You desire to make good a true course of...

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Question 1 of 2066636eea28f7522a1c51b091

You desire to make good a true course of 007°. The variation is 5°E, magnetic compass deviation is 3°W, and gyrocompass error is 2°E. A southwest by west wind produces a 2° leeway. What is the course to steer per standard magnetic compass to make the true course good?

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Question 1 of 20

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🔍 Key Concepts

• Relationship between true, magnetic, compass, and gyro courses (T – V – M – D – C ladder) • How to apply variation and deviation signs correctly (East is least, West is best) • Effect of leeway on the required heading (from which side is the wind blowing?)

💭 Think About

• Start from the desired true course and work step-by-step to find the standard magnetic compass course. Which order should you apply variation, deviation, and leeway? • The wind is southwest by west. From which direction is it blowing, and does that push your vessel to the left (port) or right (starboard) of your track? How does that change your steering course? • When converting from true to compass using variation and deviation, do you add or subtract an E or W correction at each step?

✅ Before You Answer

• Write out the full T – V – M – D – C chain with signs clearly marked for each correction • Confirm the wind direction (SW by W) and whether the resulting leeway must be added to port or starboard to stay on a true course of 007° • Before choosing an answer, make sure your final number matches the direction of all corrections: E corrections move the heading in one direction, W corrections in the opposite—double-check you’re consistent

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