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USCG Exam PracticeCourse to steer to compensate for current

An estimated position (EP) differs from a dead-reckoning (DR) position in that the EP accounts for which additional factor?

  1. A. Compass deviation
  2. ✓ Estimated set and drift of the currentCorrect
  3. C. Variation between true and magnetic north
  4. D. Distance run through the water only

Why B is correct

The EP is derived by laying off the current's set and drift vector from the DR position. The DR position itself uses only course steered and distance run, ignoring current and leeway.

Cited:Bowditch Ch. 8 §803Bowditch Ch. 8 §801

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An estimated position (EP) differs from a dead-reckoning (DR) posit… — USCG Exam Practice · CaptainsGround