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In this research, the Energy Efficiency Operational Indicator (EEOI) used as emission estimation parameter on three Indonesian’s sea toll way corridors. Operational data of the ships, such as speed, Deadweight Tonnage (DWT), load and load’s utilization are used in this research. Moreover, unavailable operational data are to be assumed with comparable assumptions or suitable calculation. Furthermore, the data are used to calculate the fuel consumption of the voyage, which is the main variable in the emission index calculation. The method, so-called, a ‘slow-steaming’ method is utilized to optimize the emission parameter. The result shows that the slow steaming process is indeed bring more efficient emission result for the sea toll way under consideration. Decreasing the speed to 10% of current speed is decreasing the Fuel Consumption of the ships around 17% to 19% yearly. Decreased it further to 12%, lowered the fuel consumption around 23% from current yearly fuel consumption. Moreover, applying slow steaming with 10% and 12% rate in each route resulted in a decreasing rate of emission produces of around 19% and 23% respectively. These results are encouraging as an initial step to measures the emission level on the Indonesian Sea tollway. |
