Activity-Based Fuel Oil Consumption Estimation for Calculating Energy Efficiency Operational Indicator (EEOI) in an Indonesian Merchant Ship

Global shipping accounts for nearly one million tonnes of CO2 emissions annually during 2013 - 2015 period, and could grow 50%-250% by 2050 if the condition is unchanged. The International Maritime Organization (IMO) as the specialized agency responded to this issue written in MEPC.304(72) about strategy of reducing green house gas (GHG) emissions from ships. Energy Efficiency Operational Indicator (EEOI) is a monitoring tool based on CO2 emissions proposed by IMO written in MEPC.282(70). The purpose of this research is to evaluate factors influencing the results of EEOI. Estimation of fuel oil consumption using proposed methods by Bialystocki and Konovessis and Moreno-Gutiérrez, et al. are compared with actual fuel oil consumption resulted in average error of 20.44% and 15.45%. The EEOI results is 0.000905 ton CO2/TEU-nm for MV Meratus Benoa and 0.000509 ton CO2/TEU-nm for MV Meratus Bontang. Benchmarking process using the same voyage route revealed that MV Meratus Benoa is less efficient than MV Meratus Bontang. MV Meratus Benoa carried less average cargo than MV Meratus Bontang, while having more average fuel oil consumption. Proposed improvement for better EEOI results is improving the cargo management especially for MV Meratus Benoa and evaluation in ship's operational setting for any specific sea conditions.