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USCG Exam PracticeEstimated position from current set & drift

Under 33 CFR §164.11, the person directing the movement of a vessel is prohibited from doing which of the following when fixing the vessel's position?

  1. A. Using electronic navigational equipment as the sole means of fixing position
  2. B. Using geographic reference points in combination with hydrographic contours
  3. Using buoys as the sole means of fixing positionCorrect
  4. D. Using a running fix derived from a single advanced LOP

Why C is correct

33 CFR §164.11(e) explicitly states that buoys alone are not to be used to fix the vessel's position. The regulation's note clarifies that buoys may corroborate a fix or establish an estimated position when no other aids are available, but they cannot constitute a fix.

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Under 33 CFR §164.11, the person directing the movement of a vessel… — USCG Exam Practice · CaptainsGround