Question 423Navigation General70% to pass
Your height of eye is 40 feet (12.2 meters). What is the approximate geographical distance at which Ambrose Light, NY, could be visible? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS".
AI Explanation
The correct answer is A) 21.0 nm.
The distance at which a light can be seen is determined by the height of the observer's eye and the height of the light above the water. Using the formula in the "Reprints from the LIGHT LISTS AND COAST PILOTS", with a height of eye of 40 feet (12.2 meters), the geographical distance at which Ambrose Light, NY, could be visible is approximately 21.0 nautical miles.
The other options are incorrect because they do not accurately reflect the calculation based on the given height of eye. Option B (19.5 nm) and Option C (18.3 nm) are too short, while Option D (22.8 nm) is too long for the provided information.
Related Questions
#421 The Light List indicates that a light has a nominal range of 18 miles and is 38 feet high. If the visibility is 6 miles and your height of eye is 15 feet, at which distance will you sight the light? #422 The Light List indicates that a light has a nominal range of 8 miles and is 48 feet(14.6 meters) high. If the visibility is 6 miles and your height of eye is 35 feet(10.7 meters), at what approximate distance will you sight the light? #424 What is the approximate geographic range of Race Rock Light, NY, if your height of eye is 27 feet (8.2 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS". #425 What is the approximate geographic range of Point Judith Light, Rhode Island, if your height of eye is 62 feet (18.9 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS". (use charted range of 20 miles as nominal range) #426 What is the approximate geographic range of Shinnecock Light, NY, if your height of eye is 24 feet (7.3 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS".