CO₂ emissions from international shipping could increase between 50-250% by 2050 year. The EEDI (Energy Efficiency Design Index) is a key requirement for regulating CO₂ emissions of maritime transport; a requirement was introduced in 2011 by the International Maritime Organization and came into force gradually. In recent studies it was investigated that no other technologies has the potential and reserves compared to Cogeneration systems. The article provides a short review of ship energy efficiency design index improving technologies and cogeneration systems application for maritime transport. A brief comparative analysis of cogeneration cycles is provided also. CO₂ emissions from international shipping could increase between 50–250% by 2050 year. The EEDI (Energy Efficiency Design Index) is a key requirement for regulating CO₂ emissions of maritime transport; a requirement was introduced in 2011 by the International Maritime Organization and came into force gradually. In recent studies it was investigated that no other technologies have the potential and reserves compared to Cogeneration systems. The article provides a short review of ship energy efficiency design index improving technologies and cogeneration systems application for maritime transport which have direct relation with CO₂ emissions. A brief comparative analysis of cogeneration cycles is provided also.

DOI: https://doi.org/10.3846/aainz.2021.03