve ships’ energy efficiency and to reduce emissions in line with IMO targets. The paper analyses the specific role of each index and how they together contribute to emissions reduction in the design and construction stages and through operational phases of the ship’s life.