A sailing vessel shall not impede the safe passage of a（）．

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

A vessel engaged in ______ shall not impede the passage of any other vessel navigating within a narrow channel or fairway．

A.mine clearance operation

B.towing operation

C.dredging or surveying or underwater operation

D.fishing

If a seaplane is not used as a means of transpiration on water but is capable of being used so，it shall ().

A.be regarded as a vessel not under command

B.be regarded as a vessel underway

C.be regarded as a vessel

D.be regarded as a sailing vessel

A vessel engaged in fishing shall not impede the passage of______following a traffic lane．

(1)．A power-driven vessel

(2)．a sailing vessel

(3)．any vessel

(4)．a vessel of less than 20 metres in length

A.(1)

B.(1) & (2)

C.(3)

D.(4)

A vessel sailing shall keep out of the way of all of the following vessels except a vessel ______.

A.not under command

B.engaged on pilotage duty

C.restricted in her ability to maneuver

D.engaged in fishing

A vessel not to impede the passage of another vessel is not relieved ______ taking collision-avoiding action．

A.on

B.of

C.in

D.for

You are crossing a narrow channel in a 15-meter vessel when you sight a tanker off your port bow coming up the channel. Which statement is TRUE?

A.Yours is the give-way vessel because it is less than 30 meters long

B.You shall not impede the safe passage of the tanker

C.The tanker is the stand-on vessel because it is to port of your vessel

D.The tanker is the stand-on vessel because it is the larger of the two vessels

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

The vessel shall be employed in such lawful trades between safe ports and places within Northern America as the ______ or their agents shall direct．

A.Charterers

B.Cargo owners

C.Owners

D.The merchants

If a sailing vessel with the wind on the port side sees a sailing vessel to windward and cannot tell weather the other vessel has the wind on the port or starboard side, she shall ______.

A.hold course and speed

B.sound the danger signal

C.keep out of the way of the other vessel

D.turn to port and come into the wind