单项选择题
Which mooring line has the least elasticity?()
A.Dacron B.Nylon C.Esterlene D.Polypropylene
单项选择题 Which method of adjusting mooring lines is MOST useful for leaving a boat free to rise and fall with the tide?()
单项选择题 Which method is used to detect rot in manila lines?()
单项选择题 Which measure should NOT be taken to reduce the pounding of a vessel in a head sea?()