You swung ship and compared the magnetic...

Study

Question 1 of 2066636ee928f7522a1c51a223

You swung ship and compared the magnetic compass against the gyrocompass to find deviation. Gyro error is 2°W. The variation is 8°W. Find the deviation on a magnetic compass heading of 166°.

PSC PGC 030.5° 024° 061.5° 054° 092.0° 084° 122.5° 114° 152.0° 144° 181.0° 174° 239.5° 234° 269.0° 264° 210.0° 204° 298.0° 294° 327.5° 324° 358.5° 354°

Back

Question 1 of 20

66636ee928f7522a1c51a223

You swung ship and compared the magnetic compass against the gyrocompass to find deviation. Gyro error is 2°W. The variation is 8°W. Find the deviation on a magnetic compass heading of 166°.

PSC PGC 030.5° 024° 061.5° 054° 092.0° 084° 122.5° 114° 152.0° 144° 181.0° 174° 239.5° 234° 269.0° 264° 210.0° 204° 298.0° 294° 327.5° 324° 358.5° 354°

No comments yet

Be the first to share your thoughts!

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

🔍 Key Concepts

• Relationship between true, gyro, magnetic, and compass headings (T-G-M-C-W) • How to correct gyro heading when gyro error is west • Using the swing table (PSC vs PGC) to interpolate deviation near a given heading

💭 Think About

• First, convert the given magnetic compass heading of 166° to the closest headings on the deviation table. Which two PSC values bracket 166°, and what are their listed deviations? • Use gyro error and variation to relate true, gyro, and magnetic headings. Think about the sign: what does a west gyro error mean for Gyro vs True? • Once you have an approximate deviation near 166° by interpolation, check if it is increasing or decreasing between the two table values. Does that trend match the answer choices?

✅ Before You Answer

• Be clear on the sign convention: "gyro error 2°W" means Gyro is west (less) than True or east (more) than True? Verify this before converting headings. • Confirm whether the listed PSC/PGC pairs already include gyro error, or if you must first correct PGC to True using gyro error, then to Magnetic using variation. • When interpolating between table points, ensure you are interpolating the deviation, not the raw headings. Check that your final deviation value and its direction (E or W) make sense with the surrounding table values.

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

Quick actions

— No credit card needed

Study

Question 1 of 2066636ee928f7522a1c51a223

You swung ship and compared the magnetic compass against the gyrocompass to find deviation. Gyro error is 2°W. The variation is 8°W. Find the deviation on a magnetic compass heading of 166°.

PSC PGC 030.5° 024° 061.5° 054° 092.0° 084° 122.5° 114° 152.0° 144° 181.0° 174° 239.5° 234° 269.0° 264° 210.0° 204° 298.0° 294° 327.5° 324° 358.5° 354°

Back

Question 1 of 20

66636ee928f7522a1c51a223

You swung ship and compared the magnetic compass against the gyrocompass to find deviation. Gyro error is 2°W. The variation is 8°W. Find the deviation on a magnetic compass heading of 166°.

PSC PGC 030.5° 024° 061.5° 054° 092.0° 084° 122.5° 114° 152.0° 144° 181.0° 174° 239.5° 234° 269.0° 264° 210.0° 204° 298.0° 294° 327.5° 324° 358.5° 354°

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