You are steering a magnetic compass course of 075°. The variation for the area is 10°W, and the compass deviation is 5°E. What is the true course you are steering?
Official USCG Answer & Rule Citation
Correct Answer: Option C — 070°T
Apply the compass error formula: True = Compass + Deviation + Variation (Can Dead Men Vote Twice At Elections). With a compass course of 075°, 5°E deviation, and 10°W variation, the net error is 5°W. Applying this to the compass course results in a true course of 070°T.
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