Ship voyage characteristics in Wuhan Yangtze River Bridge waterway

To ensure the navigation safety of ships, the characteristics of ships that go through the bridge waterway of Wuhan Yangtze River Bridge need to be studied. Ships' AIS information was used as a data source to analyze the distributions of the ship speed when ships navigating into and out of the bridge waterway downstream, as well as when passing by the buoys and the navigable hole. Then the shortest distance between the ships and their nearest buoys, the ships and the bridge piers were all calculated, the relationship between the distribution of the shortest distance and the corresponding ship speed was studied. Statistic analysis and K-S testing prove that, the ship speed of the downstream ships that navigate into and out of the bridge waterway, pass by the buoys and the navigable hole, obeys positive skew distribution respectively. The shortest distance between ships and the bridge pier obeys negative skew distribution, the shortest distance between ships and the navigation buoy is almost normal distributed. There is no linear relationship between the ship speed and the shortest distance.