Enroute from Rio to Montevideo, the true course is 215°; the gyro error is 2° west. A north wind causes 3° leeway. What course would you steer per gyrocompass to make good the true course?

Correct Answer: Option B — 220°pgc

A north wind causes 3° leeway, pushing the vessel to the south. To maintain a 215°T track, you must steer 218°T. With a gyro error of 2°W (Gyro Least is Best), add the error to the true course to obtain the gyro heading: 218° + 2° = 220°pgc.