This study analyzes the energy efficiency of ships based on ISO 19030, which is a standard for the measurement of changes in hull and propeller performance. The goal is to provide energy efficiency management with digital indicators that have not been easily provided. The ship navigation information platform (SNIP) is developed to determine the dynamic information of each ship, including the fuel consumption, ship speed, horsepower of the engine, rotation speed of the engine, wind direction, and wind speed. In addition, model test data and computational fluid dynamics (CFD) calculation data are applied to calculate the energy efficiency performance indicators. Finally, the relationship of the speed through water and the speed over ground enables us to modify the effects of the ocean currents. The results verify that these indicators can be used as a reference for performance monitoring and maintenance prediction of international maritime affairs.
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