Lake Michigan, Muskegon Lake, Spring Lake, Reeds Lake, the Grand River — West Michigan is on the water all summer, and the DNR and marine patrols are out with it. A boating under the influence charge is a criminal charge, it goes on your record like any other, and people are often astonished to learn it exists at all.
The Law
MCL 324.80176 makes it unlawful to operate a vessel while under the influence, and it uses the same numbers you already know from the road: a blood alcohol content of 0.08 grams or more per 100 milliliters of blood, per 210 liters of breath, or per 67 milliliters of urine. For anyone under 21, the threshold drops to 0.02 — Michigan's zero tolerance rule applies on the water too.
Penalties under MCL 324.80177
- First offense: a misdemeanor — up to 93 days imprisonment, and/or a fine of $100 to $500, and/or community service of up to 45 days.
- Second offense within 7 years: a fine of $200 to $1,000, plus jail and/or community service.
- Third or subsequent offense: a felony — imprisonment of not less than 1 year and not more than 5 years, or a fine of $500 to $5,000, or both.
When someone is hurt or killed
- Causing death: a felony under MCL 324.80176 — up to 15 years, or a fine of $2,500 to $10,000, or both.
- Causing serious impairment of a body function: a felony — up to 5 years, or a fine of $1,000 to $5,000, or both.
Why BUI Cases Are Often More Defensible Than OWI Cases
The roadside evidence a prosecutor relies on in a car case does not transfer cleanly to a boat, and that is a real advantage:
- There is no lane to weave out of. The observations that justify a traffic stop mostly do not exist on open water, and marine patrols often make contact for safety-equipment checks rather than any suspicion of impairment.
- Standardized field sobriety tests were designed for solid ground. Balance testing on a rocking deck, or on a dock after hours on the water, is asking someone to fail. Sun, wind, dehydration, engine noise, and "boater's fatigue" all degrade performance in ways that have nothing to do with alcohol.
- Operation can be genuinely disputed. Who was at the helm on a boat full of people is not the settled question it usually is in a car.
A Boating Conviction Can Still Reach Your Driver's License
Do not assume this stays on the water. Michigan treats repeat alcohol offenses as a pattern, and a BUI conviction becomes part of your record — it can affect how a later drunk driving case is charged and how a court views you at sentencing. Treat it as seriously as you would an OWI.
Frequently Asked Questions
Is it illegal to drink and drive a boat in Michigan?
Operating a vessel with a blood alcohol content of 0.08 or more violates MCL 324.80176, the same threshold that applies on the road. For operators under 21 the limit is 0.02. Having a drink aboard is not itself the offense — operating while over the limit or under the influence is.
What is the penalty for a first BUI in Michigan?
Under MCL 324.80177 a first offense is a misdemeanor punishable by up to 93 days imprisonment, a fine of $100 to $500, and/or community service of up to 45 days.
Is boating under the influence a felony in Michigan?
It can be. A third or subsequent BUI is a felony carrying 1 to 5 years, or a fine of $500 to $5,000, or both. Causing a serious impairment of a body function is a 5-year felony, and causing a death is a felony punishable by up to 15 years.
Do field sobriety tests work on a boat?
Poorly, and that is often the defense. The standardized tests were validated for stable ground and sober conditions. A deck that is moving, hours of sun and wind, dehydration, and engine vibration all degrade balance and coordination in people who have had nothing to drink at all.
Talk to Me Before You Talk to Anyone Else
I am Shawn Haff, and I defend drunk driving cases across Kent, Ottawa, Allegan, Barry, Ionia, Muskegon, Newaygo, and Van Buren counties. The call is free, I answer my own phone, and on an OWI the clock starts running the day you are arrested. Call 616-438-6719 or send me a message.