Boating is one of the most fun things you can do in the Golden State, whether you’re fishing with friends, feeling the salt spray on your face from a jetski, or relaxing in the sunlight. When it comes to boating, drinking often comes up too: after all, how many commercials, TV shows, and songs do we know of that glamorize alcohol on a boat?

A lot.

But, you’ve probably thought before that, just like with driving, there are probably some rules around drinking and boating in California — and there are. Since alcohol can quickly affect everything from judgment to operating ability, there are laws in place to keep every California boater, swimmer, and passerby safe on the water.

Here’s our guide to staying safe and legal with (and without) a drink in hand on California waters.

Four young adults on a boat, not drinking and boating in California concept.

Can I Drink on a Boat in California?

In California, you may not operate any vessel under the influence of alcohol or drugs — this includes everything from a fishing boat to a jet ski. Being under the influence of alcohol means having a blood alcohol content level (BAC) of .08% or higher.

This also applies to driving a car in the Golden State, and it is pretty consistent across the country. If you operate a commercial vessel in California, you may face penalties at a BAC of .04% or greater.

While the laws are a little different on a vessel — for instance, there aren’t any open container laws on a boat — the intoxication levels and rules are the same. If you’re found operating a vessel while intoxicated in California, you may face steep fines and jail time and lose your boating license and (potentially) your driver’s license.

As a boat driver or passenger, you can enjoy alcohol responsibly — preferably back at the dock — but operators may not reach any level of intoxication.

When Can I Drink on a Boat in California?

You may drink responsibly on boats in California, though boat operators may not become intoxicated. However, the safest approach to boating and alcohol is to avoid it.

Leave the booze on the dock and enjoy the water without it!

Overhead view of a boat driving in a circle, avoid drinking and boating in California concept.

What are the Penalties for Drinking and Boating in California?

In California, a boater found operating a vessel under the influence can be convicted of Boating Under the Influence — or BUI — if their BAC is greater than .08%. Those with a BAC of greater than .04% may also be given a BUI if they are operating a commercial vessel. 

A BUI is counted the same as a DUI or Driving Under the Influence, meaning that you may also lose driving privileges for automobiles and boats. In California, the potential BUI fines are as follows:

  • BUI first offense: Misdemeanor charges, up to $1,000 fine, and up to six months in jail
  • BUI subsequent offense: Misdemeanor charges, up to one year in jail, and up to $1,000 fine

Note that the penalties may substantially increase with bodily injury.

The Effects of Alcohol

Here’s why it’s safest to avoid drinking while on a boat, especially if you’re the driver.

Drinking while boating can turn poorly quickly . . . no matter what state you might be in. Heat, reflection, water, and sunlight can majorly magnify alcoholic effects, which means that drinking alcohol can quickly affect everything from your judgment to your balance.

We always recommend drinking very little, if at all, while boating since drinking causes:

  • Less concentration, worse judgment, and slower processing times
  • Slower reaction and response
  • Reduced motor skills, in and out of the water
  • Accelerated hypothermia
  • A lack of ability to distinguish between good and bad decisions

Protecting yourself and others while operating a boat requires all of your focus and awareness. Drinking alcohol can inhibit your ability to react quickly to avoid a boating accident.

A boat driving on the water with people in it, safe boating concept.

How Common Are Alcohol-Related Boating Instances in California?

While drinking alcohol might seem fun, it has been a massive cause of boating accidents in the state of California. According to the California Department of Parks and Recreation, almost 25% of fatal boating accidents involve alcohol in some way, whether on the part of the operator or a passenger.

In fact, BUIs are the leading factor in fatal recreational watercraft accidents.

What About Being Under the Influence of Drugs on California Waters? 

In California, it is illegal to operate any vessel under the influence of drugs. Just like with alcohol, drugs are a firsthand contributor to slower reaction times and increased accidents. 

What Else Do I Need to Know?

At BOATsmart!, we think there’s nothing quite as fun as a day out on the boat . . . but only when it’s safe. When drugs and alcohol come into the boating picture, boating becomes more dangerous for everyone involved.

In California, all boaters under the age of 35 are already required to hold a California Boater Card and take a boating safety course. By 2025, each and every California boater will need the same — which is the first step in creating a safer boating environment for everyone.

Four men wearing lifejackets and holding boater education cards while on the dock, boating safety concept.

Stay Safe Without Drinking and Boating in California

With BOATsmart!’s California boating safety course, California boaters will learn what they need to know about boating safely while having fun. Our curriculum is engaging, narrated, and animated for maximum learning and enjoyment, which is why it’s the top choice for California boaters. 

So, take the course, get your boater safety card, leave the alcohol at the dock, and enjoy the water!

Originally published February 11, 2021. Content most recently reviewed and updated August 7, 2024.