While entering a harbor on a course of 225° per gyrocompass, you take a bearing on a pair of range lights and get 220° per gyrocompass. The bearing on the chart is 217°T. The variation for the area is 6°W, and deviation is 2°W. What course would you steer per gyrocompass to make good a true course of 232°?

Correct Answer: Option C — 235°pgc

Gyro error is determined by comparing the observed range bearing (220°pgc) with the charted true bearing (217°T), yielding 3°E. Applying this error to the required true course of 232° yields 229°pgc. Correcting for variation (6°W) and deviation (2°W) gives the final steering course of 235°pgc.