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- Apprentice Mate Steersman (Great Lakes and Inland (Any Appropriate Tonnage)) »
- Q420 - Navigation General: Great Lakes and Inland
77. Entering a harbor, you take a bearing on a range and get 338° per gyrocompass (pgc). The true bearing from the chart is 340°T. Variation for the area is 14°E. Your course is 329° per standard magnetic compass (psc) and 338°pgc. What is the deviation on this heading?
The deviation is 3W because the compass reading (329) is higher than the magnetic heading (326).
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