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

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Question 1 of 2066636eea28f7522a1c51b09d

You desire to make good a true course of 236°. The variation is 8°E, magnetic compass deviation is 1°E, and gyrocompass error is 3°W. A south-southeasterly wind produces a 1° leeway. What is the course to steer per standard magnetic compass (psc) to make the true course good?

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Question 1 of 20

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🔍 Key Concepts

• True–Gyro–Magnetic–Compass (T–G–M–C) conversion table and the standard memory aid "True Virgins Make Dull Company" or similar • How to apply variation and deviation signs correctly (East vs West) when converting between true and compass courses • How leeway from a south-southeasterly wind will push the vessel and how that changes the heading you must steer

💭 Think About

• Start from the desired true course and step-by-step convert it to gyro, then to magnetic, then to compass, keeping track of whether you are adding or subtracting each correction • Think about the direction a south-southeasterly wind (coming from about 157.5°) will push your vessel: will it set you to the left or right of your heading, and therefore should you steer more to the left or right to compensate? • After getting a preliminary compass course from the T–G–M–C work, adjust it by the leeway in the correct direction before comparing it to the answer choices

✅ Before You Answer

• Be sure you’re converting in the correct direction: from True to Compass, not the other way around • Confirm your signs: East is least, West is best when going from true to magnetic; apply a consistent sign convention for both variation and deviation • Check that your final answer is a psc (standard magnetic compass) course, not a gyro course, and that you have already included leeway before choosing from A–D

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