A person is found operating a vessel while under the influence of alcohol. He/she is liable for __________.

Correct Answer: Option D — a civil penalty of not more than $5,000

Operating a vessel while under the influence of alcohol or dangerous drugs is strictly prohibited. Under 46 U.S.C. 2302, an individual operating a vessel in a negligent manner or while intoxicated is liable for a civil penalty of not more than $5,000, in addition to potential criminal charges.