Question 172Navigation General

70% to pass

The Light List shows that a navigational light has a nominal range of 18 miles and a height above water of 22 feet (6.7 meters). Your height of eye is 16 feet

A A
B B
C C
D D
AI Explanation

The correct answer is A. The nominal range of a navigational light depends on the height of the light above the water and the observer's height of eye. According to the information provided, the navigational light has a nominal range of 18 miles and a height above water of 22 feet (6.7 meters). The observer's height of eye is 16 feet. Using the formula for calculating the distance of visibility, the maximum distance at which the light can be seen is approximately 14.7 miles, which corresponds to answer choice A. The other answer choices are incorrect because they do not accurately reflect the distance of visibility based on the given information.

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