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Abstract
This paper presents the research and construction of a real-time fuel calculation model for the main engine of ships using interpolation method. Fuel consumption is calculated based on the calculation of instantaneous power consumption and the specific fuel consumption at each sampling time. Instantaneous power is calculated based on the added resistance acting on the ship depending on different conditions, and this added resistance is calculated using semi-empirical formulas. Meanwhile, the specific fuel consumption is calculated by interpolation method from the specific fuel consumption curve by extracting sample data points from the sea trial data of the actual ship after new construction. Model testing results show that the model operates reliably and is capable of calculating fuel in real-time with small errors. This model can be used to find optimal routes for ships before each trip based on weather forecast information to improve fuel efficiency and reduce emissions into the environment.