Can You Bring Cannabis on a Boat in Florida? Know the Rules

Thinking about bringing your medical cannabis on the water in Florida? Here's what the law actually says — and what you need to know before you cast off.

Can You Bring Cannabis on a Boat in Florida? Know the Rules

Florida's coastline is stunning, and boating is a way of life for many residents and visitors in the Sarasota and Tampa Bay area. If you're a medical marijuana patient, you may be wondering: can you bring your cannabis on the boat?

The short answer: it's complicated — and risky. Here's what you need to know.

Florida State Law: Medical Cannabis on the Water

Florida's medical marijuana program allows registered patients to possess and use cannabis — but only in private, enclosed spaces. The law prohibits consuming marijuana:

In public
In a moving vehicle
In any place open to the public

Boats occupy a gray area. A private boat in Florida waters could be considered a private space — but in practice, law enforcement treats it very differently.

Federal Waters Are a Whole Different Story

This is where it gets serious. Once your boat moves beyond 3 nautical miles from shore, you are in federal waters — and federal law still classifies cannabis as a Schedule I controlled substance.

This means:

U.S. Coast Guard can board and search your vessel in federal waters
Possessing any amount of cannabis can result in federal charges
Your Florida medical marijuana card provides zero protection under federal law
Even hemp-derived CBD products with trace THC can be problematic

What About Florida's Inland Waters and Bays?

In Florida's inland waterways, bays, and within the 3-mile coastal limit, you're under state jurisdiction — where your MMJ card offers some protection.

However:

Consuming on a boat is still prohibited if the vessel is on a public waterway
Open containers of any intoxicating substance can draw law enforcement attention
Boating Under the Influence (BUI) laws apply to cannabis just like alcohol — impairment on the water is illegal

Boating Under the Influence (BUI)

Florida takes BUI seriously. You can be charged with BUI if:

Your normal faculties are impaired by cannabis
Your blood THC level is above the legal threshold

Penalties mirror DUI laws and can include:

Fines up to $1,000 for a first offense
Jail time
Suspension of boating privileges
A permanent criminal record

Bottom line: Do not consume cannabis and operate a boat.

Can You Store Cannabis on Your Boat?

If you're staying within Florida state waters (within 3 miles of shore) and keeping cannabis in a sealed, original container and not consuming it, you're in a much safer position as a registered Florida MMJ patient.

Best practices:

Keep it in the original dispensary packaging
Store it below deck or in a locked compartment
Have your MMJ card and photo ID accessible
Never consume while operating or aboard on public waters

What About Anchoring in a Private Cove?

Anchoring in a secluded area in state waters is technically more private — but you're still on a public waterway and subject to law enforcement boarding. There is no guaranteed "private space" protection on Florida's navigable waters.

The Safest Approach

If you're a medical marijuana patient who enjoys boating in Sarasota or Tampa Bay, here's the safest path:

✅ Leave cannabis at home or in your car when boating
✅ Never consume on the water
✅ Stay informed — laws evolve, and enforcement varies
✅ Consult a Florida attorney if you have specific legal concerns
❌ Never bring cannabis into federal waters

The Bottom Line

Florida's boating culture and its medical marijuana program exist in an uneasy legal overlap. The risks — especially in federal waters — are significant. When in doubt, leave it ashore and enjoy the water with a clear head.

This article is for informational purposes only and does not constitute legal advice. Laws are subject to change — consult a licensed Florida attorney for guidance specific to your situation.

Can You Bring Cannabis on a Boat in Florida? Know the Rules