What must be on your boat for a Coast Guard inspection comes down to a fairly predictable list: current registration with proper hull numbering, a wearable life jacket for every person aboard, a throwable flotation device on boats 16 feet or longer, a fire extinguisher on most powerboats, a sound-producing device, working navigation lights for after-dark or low-visibility operation, visual distress signals if you’re on coastal waters or the Great Lakes, an engine cut-off link on smaller powerboats, ventilation and a backfire flame arrestor for gasoline engines, and pollution placards on boats 26 feet or longer. The specifics scale with your boat’s length, engine type, and where you operate. Everything below has to be accessible for immediate inspection, because Coast Guard and state marine patrol officers can board without a warrant or probable cause.
Paperwork You Have to Show
Your current registration certificate has to be on board whenever you operate. Most recreational boats carry state registration. Vessels of at least five net tons engaged in coastwise trade, commercial fishing, or certain other federally regulated activities need a Certificate of Documentation from the Coast Guard instead, and recreational owners of qualifying vessels can opt into federal documentation voluntarily.1eCFR. 46 CFR Part 67 – Documentation of Vessels
Your registration number goes on each side of the forward half of the hull in plain block characters at least three inches tall, in a color that contrasts with the hull, with spaces or hyphens separating the letter and number groupings.2eCFR. 33 CFR 173.27 – Numbers: Display; Size; Color Federally documented vessels display their official number on a visible interior structural part. Faded or missing characters are what an officer notices first.
Many states also require the operator to carry a boating safety education card. Rules vary, with some states applying the requirement to all operators and others only to boaters born after a specified date. Keep the card with your registration.
If your boat is 12 meters (about 39.4 feet) or longer, you must also carry a copy of the Inland Navigation Rules for ready reference. A printed handbook or an approved electronic version works.3United States Coast Guard. Navigation Rules and Regulations Handbook
Life Jackets and Throwable Devices
You need one Coast Guard-approved wearable PFD for every person on board, each sized for the intended wearer. They have to be in good condition and readily accessible, meaning not sealed in original packaging, not locked away, and not buried under gear.4United States Coast Guard. Life Jacket Wear Faded, torn, or waterlogged jackets don’t count as serviceable. Check them at least once a year.
Boats 16 feet or longer must also carry a throwable Type IV device, like a ring buoy or throwable cushion, in addition to the wearables.5eCFR. 33 CFR Part 175 Subpart B – Personal Flotation Devices That throwable needs to be immediately available on deck or in an open holder, not stowed below.
Children under 13 must wear a PFD at all times while the boat is underway, unless they’re below decks or inside an enclosed cabin. That’s the federal baseline under 33 CFR 175.15(c). Many states set a different age cutoff or stricter rules, so check yours.6United States Coast Guard. Child Wear of Personal Flotation Devices – Federal Versus State Requirements
Fire Extinguishers
Most motorized recreational boats need at least one Coast Guard-approved portable extinguisher. The requirement applies if your boat has permanently installed fuel tanks, enclosed compartments that can trap fumes, or a closed living space.7United States Coast Guard. Fire Extinguisher Requirements for the Recreational Boater FAQ Open boats without those features are exempt, but most powerboats qualify.
The number scales with length:
- Under 26 feet: one 5-B rated extinguisher, or none if a fixed system covers the engine space.
- 26 to under 40 feet: two 5-B extinguishers, or one 20-B (one 5-B with a fixed system).
- 40 to 65 feet: three 5-B extinguishers, or one 20-B plus one 5-B (two 5-B with a fixed system).
A single 20-B can substitute for two 5-B units, but a 10-B cannot.
Since April 2022, disposable extinguishers must be replaced within 12 years of their manufacture date, which is stamped on the bottle. Boats with a model year of 2018 or newer may only carry extinguishers with the newer numeric ratings (5-B, 10-B, or 20-B). Boats built between 1953 and 2017 can still use extinguishers labeled with the legacy B-I or B-II designations if they’re still serviceable and haven’t passed the 12-year date. A gauge reading in the red, a missing lock pin, a clogged nozzle, or visible corrosion will fail inspection regardless of age.7United States Coast Guard. Fire Extinguisher Requirements for the Recreational Boater FAQ
Sound-Producing Device
Every recreational vessel needs a way to produce a sound signal audible to other boats. What qualifies depends on length:
- Under 12 meters (39.4 feet): any device capable of producing an efficient sound signal, such as an air horn or a whistle.
- 12 meters or longer: a whistle that meets the navigation rules specifications.
- 20 meters (65.6 feet) or longer: both a whistle and a bell.8eCFR. 33 CFR 83.33 – Equipment for Sound Signals
Navigation Lights
Between sunset and sunrise, and during fog or other restricted visibility, you must display the correct navigation lights. A power-driven vessel underway shows a forward masthead light, sidelights (red port, green starboard), and a stern light. Boats under 50 meters don’t need a second masthead light.9eCFR. 33 CFR 83.23 – Power-Driven Vessels Underway (Rule 23)
Vessels under 12 meters can replace the separate masthead and stern lights with a single all-around white light, though they still need sidelights. Sailboats, anchored vessels, and boats being towed have different configurations. Test everything before dark, because a burned-out bulb is easy to fix on shore and dangerous to ignore on the water.
Visual Distress Signals
These are required only on coastal waters, the Great Lakes, and the high seas. Boaters on inland lakes and rivers aren’t covered by the federal rule, though state law may add requirements.10eCFR. 33 CFR 175.101 – Applicability
On covered waters, boats 16 feet or longer must carry signals suitable for both day and night. Boats under 16 feet need only night signals, and only when operating between sunset and sunrise.11eCFR. 33 CFR 175.110 – Visual Distress Signals Required You can meet the requirement with pyrotechnic flares (handheld or aerial), non-pyrotechnic options like an orange distress flag paired with an electric SOS light, or a mix.
Pyrotechnic flares typically expire three to four years after manufacture, and expired flares don’t satisfy the rule. Coast Guard-approved LED electronic distress lights are increasingly common and don’t expire. Check dates before each season.
Engine Cut-Off Switch
Since April 2021, federal law requires the operator of any motorized recreational vessel under 26 feet with three or more horsepower to use an engine cut-off switch link while the boat is on plane or above displacement speed. The link, usually a coiled lanyard clipped to the operator’s body, clothing, or life jacket, shuts the engine down if the operator is thrown from the helm. Wireless electronic versions satisfy the rule.12United States Coast Guard. Engine Cut-Off Switches Enforcement takes this one seriously.
Ventilation and Backfire Flame Arrestor
Boats with enclosed engine or fuel tank compartments that can trap gasoline vapors need a ventilation system. Vessels built after July 31, 1980, need a powered blower. Older boats must have at least two ventilator ducts with cowls: an exhaust duct reaching the lower bilge and an intake duct extending below the carburetor air intake level. Open boats where fumes can’t collect are exempt.13Government Publishing Office. 46 CFR Part 25 – Coast Guard Equipment Requirements
Every gasoline engine installed in a motorboat, except an outboard, must have a backfire flame arrestor securely attached to the air intake. A loose or clogged arrestor is a common reason boats fail safety checks, so inspectors check that it’s clean and tightly connected.
Pollution Placards
Boats 26 feet or longer must display two durable placards. The oil discharge placard goes in the machinery space or at the bilge pump control station and states that discharging oil or oily waste into navigable waters is illegal. The garbage disposal placard, at least 5 by 9 inches, notifies crew and passengers of restrictions on throwing garbage overboard. Both must be durable and permanently mounted where they can be read. Inspectors look for them early on larger boats, and they’re cheap to install.
What Happens if You Fail an Inspection
The Coast Guard doesn’t need probable cause or reasonable suspicion to stop and board you. Under 14 U.S.C. ยง 522, officers can board any vessel on waters under U.S. jurisdiction, examine your documents, inspect your safety equipment, and search the vessel.14Office of the Law Revision Counsel. 14 U.S. Code 522 – Law Enforcement State marine patrol and local officers generally have similar authority on state waters, though the specifics vary.
The penalty for most recreational boating equipment violations is a civil fine of up to $1,000 per violation, and the vessel itself can be held liable.15Office of the Law Revision Counsel. 46 USC 4311 – Penalties and Injunctions Missing safety gear gets written up, not warned. You may also be ordered back to port, which ends your day.
Get a Free Check Before You Get Stopped
The U.S. Coast Guard Auxiliary offers free voluntary vessel safety checks covering all the federal and state requirements above. Pass and you get a decal showing full compliance for the year, which signals to law enforcement that your boat was recently checked. Fail and you get a written report listing what needs correcting, with no citation.16United States Coast Guard Auxiliary. Vessel Safety Checks It’s the easiest way to find gaps before a real inspection does.