An orange and white buoy with a rectangle on it displays（）.

A white buoy with an orange rectangle on it displays（）.

Buoys are marked with reflective material to assist in their detection by searchlight. Which statement is TRUE? （）

A white buoy with an open-faced orange diamond on it indicates（）.

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

A structure，usually made of stone，or cement pilings，which extends from the bank at approximately right angles to the current is called a（）.

A rock and sand structure extending from the bank of the river toward the channel is known as a（）.

A parallel of latitude other than the equator is a（）.

Buoys which mark dredging areas are painted（）.

From your position you observe a rotating white and green light to the north. This light is most likely（）.