Question 60 RVR05 - Master of LT 100 GRT

The Correct Answer is B **Explanation for Option B (.04% BAC):** Under federal regulations governing commercial mariners and commercial vessels, the threshold for Boating Under the Influence (BUI) of alcohol is significantly lower than for recreational boaters or driving motor vehicles. Specifically, a Blood Alcohol Content (BAC) level of **.04%** or higher constitutes a violation of the laws prohibiting the operation of a commercial vessel while intoxicated. This strict standard reflects the higher duty of care and safety required of commercial operators. **Why the other options are incorrect:** * **A) .18% BAC:** This percentage is far above the federal threshold for commercial operators. While a level this high would certainly constitute a severe BUI violation, it is not the *minimum* level required to be in violation under commercial regulations. * **C) .06% BAC:** Although this is only slightly higher than the correct threshold, it is not the precise minimum standard set by federal regulations for commercial vessels. The federal standard is explicitly set at .04% BAC. * **D) .10% BAC:** This level is also significantly higher than the commercial threshold. It is also higher than the standard .08% BAC limit commonly used for recreational BUI and Driving While Intoxicated (DWI) laws in many jurisdictions.