单项选择题
At 1810，you sight a buoy on your starboard side labeled “19”. This buoy marks（）.
A.the side of York Spit Channel B.the visibility limit of the red sector of Cape Henry Light C.the end of York Spit Channel D.the junction of the York Spit and York River Entrance Channels
单项选择题 At 1810，a red buoy bears 010° relative. This buoy marks（）.
单项选择题 At 0845，you are approaching the entrances to Thimble Shoal Channel. What channel must you use?（）
单项选择题 At 0815，visibility is excellent and you can see Montauk Point. Montauk Point Light is（）.
