On the Rope Tension of the Single Mooring Buoy due to Gust and Setting the Critical Load of the Alarm

Abstract

This paper deals with the effect of irregular winds (gust) on the rope tension of the single mooring buoy system. Following the principle of linear superposition, a theoretical calculation of the rope tension of a buoy system is performed using Davenport's spectrum of gustiness in high winds. The results show that the value of the variance of the rope tension is very large owing to sharp dynamic response of the system at the vicinity of resonance. Hence, in such system, the use of the alarm is recommended and how to set the crititcal load of the alarm is suggested.