Question 336Navigation General70% to pass
The Light List shows that a navigational light has a nominal range of 15 miles and a height above water of 29 feet (8.8 meters). Your height of eye is 52 feet (15.8 meters) and visibility is 6.0 miles. At which approximate range will you first sight the light?
AI Explanation
The correct answer is B) 11.0 miles.
The explanation is as follows:
1. The formula for the distance at which a light can be seen is: D = 2.2 x √(h1 + h2), where D is the distance in nautical miles, h1 is the height of the light above the water in feet, and h2 is the height of the observer's eye above the water in feet.
2. Using the given information, the calculation is: D = 2.2 x √(29 + 52) = 2.2 x √81 = 2.2 x 9 = 19.8 miles. However, the visibility is limited to 6.0 miles, so the distance at which the light will first be sighted is 11.0 miles.
3. The other answer choices are incorrect because they do not accurately reflect the calculated distance based on the given information and the visibility limitation.
Related Questions
#334 Which light characteristic may be used on a special purpose mark? #335 Which of the buoys listed below could be used to mark an anchorage? #337 A special daymark is a _______________.#338 A survey (special purpose mark) buoy _______________.#339 The dumping of refuse in a lock is permitted _______________.