单选题A nun buoy will（）.A be green in colorB have an even numberC be left to port when entering from seawardD be cylindrical in shape

A green buoy has a yellow triangle on it. This is a(n) ______.

A.information or regulatory buoy that has lateral significance

B.buoy that is off-station and is marked to warn mariners of its wrong position

C.dual purpose marking used where the ICW and other waterways coincide

D.buoy that was set in error and will be replaced with a red nun buoy

You are sailing south on the Intracoastal Waterway（ICW）when you sight a green can buoy with a yellow square painted on it．Which of the following is TRUE ________．

A.You should pass the buoy close aboard on either side

B.The buoy marks the end of the ICW in that area

C.You should leave the buoy to port

D.The yellow square is retroreflective material used to assist in sighting the buoy at night

Preferred channel buoys indicate the preferred channel to transit by ______.

A.odd or even numbers

B.the color of their top band

C.the location of the buoy in the channel junction

D.the buoy’s light rhythms

How would you pass a red buoy in the maritime buoyage system “A”?______.

A.keep the buoy on the vessel’s starboard side when approaching a port and on the vessel’s port side when leaving

B.keep the buoy on the vessel’s port side when approaching a port and on the vessel’s starboard side when leaving

C.keep the buoy on the vessel’s starboard side when approaching and leaving

D.keep the buoy on the vessel’s port side when approaching and leaving

You are entering an east coast port and see a buoy with a yellow triangle painted on it．This indicates ______．

A.you are in the vicinity of the ICW

B.the buoy is a special mark

C.the buoy is off station

D.the buoy designates a sharp turn in the channel

After casting off moorings at a mooring buoy in calm weather，you should______．

A.go full ahead on the engine(s)

B.back away a few lengths to clear the buoy and then go ahead on the engines

C.go half ahead on the engines and put the rudder hard right

D.go half ahead on the engines and pass upstream of the buoy

When a buoy is in position only during a certain period of the year，where may the dates when the buoy is in position be found?

A.Light List

B.Notice to Mariners

C.On the chart

D.Coast Pilot