A vessel proceeding along a narrow channel shall（）.

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

Your vessel is crossing a narrow channel．A vessel to port is within the channel and crossing your course．She is showing a black cylinder．What is your responsibility ________．

A.Hold your course and speed

B.Sound the danger signal

C.Begin an exchange of passing signals

D.Do not cross the channel if you might impede the other vessel

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 proceeding along a narrow channel shall ______.

A.avoid crossing the channel at right angles

B.not overtake any vessels within the channel

C.keep as near as safe and practicable to the limit of the channel on her starboard side

D.when nearing a bend in the channel, sound a long blast of the whistle

A vessel traveling down a narrow channel，especially if the draft is nearly equal to the depth of the water，may set off the nearer side. This effect is known as ______.

A.smelling the bottom

B.squatting

C.bank suction

D.bank cushion

A vessel approaching a narrow channel shall _____.

A.avoid crossing the channel if it impedes another vessel navigating in the channel

B.not overtake any vessels within the channel

C.keep as close as possible to the edge of the channel on her port side

D.anchor only in the middle of the channel

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

In a narrow channel, a signal of intent which must be answered by the other vessel, is sounded by a vessel ______.

A.meeting another head-on

B.overtaking another

C.Any of the above

D.crossing the course of another