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USCG Exam PracticePlotting with variation and deviation (T-V-M-D-C)

You plot a true course of 085° on the chart. Variation is 10°W and deviation is 4°E. What is the compass course to steer?

  1. A. 079°
  2. B. 099°
  3. ✓ 091°Correct
  4. D. 071°

Why C is correct

Converting true to compass (uncorrecting): add westerly errors, subtract easterly. True 085° + 10°W variation = magnetic 095°; 095° − 4°E deviation = compass 091°. (Bowditch Ch. 6 §602)

Cited:Bowditch Ch. 6 §602

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You plot a true course of 085° on the chart. Variation is 10°W and… — USCG Exam Practice · CaptainsGround