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- Q134 - Navigation Problems: Near Coastal
474. 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 022°.
PSC PGC
030.5° 024°
061.5° 054°
092.0° 084°
122.5° 114°
152.0° 144°
181.0° 174°
210.0° 204°
239.5° 234°
269.0° 264°
298.0° 294°
327.5° 324°
358.5° 354°
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« Go to questions from category Q134 — Navigation Problems: Near CoastalThe deviation at a magnetic compass heading of 022 is approximately 0 due to linear interpolation between swing points. Gyro error and variation must be accounted for when determining deviation.
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