73－75第73题：

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 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

In order to reduce your wake in a narrow channel you should ______.

A.apply enough rudder to counter the effect of the current

B.change your course to a zigzag course

C.reduce your speed

D.shift the weight to the stern

When hugging a bank in a narrow channel，you should take precautions against ______．

A.Bank suction，squat and the effects of vessels passing close aboard

B.Clogged sea chests，plugged sea strainers and overheated machinery

C.Striking underwater obstructions close to the bank

D.All of the above

imit of the channel which lies on her starboard side as it is safe and practicable．Which one of the followings does the statement express？

A.A vessel shall proceed near the other vessel on her starboard side on the narrow channel since it is safe and practicable

B.A vessel shall avoid proceeding near the starboard outer limit of a narrow channel as long as it is safe and practicable

C.A vessel shall avoid proceeding along the channel because it is not safe and practicable

D.A vessel shall proceed near the starboard outer limit of a narrow channel to the degree in which it is safe and practicable

A．A.I've bought a new car

B．B.It's on the film channel at 20: 30

C．C.Yes, it's really interesting

__.

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

A. The South Auxiliary Channel since your draft is less than 25 feet (7.6 meters)，and you are not a passenger vessel

B. The South Auxiliary Channel or Thimble Shoal Channel，but you must remain on the right hand side of the main channel

C. The North Auxiliary Channel since you are going to turn to a northerly heading near buoy "12"

D. You are not permitted to use any of the channels，but must remain outside the buoyed channel line