Experimental Study on Wave Condition for Ship Unberthing under Long Periodic Wave
The wave standard for ship unberthing is an important parameter,which ensures the mooring safety of ships.In view of the action of long periodic waves,safe mooring is one of the important issues that need to be focused on.In the case,the mooring tests were carried out for oil tankers,LNG tankers and bulk carriers with different tonnage under long periodic waves.The change rule of ship cable tension force along with the change of periodic waves was analyzed.The empirical formula for calculating the maximum value of the cable tension force were put forward.Based the related specifications,the reduction coefficients for the variation of ship unberthing wave height along with the period change were given under the action of long periodic waves.The research results could provide a reference for real engineering design.
long periodic wavesmodel testship mooringcable tension forceunberthing
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