reverse port engine，apply right rudder
reverse port engine，rudder amidships
reverse starboard engine，apply right rudder
reverse starboard engine，rudder amidships
第1题：
---Slow ahead both engines! ---Slow ahead both engines! ___________________!
A.Both engines slow ahead
B.Engine slow ahead port
C.Engine slow ahead starboard
D.Engine both ahead
第2题：
A vessel is equipped with twin propellers，both turning outboard with the engines half ahead.If there is no wind or current and the rudders are amidships，what will happen?
A.The bow will swing to starboard
B.The bow will swing to port
C.The vessel will steer a zigzag course
D.The vessel will steer a fairly straight course
第3题：
You may BEST turn a twin-screw vessel about，to the right，in a narrow channel by using ______.
A.Both engines ahead and helm
B.One engine only
C.Port engine ahead and the starboard engine astern
D.Both engines astern and use helm
第4题：
A twin-screw ship going ahead on the starboard screw only tends to move ______.
A.in a straight line
B.to port
C.from side to side
D.to starboard
第5题：
The use of an anchor to assist in turning in restricted waters is ______．
A.A last resort
B.Good seamanship
C.The sign of a novice shiphandler
D.To be used only with a single-screw vessel
第6题：
A twin-screw vessel with a single rudder is making headway. The engines are full speed ahead.There is no wind or current. Which statement is FALSE?
A.If one screw is stopped，the ship will turn toward the side of the stopped screw
B..The principal force which turns the ship is set up by the wake against the forward side of the rudder
C.Turning response by use of the rudder only is greater than on a single-screw vessel
D.With the rudder amidships，the ship will steer a fairly steady course
第7题：
When turning a ship in restricted space with a strong wind，it is normally best to ______．
A.Go ahead on both engines with the rudder hard to one side，if on a twin-screw vessel
B.Back down with the rudder hard to one side，if on a single-screw vessel
C.Take advantage of the tendency to back to port，if on a twin-screw vessel
D.Turn so that the tendency to back into the wind can be used，if on a single-screw vessel
第8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
第9题：
A twin screw vessel, making headway with both engines turning ahead, will turn more readily to starboard if you ______.
A.reverse port engine, apply right rudder
B.reverse port engine, rudder amidships
C.reverse starboard engine, apply right rudder
D.reverse starboard engine, rudder amidships
第10题：
In a twin screw ship going half-ahead,both screws turning outboard and the rudder amidships no current or wind, the vessel will ______.
A.Move bodily to port
B.Move bodily to starboard
C.Move in a zig-zag motion
D.Steer a fairly straight course