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- Q134 - Navigation Problems: Near Coastal
391. Two beacons form a range in the direction of 221.5°T. The range is seen in line from your vessel bearing 223° per gyrocompass. The variation in the area is 4°E. What is the error of your gyrocompass?
The gyrocompass error is 1.5W because the gyro bearing (223G) exceeds the true bearing (221.5T) by 1.5, and a higher gyro reading indicates a West error.
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