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Chapter 4: The Legal Requirements of Boating
Alcohol and Drugs

Delaware law prohibits anyone boating under the influence (BUI)—that is, operating a vessel, or manipulating water-skis or similar devices, while under the influence of alcohol or any drug or both. Alcohol and drugs cause impaired balance, blurred vision, poor coordination, impaired judgment, and slow reaction time. Alcohol contributes to about one-third of all boating accidents. Read more about the effects and risks of consuming alcohol in Chapter 5.

Delaware law states that a person is considered to be “under the influence” if:

  • He or she has a blood, urine or breath alcohol concentration of 0.08% or higher or...
  • He or she is under the influence of alcohol, drugs or any combination of alcohol and drugs to a degree which impairs his or her normal mental or physical abilities to exercise clear judgment, and sufficient control and care in the operation of the vessel

Delaware law establishes the following penalties:

  • Those convicted of operating under the influence of alcohol and/or drugs will:
    • Be fined up to $1,000 and imprisoned up to 6 months for a first offense
    • Be fined up to $2,000 and imprisoned up to 18 months for a second offense
    • Be fined up to $3,000 and imprisoned up to two years for a third offense
    • If under 17 years of age, be fined an additional amount and be required to complete up to 80 hours of public service
  • By operating any vessel on Delaware waters, you have consented to be tested for the presence of alcohol and/or drugs if requested by a peace officer. Persons refusing to submit to testing will be prohibited from operating on Delaware waters for one year.

Don't drink and boat!

Areas of Impairment Due to Blood Alcohol Concentration (BAC)

Areas of impairment due to blood alcohol concentration

Because you can drink faster than your system can burn off the alcohol, there is an increasing level of alcohol in your blood. This level is referred to as Blood Alcohol Concentration (BAC).

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The Handbook of Delaware Boating Laws and Responsibilities

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