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?

Correct Answer: Option A — 1.5°W

Gyro error is found by comparing charted range true bearing against observed gyro bearing. With true direction at 221.5 degrees and gyro bearing at 223 degrees, the gyro is 1.5 degrees high to the right, representing 1.5 degrees Westerly error.