Your GPS position is LAT 36°59.0'N, LONG...

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Question 1 of 2066636eea28f7522a1c51b2d1

Your GPS position is LAT 36°59.0'N, LONG 75°48.6'W. What is the course per standard magnetic compass to a position one mile south of Cape Charles Lighted Bell Buoy "14" (LAT 37°07.4'N, LONG 75°41.0'W)?

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Question 1 of 20

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🔍 Key Concepts

• Plot the two positions carefully on the chart and mark the point one mile south of Cape Charles Lighted Bell Buoy "14" • Use great circle / rhumb line assumptions on a short distance and measure the true course from your GPS position to the destination • Apply variation and deviation in the correct order to convert from true course to standard magnetic compass (psc)

💭 Think About

• After plotting, what is the approximate true bearing from your vessel to the point one mile south of Buoy "14"? Is it more easterly or northerly? • What is the local magnetic variation in this area on your exam chart, and is it east or west? How does that affect converting from true to magnetic? • What is the deviation for the heading closest to your intended course on the deviation table, and how does that change the course to get psc?

✅ Before You Answer

• Double-check that you measured the course from your vessel to the destination, not the reverse • Confirm you applied the conversion sequence correctly: True → Magnetic → Compass (psc), with the correct signs for variation and deviation • Verify that your final course per standard compass is consistent with the general direction from your starting latitude/longitude to the destination (northeast vs. east-northeast, etc.)

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