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USCG Exam Practice · Estimated position from current set & drift

Under 33 CFR §164.11, the person directing the movement of a vessel is required to know which of the following before transiting an area?

  1. APredicted set and drift, current velocity and direction, and tidal state✓ correct
  2. BPredicted set and drift only; tidal state is not required
  3. CCurrent velocity and direction only; set and drift are not separately required
  4. DTidal state only; current data is the responsibility of the pilot

Why A is correct

33 CFR §164.11(l), (m), and (n) each impose separate, distinct requirements: current velocity and direction, predicted set and drift, and tidal state must all be known by the person directing the vessel's movement. None of these requirements subsumes the others.

Cited:33 CFR §164.11

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