单项选择题
After casting off moorings at a mooring buoy in calm weather，you should（）.
A.go full ahead on the engine(s) B.back away a few lengths to clear the buoy and then go ahead on the engines C.go half ahead on the engines and put the rudder hard right D.go half ahead on the engines and pass upstream of the buoy
单项选择题 A vessel moored with two anchors，sometimes，at an exposed roadstead to（）.
单项选择题 A vessel is wind rode when it is（）.
单项选择题 A vessel brought alongside should be fended off the towing vessel by（）.
