the presence of the background light at night
the state of wind，sea and current
the number of crew on board
the draught in relation to the available depth of water
第1题：
In a narrow channel or fairway when overtaking can take place only if the vessel to be over-taken has to take action to permit safe passing， the vessel intending to overtake shall indicate her intention by sounding appropriate signal． This means that ________ ．
A.the vessel to be overtaken shall sound appropriate signal first
B.the overtaking vessel shall sound appropriate signal first
C.the overtaking vessel shall take action to permit safe passing
D.the vessel to be overtaken shall take action to permit safe passing before hearing appropriate signal
第2题：
A vessel hearing a fog signal forward of her beam has not determined if risk of collision exists. She shall reduce speed to ______.
A.moderate speed
B.safe speed
C.half speed
D.bare steerageway
第3题：
A、Among chief of those
B、Among those chief
C、Chief among those
D、Among chief those
第4题：
In determining a safe speed, the Rules list all of the following as factors which must be taken into account EXPECT the ______.
A.limitations of radar equipment
B.presence of background lights at night
C.maximum horsepower of your vessel
D.maneuverability of your vessel
第5题：
______is the speed of a vessel allowing time for effective action to be taken under prevailing circumstances and conditions to avoid a collision and to be stopped within an appropriate distance．
A.Safe speed
B.Economic speed
C.Proper speed
D.Navigation speed
第6题：
In restricted visibility the safe speed of a vessel without operational radar may be ________ enable effective avoiding action to be taken on sighting another ship．
A.too low to
B.too high to
C.too high for
D.too low for
第7题：
The governor brake shall be capable of controlling the speed of lowering a fully equipped lifeboat with its complement of persons on board at ______．
A.safe speed only specified
B.not less than 120 feet per minute
C.not more than 120 feet per minute
D.not more than 90 feet per minute
第8题：
In determining a safe speed ________ shall not be among those taken into account．
A.the state of visibility
B.the power of the vessel
C.the traffic density
D.the maneuverability of the vessel
第9题：
In determining a safe speed of your ship, _____ shall not be among those taken into account.
A.the state of visibility
B.the traffic density
C.the number of crew on board
D.the maneuverability of the vessel
第10题：
Definition of Length：（）