单项选择题
A.number of fishhooks B.kink in the line C.50% loss of efficiency of the line D.increase in deterioration of the line
A.the eye of the second line is dipped B.the mooring lines are doubled C.the bollard has two horns D.one of the lines is a breast line
A.take the wear should the towline drag bottom B.assure that if the towline is overstressed it will part close to the bridle C.prevent the towline from whipping should it part D.put spring in the towline