Your vessel is on course 312°pgc and you sight a lighthouse dead ahead at a range of 10 miles. The gyro error is 3°E. What course would you steer to leave the lighthouse 1.5 miles abeam to starboard?

Correct Answer: Option C — 304°pgc

Standard piloting and gyro correction procedures dictate converting gyro angles to true or working directly in gyro compass units. Factoring the 10-mile dead ahead sight and 1.5-mile starboard beam offset yields 304°pgc.