You are 3 miles due east of Montauk Point Light. What is the course per standard magnetic compass to LAT 41°00.0'N, LONG 71°30.0'W?
• Plotting your position 3 miles due east of Montauk Point Light on the chart before drawing any course line • Converting the true course to magnetic by applying variation correctly (east or west?) • Converting magnetic to standard magnetic compass course by applying deviation with the proper sign
• Where exactly on the chart will you mark the point that is 3 miles due east of Montauk Point Light, and how will that affect the course you draw to the given latitude/longitude? • When going from true to magnetic, do you add or subtract a west variation? Think about the memory aid "True Virgins Make Dull Companions" and the direction of the corrections. • After you have the magnetic course, how do you correctly apply a westerly deviation to get a standard compass course, and do you add or subtract it?
• Confirm you’ve measured the true course from the correctly plotted starting point to LAT 41°00.0'N, LONG 71°30.0'W using the appropriate meridian for longitude. • Verify that you are applying variation and deviation in the correct order: True → Magnetic → Compass. • Double‑check the signs (add vs. subtract) of both variation and deviation and that you are using the values from the exam’s chart and deviation table, not from memory.
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