Your vessel's heading is 330°pgc and 345°psc...

Question 1 / 2066636eea28f7522a1c51b7b7

Question 1 of 2066636eea28f7522a1c51b7b7

Your vessel's heading is 330°pgc and 345°psc with a 2°E gyro error. What is the deviation on this heading?

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Question 1 of 20

66636eea28f7522a1c51b7b7

Your vessel's heading is 330°pgc and 345°psc with a 2°E gyro error. What is the deviation on this heading?

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🔍 Key Concepts

• Relationship between true, gyro, magnetic, compass (TGMC) and how errors are applied • Definition and sign convention for gyro error vs deviation • How to compare psc (per standard compass) and pgc (per gyro compass) to extract deviation

💭 Think About

• Start from the given gyro heading (pgc) and apply the stated gyro error to find the equivalent true heading. What direction do you apply the error? • From that same true heading, what should the magnetic/standard compass heading (psc) be if there were no deviation? Then compare it to the actual psc to see the deviation. • Think about this: if the compass is reading more east or more west than it should, does that mean the deviation is labeled E or W?

✅ Before You Answer

• Be clear on the sign of gyro error: "2°E" means gyro reads east (higher) or west (lower) than true? Verify that first. • Use a consistent conversion chain (e.g., True ↔ Gyro and True ↔ Compass) and write it out before doing any arithmetic. • After you compute a candidate deviation, rebuild the headings forward (from true to gyro and true to compass) to see if you get back to 330°pgc and 345°psc. This catches sign mistakes.

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Question 1 of 20

Your vessel's heading is 330°pgc and 345°psc with a 2°E gyro error. What is the deviation on this heading?

4°E

0°

3°W

7°W

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Question 1 / 2066636eea28f7522a1c51b7b7

Question 1 of 2066636eea28f7522a1c51b7b7

Your vessel's heading is 330°pgc and 345°psc with a 2°E gyro error. What is the deviation on this heading?

Back

Question 1 of 20

66636eea28f7522a1c51b7b7

Your vessel's heading is 330°pgc and 345°psc with a 2°E gyro error. What is the deviation on this heading?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed