Question 463Navigation General

70% to pass

The Light List shows a lighted aid to navigation on the right bank. This means that the light can be seen on the port side of a vessel _______________.

A descending the river
B ascending the river
C proceeding towards sea
D crossing the river
AI Explanation

The correct answer is B) ascending the river. A lighted aid to navigation on the right bank (or starboard side) of a river or channel means that the light can be seen on the port side of a vessel ascending or going upstream. This is because the vessel is keeping the lighted aid to navigation on its starboard (right) side as it travels upstream. The other options are incorrect because: A) a lighted aid to navigation on the right bank would not be visible on the port side of a vessel descending the river, C) a lighted aid to navigation on the right bank would not be visible on the port side of a vessel proceeding towards the sea, and D) a lighted aid to navigation on the right bank would not be visible on the port side of a vessel crossing the river.

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Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG National Maritime Center
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