You swung ship and compared the magnetic compass against the gyro compass to find deviation. Gyro error is 2°W. The variation is 8°W. Find the deviation on a true heading of 157°.

Correct Answer: Option A — 1.5°W

Compass Error is the algebraic sum of variation and deviation. Given a True Heading of 157° and a gyro error of 2°W, the True Heading is confirmed. With a variation of 8°W, the deviation is calculated by subtracting variation from the compass error, resulting in 1.5°W.