You are heading 328°pgc to make good a course of 332°T, allowing 3° leeway for westerly winds and 1°E gyro error. The variation is 17°E. What should your heading be by standard magnetic compass to make good 332°T.

Correct Answer: Option A — 315°psc

Convert gyro heading to true using gyro error, adjust for leeway to establish true course made good, and reverse apply variation and deviation to determine the required standard magnetic compass heading of 315°psc.