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USCG Exam PracticeDead reckoning — DR plot maintenance

A navigator obtains a bearing on a lighthouse at 0800 and cannot obtain a second simultaneous bearing. At 0830 the navigator advances the 0800 LOP along the DR track and crosses it with a new bearing. The resulting position is called a:

  1. A. Fix
  2. Running fixCorrect
  3. C. DR position
  4. D. Estimated position

Why B is correct

Bowditch Ch. 7 §702 defines a running fix as a fix obtained when LOPs cannot be taken simultaneously; the first LOP is advanced along the DR track to the time of the second observation and the intersection is the running fix. A fix requires simultaneous LOPs per §701.

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A navigator obtains a bearing on a lighthouse at 0800 and cannot ob… — USCG Exam Practice · CaptainsGround