Analysis of the operational ship energy efficiency considering navigation environmental impacts

In this study, a remote collecting system for ship operation energy efficiency was designed by using a tourist ship. According to measured data, the navigation environment factors of the ship were analysed statistically. The Gray correlation analysis was used to study the correlation degree among wind, water depth, water velocity and ship operation energy efficiency. On this basis, the Wuhan–Nanjing section of Yangtze River (upstream and downstream) was selected to analyse the law of wind speed effect on the energy efficiency of ship operation. The data analysis demonstrates that in different navigation environments, the ship energy efficiency can be significantly improved by optimising the main engine speed.