All states have laws against boating under the influence (BUI), which make it a crime to operate a boat or watercraft on a public waterway while under the influence of alcohol or drugs.
In Michigan, operating a boat or watercraft under the influence of alcohol or drugs is illegal and is known as Boating Under the Influence (BUI). According to Michigan state law, a person is considered to be under the influence if they have a Blood Alcohol Content (BAC) of 0.08% or higher. However, individuals can also be charged with BUI if their BAC is between 0.02% and 0.07% if it is shown that the alcohol in their system significantly reduced their ability to operate the watercraft safely. Penalties for BUI in Michigan can include fines, imprisonment, community service, and the potential loss of boating privileges. The state also has implied consent laws for boaters, meaning that by operating a watercraft, individuals implicitly consent to chemical tests to determine BAC if suspected of BUI. Refusal to submit to these tests can result in penalties such as fines and suspension of boating privileges.