The true course between two points is 119°. Your gyrocompass has an error of 3°E. You allow of 4° leeway for a south-southwest wind. What gyro course should be steered to make the true course good?

Correct Answer: Option D — 120°pgc

A SSW wind pushes the vessel toward the NNE. To maintain 119°T, steer 4° to the right (123°T). With 3°E gyro error, the gyro course is 123°T minus 3°E error, resulting in 120°pgc. Always apply leeway to the desired track before correcting for gyro error.