Abstract:

Research and development activities are being carried out around the world in order to reduce the energy consumption of the vehicles used in the maritime industry while operating the maritime transport systems. By taking into consideration the International Maritime Organization's (MARPOL Annex VI) "Regulations for the Prevention of Air Pollution Arising from Ships", it is more important to obtain energy savings and low emission values in marine vessels. Concordantly, efforts are being made to contribute to technological developments in main engines, shipbuilding and propulsion systems in order to achieve energy recovery in marine transportation systems. The Energy Efficiency Design Index created by IMO is one of the most important parameters for newly built vessels and aims to encourage the use of more energy saving and less emissions equipment and ship machinery. In this study, fuel consumption, total operation times, type of fuel used and analysis values of fuel of tugboats during towage service were obtained. Improvements in the main engine system that exist in tugboats are theoretically examined and their effects on the system are shown. By using alternative fuels instead of the fuel used during the operation, positive and negative results that can be occured in the system have been expressed.

Keywords: