OUPV & 100-Ton Master · Operations — Alcohol Limit (Commercial)
The blood-alcohol concentration at or above which a crewmember on a commercial vessel is considered intoxicated under Coast Guard rules is:
- A0.02%
- B0.08%
- C0.10%
- D0.04%✓ Correct
Explanation
For crewmembers of commercial vessels the threshold is 0.04% BAC (stricter than the 0.08% recreational/operating-under-the-influence limit). A mariner at or above 0.04% — or impaired at any level — is in violation and may face suspension and revocation proceedings.
Authority: 46 CFR 16.05; 33 CFR 95
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