Question 437Navigation General70% to pass
To measure distance on a Mercator chart between the parallels of LAT 34°30'N and LAT 31°30'N, which 30 mile scale should be used?
AI Explanation
The correct answer is C) 32°45'N to 33°15'N.
On a Mercator chart, the 30 mile scale to use when measuring distance between the parallels of LAT 34°30'N and LAT 31°30'N is the scale centered on the middle latitude, which is 32°45'N to 33°15'N. This is because the Mercator projection distorts distances, and using the scale centered on the middle latitude provides the most accurate measurement.
The other options are incorrect because they do not correspond to the middle latitude between the given parallels. Option A is too far north, option B is slightly too far north, and option D is too far south.
Related Questions
#435 You wish to measure the distance on a Mercator chart between a point in latitude 43°30'N and a point in latitude 40°30'N. To measure 30 miles at a time, you should set the points of the dividers at _______________.#436 Which statement is TRUE concerning a Mercator projection? #438 What area of the earth cannot be shown on a standard Mercator chart? #439 Which nautical charts are intended for coastwise navigation outside of outlying reefs and shoals? #440 A chart with a scale of 1:45,000 is a _______________.