🔍 Key Concepts

• Plotting a course between two positions using latitude and longitude on the chart • Converting true course to magnetic, then to standard compass using variation and deviation • Understanding that psc (per standard compass) means you must apply both variation and deviation correctly

💭 Think About

• After plotting both positions, what is the direction (true course) from your vessel to Rudee Inlet when measured at the center of the compass rose? • What is the local magnetic variation in this area, and is it east or west? How does that change true to magnetic? • What is the deviation on the relevant heading from the deviation table, and how do you correctly move from magnetic to standard compass using the TVMDC relationship?

✅ Before You Answer

• Verify your plotted line actually runs from the given vessel position TO Rudee Inlet, not the other way around • Double-check the sign and order in your TVMDC conversion (True–Variation–Magnetic–Deviation–Compass) so you don’t add when you should subtract • Confirm your final answer is clearly labeled in psc (per standard compass), not in true or magnetic degrees