Your vessel is proceeding down a channel, and you see a pair of range lights that are in line dead ahead. The chart indicates that the direction of this pair of lights is 229°T, and variation is 6°W. If the heading of your vessel at the time of the sighting is 232° per standard magnetic compass, what is the deviation?

Question

Accepted Answer

Option B: 3°E. Applying the navigational relationship True +/- Variation = Magnetic +/- Deviation, the known true range bearing of 229°T and 6°W variation establish a magnetic bearing of 235°M. Comparing this to the standard magnetic heading of 232° yields a 3°E deviation.