Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 311°T, and the variation is 8°E. If the heading of your vessel at the time of the sighting is 305° per standard magnetic compass, what is the correct deviation?

Question

Accepted Answer

Option A: 2°W. True bearing of 311°T adjusted for 8°E variation gives magnetic heading 303°M. Comparing magnetic heading to standard compass heading of 305° PSC yields a 2°W deviation, per standard navigational rules for compass correction.