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

A compass course is 355°. Deviation is 4°E and variation is 9°W. What is the true course?

  1. A. 342°
  2. ✓ 350°Correct
  3. C. 360° (000°)
  4. D. 008°

Why B is correct

Correcting from compass to true (add east, subtract west): Compass 355° + 4°E deviation = Magnetic 359°; Magnetic 359° − 9°W variation = True 350°. Each error is applied at its proper step in the T-V-M-D-C sequence.

Cited:Bowditch Ch. 6 §602

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A compass course is 355°. Deviation is 4°E and variation is 9°W. Wh… — USCG Exam Practice · CaptainsGround