Abstract
Recently long period waves and sudden growing waves cause breakage of mooring ropes and over compression of fenders and damage moored ships. In this paper we study on determining the judgement of survival mooring conditions for a specific port by using the wave statistics in ports and harbors and weather data. The obtained results are summarized as follows : (1) By using the existing wave statistics, the useful characteristics for judgement of survival mooring conditions for the port is obtained. (2) The wave height is the most important for the judgement of survival conditions. So we define new parameters as a maximum wave height and a growth rate of wave height in order to clarify the relation between wave heights and atmospheric pressures. (3) Studying the correlations between above new parameters, the characteristics of wind and moving low pressures, we can obtain available informations for judgement of survival mooring conditions. (4) Since there exists the time difference between the neighboring harbors when the maximum wave heights happen, it is useful to exchange the wave height informations to judge the mooring conditions.
