Compass Error by Visual Range Practice Problem 1

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Compass Error by Visual Range Practice Problem 1
1. Your vessel is proceeding up 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 283° T, and the variation is 13° E. If the heading of your vessel at the time of the sighting is 278° per standard compass, what is the deviation?
a. 5° E
b. 5° W
c. 8° E
d. 8° W
Answer = d