Environmental protection and energy efficiency improvement by using natural gas fuel in maritime transportation

Emissions from vessels are a major environmental concern because of their impacts on the deterioration environment, especially global warming atmosphere. Therefore, International Maritime Organization (IMO) concerns significant care to protection through reduction exhaust emission and improvement energy efficiency technical operational measures. Among suggested measures IMO, alternative fuel such as natural gas has priority be used instead fossil fuels. The present paper calculates effect using in dual-fuel engine perspectives. As case study, container ship been investigated. results analysis show that percent CO2, NOx, SOx corresponding operated by diesel heavy oil is about 30.4%, 85.3%, 97%, respectively. Moreover, it found NOx rates comply with IMO 2016 2020 limits, Furthermore, Energy Efficiency Design Index value lower than 30%, this will 77.18%, 86.84%, 99.27% required for first, second, third phases, respectively, recommended IMO.