Abstract
In order to find more safety and more suitable mooring system of a moored ship to a quay by means of mooring lines and fenders in a harbour under the heavy weather such as typhoon, authors carried out a series of experiment by using of 1/50 scale models in the water-tank equipment and recorded time histories on the tension load of mooring lines, the impact force against fenders and the ship's motion with six degrees of freedom, in oblique, head and beam seas to the quay wall. We considered the case of GT 5, 000t cargo ship (Lpp=115m) moored to the quay by eight ideal mooring arrangements at 14m in the depth of water rising up to the top of quay wall. The wave condition acting on the ship were extensively changed with regard to the wave length, wave height and attack angle of wave to the quay. In addition to these experiments, we carried out another series of the model experiment for a dolphin-ship mooring in order to realize the validity of the theorical computation by the linearized numerical model of a mooring system which was developed by Japan Ship Research Association.
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