单项选择题
A.straight astern B.to port C.to starboard D.in no particular direction
A vessel is considered to be restricted in her ability ...
单项选择题A vessel is considered to be restricted in her ability to maneuver under the Rules if she is （）.
A.at anchor B.mine-clearing C.engaged in fishing D.engaged in towing
A vessel fitted with twin screws is easier in（）than a v...
单项选择题A vessel fitted with twin screws is easier in（）than a vessel with single screw.
A.turning maneuver B.course setting C.position fixing D.regulating speed
A twin-screw vessel is easier to maneuver than a single...
单项选择题A twin-screw vessel is easier to maneuver than a single-screw vessel because the twin-screw vessel（）.
A.permits the rudder to move faster B.generates more power C.can turn without using her rudder D.can suck the water away from the rudder
