Boating Coach US
Alcohol and drugsQuestion 298 of 352

Can an operator with a lower blood alcohol level still be under the influence?

  1. No, the level decides all cases
  2. Yes, but only on a commercial boat
  3. No, if the boat is slow
  4. Yes, if the effects are clear from observation
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Correct answer: Yes, if the effects are clear from observation

Obvious effects on manner, speech or movement can show impairment at any level.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 95: Operating a Vessel While Under the Influence of Alcohol or a Dangerous Drug, § 95.020 Standard for under the influence of alcohol or a dangerous drug

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Questions last reviewed: 18 October 2026