Kinzo Inoue

Experimental Study on Quay Mooring of a Ship in Waves

With the objective of finding safer and more suitable quayside mooring line and fender to secure harbour berthed ships during heavy weather including typhoons, the authors carried out a series of tank experiments with 1:50 scale models. The vessel under consideration was a 5,000 G.T. cargo ship (Lpp=115m), moored to a given quay by eight ideal mooring arrangements. Time histories of the mooring line tensions, fender impact forces and movements, produces by oblique, head, and beam waves, were recorded for a ship having six degrees of freedom and subject to regular wave action. A second series of model experiments was carried out for a dolphin ship mooring. This was done to check the validity of a theoretical computation using a linearized numerical mooring system model that was developed by the Japan Ship Research Association. The information obtained from these experiments will assist the operators of ships and marine terminals.