A Basic Study on Estimating the Effects of Wind Propulsion Systems
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In recent years, the implementation of EEDI and EEXI has led to a greater focus on energy conservation in shipping. Recently, marine equipment manufacturers have started developing and implementing innovative energy-saving devices, such as air lubrication systems and wind-assist propulsion systems (WAPS), to further reduce energy consumption. Examples of wind-assist devices include the wind-assisted ship propulsion systems developed by Mitsui O.S.K. Lines and the automated kite system developed by Kawasaki Kisen Kaisha, Ltd., both of which are expected to have a certain energy-saving effect. However, a study by Sogihara et al. has shown that weather lading significantly impacts the energy-saving effect of wind-assist devices. Against this background, the authors estimated the energy-saving effect of wind-assist devices using a high-quality, practical meteorological and oceanographic database. In addition, the difference in energy saving effect depending on the resolution of the database used was confirmed.