单项选择题
A.Length of the towline B.Height of the towline connection C.Longitudinal position of the towline connection D.Direction of opposing force
A reaching course is one in which the wind().A.comes di...
单项选择题A reaching course is one in which the wind().
A.comes directly over the bow B.comes directly over the stern C.comes over an area extending from broad on the bow to the quarter D.has no effect on the vessel
A racetrack turn would be better than a Williamson turn...
单项选择题A racetrack turn would be better than a Williamson turn in recovering a man overboard if ().
A.the man has been missing for a period of time B.the sea water is very cold and the man is visible C.there is thick fog D.the wind was from astern on the original course
While moving ahead,a twin-screw ship has an advantage o...
单项选择题While moving ahead,a twin-screw ship has an advantage over a single-screw ship because ().
A.correct trim will be obtained more easily B.drag effect will be cancelled out C.side forces will be eliminated D.speed will be increased