What Must Be Aboard a Vessel Under Florida Law?

Under Florida law, a vessel must have aboard a U.S. Coast Guard–approved wearable life jacket for every person, a working sound-producing device, proper navigation lights, and (for most motorized boats) a current fire extinguisher, visual distress signals on coastal waters, and an engine cutoff switch link. The exact list of what must be aboard a vessel under Florida law depends on the boat’s size, propulsion, and where you’re running it, but those items are the common core, and the registration certificate plus a boating safety card for younger operators round things out.¹

Life Jackets and a Throwable Device

Every vessel has to carry at least one Coast Guard–approved wearable personal flotation device for each person on board. The life jackets must be the right size for the wearer, in serviceable condition, and readily accessible. Buried at the bottom of a sealed storage bin doesn’t satisfy the rule.²

Boats 16 feet or longer also need one throwable device, a Type IV PFD such as a ring buoy or seat cushion. The throwable has to be immediately available on deck so it can be tossed to someone in the water without delay.²

Florida layers a child rule on top. Any child under six years old must wear a properly fitting, Coast Guard–approved life jacket at all times while on a vessel under 26 feet that is underway. Underway means any time the boat is not anchored, moored, tied to shore, or aground, so drifting counts.¹

Fire Extinguishers

Most motorized boats need a fire extinguisher aboard. The requirement applies to boats with permanently installed fuel tanks or enclosed spaces where gasoline fumes can collect: closed compartments under seats, enclosed engine rooms, built-in fuel systems. Open boats with portable tanks and no enclosed spaces are technically exempt.³

The rating system is changing. Boats with a model year of 2018 or newer must carry extinguishers rated 5-B or 20-B that are date-stamped. Older boats (model years 1953 through 2017) can still use B-I or B-II rated extinguishers if they’re in good and serviceable condition, or they can switch to the newer-rated models.³

How many you need scales with length, assuming no fixed suppression system is installed:

Under 26 feet: one 5-B (or one 20-B).
26 to under 40 feet: two 5-B, or one 20-B.
40 to under 65 feet: three 5-B, or a combination using 20-B substitutes.

A boat with an approved fixed fire suppression system can carry one fewer extinguisher in each category.³

Serviceability counts as much as the number. An extinguisher fails inspection if the pressure gauge reads in the red zone, the lock pin is missing, the nozzle is clogged, or the body shows significant corrosion. Disposable extinguishers more than 12 years old (based on the stamped date) must be replaced regardless of condition.³

A Sound-Producing Device

Every vessel needs some way to make an audible signal. Federal navigation rules set the specifics by length:

Under 39.4 feet (12 meters): some means of making an efficient sound signal. A portable air horn, whistle, or handheld compressed-gas horn works. There’s no formal specification, but it has to be loud enough to actually function.
39.4 feet and longer: a proper whistle meeting Coast Guard specifications.
65.6 feet (20 meters) and longer: a bell in addition to the whistle.

A dead air horn is the kind of thing an officer will flag during a safety inspection.⁴

Navigation Lights

Any vessel operating between sunset and sunrise, or in restricted visibility such as fog or heavy rain, must display proper navigation lights. Florida requires serviceable lights that comply with the federal navigation rules.¹

For most recreational powerboats under 65.6 feet, that means a red sidelight to port, a green sidelight to starboard, a white stern light visible from behind, and a white masthead light visible from ahead. Sailboats under power follow the same pattern. Sailboats under sail alone have different configurations, and vessels at anchor need an all-around white light. Burned-out bulbs are a real safety problem, not just a technicality, because other boaters use these lights to read your direction and size.

Florida also prohibits sirens and flashing, revolving, or occulting lights on vessels except where specifically allowed by the navigation rules.¹

Visual Distress Signals

Boats on coastal waters, including the Atlantic, the Gulf of Mexico, and connected bays and sounds, must carry visual distress signals. For boats 16 feet and longer, that means both daytime and nighttime signals. Smaller boats (under 16 feet), manually propelled boats, open sailboats under 26 feet without an engine, and boats in organized races are exempt during the day but still need nighttime signals if they’re out after sunset.⁵

Pyrotechnic signals (handheld flares, aerial flares, or smoke signals) satisfy the rule only if you carry at least three unexpired ones. Flares have expiration dates printed on them; expired flares don’t count. A Coast Guard–approved electronic distress signal, such as an LED signal light approved for day and night use, is an alternative that doesn’t expire.

Vessels operating only on inland lakes, rivers, and waterways that don’t connect to coastal waters are not subject to this requirement.

Engine Cutoff Switch Link

Federal law requires the operator of a covered recreational vessel to use an engine cutoff switch link whenever the boat is on plane or moving above displacement speed. A covered recreational vessel is one under 26 feet in overall length that is capable of producing 115 pounds or more of static thrust.⁶

The link can be a lanyard attached to the operator or a wireless device such as a fob. If the operator goes overboard or is thrown from the helm, the engine shuts down before the boat can circle back. Boats with the main helm inside an enclosed cabin are exempt from the use requirement, and boats built before the installation standard took effect, which were never required to have the switch installed, are also excluded.⁶

Florida adds its own rule: anyone operating a vessel used to instruct a water sport or activity must use an engine cutoff switch with an operative link whenever a participant is in the water.¹

Ventilation and Backfire Flame Arrestor

Gasoline-powered boats with enclosed engine or fuel tank compartments need a ventilation system to prevent explosive fume buildup. Boats built after August 1, 1980, must have at least two ventilation ducts, one intake and one exhaust, extending into the lower hull. Boats with gasoline engines in enclosed spaces also need a powered ventilation blower that can be run before starting the engine.⁵

Separately, every inboard gasoline engine (not outboards) must have a backfire flame arrestor secured to the air intake. It must be Coast Guard–approved or meet SAE J-1928 or UL 1111 standards.⁵

Registration Certificate and Numbers

Almost every vessel on Florida’s public waters must be titled and registered. The requirement covers all motorized vessels, personal watercraft, and non-motorized vessels 16 feet or longer, with exceptions for canoes, kayaks, racing shells, and rowing sculls regardless of length.⁷

The certificate of registration must be physically on board and available for inspection by a law enforcement officer whenever the vessel is in use.⁷ New buyers have 30 days to register the vessel; during that window, keep the bill of sale or other proof of purchase date aboard instead.

Your registration number has to be displayed on each side of the forward half of the vessel (or on each side of the rudder on airboats). The characters must be block type, at least three inches tall, in a solid color that contrasts with the hull, reading left to right.⁸

Boating Safety Education Card

Anyone born on or after January 1, 1988, who operates a vessel powered by a motor of 10 horsepower or more on Florida waters must carry two things at the helm: photographic identification and a Florida Boating Safety Education Identification Card (or an equivalent credential listed in the statute).⁹ The card proves completion of an approved safety course and does not expire.

Several operators are exempt:

Anyone licensed, or previously licensed, by the U.S. Coast Guard as a master of a vessel.
Operators on private lakes or ponds.
Anyone accompanied by a person 18 or older who holds the required card or is otherwise exempt, provided that person is responsible for the vessel’s safe operation.
Out-of-state boaters who carry photo ID and proof of completing an equivalent course in their home state.
Someone operating a vessel within 90 days of purchase with a qualifying bill of sale aboard.
Someone operating within 90 days of finishing the safety course, carrying photo ID and the course completion certificate.

¹⁰

Marine Sanitation and Discharge Rules

This section applies only if your boat has an installed toilet. Portable “porta-potty” units are not covered. Boats with installed toilets operating on U.S. navigable waters must have a Coast Guard–certified marine sanitation device. These come in three types: Type I and Type II devices treat sewage before discharge (Type I is limited to vessels 65 feet and under), and Type III devices are holding tanks that store sewage for pump-out ashore.¹¹

Florida has several federally designated no-discharge zones where no vessel sewage, treated or untreated, can be discharged overboard. These include Destin Harbor, City of Key West waters, state waters within the Florida Keys National Marine Sanctuary, and the Indian River Aquatic Preserve from Vero Beach to Fort Pierce. Inside those zones a sealed holding tank is the only compliant option.¹²

Vessels 26 feet or longer must display a durable garbage disposal placard (at least 5 by 9 inches) in a prominent location, along with an oil discharge placard. Federal law prohibits dumping any garbage overboard in lakes, rivers, bays, and ocean waters less than three miles from shore.

A Pre-Departure Check

For most recreational motorboats in Florida, the aboard-the-vessel checklist comes down to this: one wearable life jacket per person, a throwable device if the boat is 16 feet or longer, the right number of current fire extinguishers, a working sound signal, serviceable navigation lights, visual distress signals for coastal waters, and an engine cutoff switch link if the boat is under 26 feet with enough power to require one. For paperwork, keep the registration certificate aboard, display the registration numbers correctly, and carry your boating safety education card with photo ID if you were born in 1988 or later. Missing any of these during a safety inspection is where a quick check turns into a citation, and every item on the list is cheaper to fix than the fine that comes with going without it.

1
Online Sunshine. Florida Statutes 0327.50 – Vessel Safety Regulations; Equipment and Lighting Requirements
2
eCFR. 33 CFR 175.15 – Personal Flotation Devices Required
3
United States Coast Guard. Fire Extinguishers Requirements for the Recreational Boater FAQ
4
eCFR. 33 CFR Part 83 Subpart D – Sound and Light Signals
5
U.S. Coast Guard. A Boaters Guide to the Federal Requirements for Recreational Boats
6
Office of the Law Revision Counsel. 46 USC 4312 – Engine Cut-off Switches
7
Florida Fish and Wildlife Conservation Commission. Florida Boating Regulations
8
Online Sunshine. Florida Statutes 0328.48 – Certificate of Registration; Number Display
9
Online Sunshine. Florida Statutes 0327.395 – Boating Safety Education
10
Florida Fish and Wildlife Conservation Commission. FAQs About Boating Safety Education Requirements
11
US EPA. Marine Sanitation Devices (MSDs)
12
US EPA. No-Discharge Zones (NDZs) by State