Research Of Four Phases Of Ningbo Wharf Berthing And Unberthing Maneuvering Safety

In this paper, through long-term trend observation, pilotage operation practice and mechanics analysis method; Elaborated Ningbo the four period dock trend causes, Analysis of four period dock hydrological and meteorological conditions in current situation, find out the suitable tide dynamic law, summarize the trend for berthing and sailing effect; Through the influence of large container ship berthing and sailing safety factors, theoretical analysis of force, Argument in a variety of wind, current weather conditions, how to give full use of the engineer, rudder, anchor, line and other functions, find out berthing and sailing required tug boats and dock crane position and quantity, Given the different flow conditions safe berthing and sailing method and berthing and matters needing attention, particularly detailed in the shear line under different berthing and sailing method, in order to safety depends on four terminals to provide a scientific basis for the pilot and captain reference, In order to avoid danger, safety purposes, thereby saving berthing and sailing time, improve the operation of the ship berth utilization ratio and efficiency.This paper presents the Ningbo four period dock safe berthing and sailing method, has been the author and the pilot and captain repeated verification, the current has been overwhelming majority of peer recognition and wide popularization and application, basically have not the urgent situation, relatively safe and smooth berthing and sailing, through this method can save about 15 minutes on average, greatly improving the dock berth utilization ratio and the operation efficiency of ships, produce bigger economic benefits.