Boating While Intoxicated

New Hampshire law prohibits anyone from boating while intoxicated (BWI)—that is, operating any vessel (including vessels propelled by a motor or sail, canoes, kayaks, and stand-up paddleboards) while under the influence of alcohol, controlled drugs, or any combination of alcohol and controlled drugs. Alcohol and drugs cause impaired balance, blurred vision, poor coordination, impaired judgment, and slower reaction times. Alcohol is a major contributor to boating accidents and fatalities.

The following conditions determine if you are boating under the influence.

• If your blood alcohol concentration (BAC) is 0.08% or greater by weight of alcohol as determined by a breath, blood, or urine test, you are considered to be under the influence of alcohol.
• If your BAC is greater than 0.03% but less than 0.08% by weight of alcohol as determined by a breath, blood, or urine test, that fact along with other evidence can be used to determine if you are under the influence.