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Boat Kill Switch Law: Who Must Use an Engine Cut-Off Switch

Boat Kill Switch Law: Who Must Use an Engine Cut-Off Switch

Posted by Safe Boating America on 22nd Oct 2026

Boat Kill Switch Law: Who Must Use an Engine Cut-Off Switch

Operator wearing engine cut-off switch link underway

The boating “kill switch law” is a federal requirement to use the engine cut-off switch (ECOS) link on most recreational boats under 26 feet. It has applied to operators since April 1, 2021. The link is the lanyard or wireless fob that stops the engine if you leave the helm. It is a safety rule for operators who are ejected or fall overboard. It has no connection to the car “kill switch” stories on social media.

This guide covers what the law says, which vessels it reaches, when you must be clipped in, what is exempt, and how state rules for Jet Skis and WaveRunners fit in.

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TL;DR

  • Federal law requires the operator of a covered recreational vessel under 26 feet to use the ECOS link while on plane or above displacement speed.
  • Covered means a vessel capable of at least 115 pounds of static thrust, roughly 3 horsepower, with an ECOS installed or required.
  • Enclosed-cabin helms, docking, trailering, trolling and no-wake operation are not covered by the use requirement.
  • States add their own PWC rules, so check the state where you ride.
  • The “No Kill Switches in Cars Act” is a separate bill about passenger vehicles and does not touch boats.

Table of Contents

What the law actually says

The rule sits in 46 U.S.C. § 4312. It was built in two steps. A 2018 law told manufacturers, distributors and dealers to install cut-off switches on covered boats. A later 2021 law told operators to use them. The Coast Guard’s newsletter describes the two laws as separate obligations.

Federal boat switch installation and use duties

The Coast Guard’s implementation notice states that operators of recreational vessels under 26 feet must use the ECOS and its link as of April 1, 2021. The Coast Guard also explains that the safety goal is to prevent runaway vessels. When an operator is thrown out, an unmanned boat can circle back and strike the person in the water, other boats or responders.

The term “kill switch” is common speech. The legal term is engine cut-off switch, and the part you wear is the ECOS link. Use those words when you search regulations or talk to a dealer.

Which boats and PWCs are covered

A vessel is covered when all of these apply:

Test Covered
Type Recreational vessel on U.S. navigable waters
Length Less than 26 feet overall
Power Capable of at least 115 pounds of static thrust (about 3 horsepower)
Equipment Has an ECOS installed, or was required to have one when built

The Coast Guard describes the 115-pound threshold as approximately 2 to 3 horsepower in its FAQ. In practice, nearly every outboard-powered runabout, bowrider, center console and personal watercraft clears it.

Installation versus use

The installation duty falls on the builder and seller, not on you. The statute applies it to boats built on or after the applicable December 2019 effective date. It does not generally require an owner to retrofit an older boat that was never required to have a switch.

The use duty falls on the operator. If your covered boat has a working ECOS, you wear the link when the rules require it. You must also keep the system in working order on a covered boat built under the installation rule.

Check the hull identification number

For boats near the cutoff, do not rely on the model year alone. The Coast Guard FAQ says the hull identification number (HIN) is the better check, and that for model-year 2020 boats the certification-date characters can decide whether the installation requirement applies. The FAQ shows where the HIN appears and how to read it.

The requirement applies when the vessel is operating on plane or above displacement speed. The Coast Guard guidance lists situations where use of the link is not required:

  • Docking
  • Trailering
  • Trolling
  • No-wake operation

A common mistake is to treat the law as a rule for every maneuver. It is not. The reverse mistake is also common: unclipping once the boat is moving fast. The rule applies exactly when the boat is fast and the consequences of an ejection are worst.

The link is usually a coiled lanyard clipped to your clothing, your personal flotation device (PFD) or your wrist. Wireless fob systems also exist. The Coast Guard FAQ says the link must be attached to the switch while the vessel is on plane or above displacement speed.

Practical habits that make compliance easy:

  1. Clip the link to the PFD you are already wearing, not to loose clothing that can slip off.
  2. Check the lanyard for fraying and the clip for damage before each outing.
  3. Test that the engine stops when the link is pulled, at the dock with the boat secured.
  4. Brief every person who may take the helm, including a passenger who might need to steer in an emergency.
  5. Carry a spare link if your boat uses a proprietary one.

Exemptions and gray areas

The Coast Guard FAQ states that the federal use rule does not require the link when the main helm is inside an enclosed cabin. It also does not apply when a vessel has no ECOS and was not required to have one. In that case the Coast Guard still recommends repairing and using a serviceable system if one exists.

Two more points come up often:

  • Paddle-only craft. A kayak or canoe without propulsion machinery has nothing to cut off, so this law does not reach it. Paddlers have other safety planning to do, such as kayak launches and safety planning on busy coastal waters.
  • Boats 26 feet and over. The federal rule is written for vessels under 26 feet. A larger boat with a switch is still wise to use, but check state rules.

One enforcement note: the Coast Guard’s 2021 newsletter described these requirements as part of the U.S. Code and, at that time, not enforceable by state and local marine officers. That description is historical. Do not assume it reflects what officers on your waterway do today. Ask your state boating agency.

State rules, especially for Jet Skis and WaveRunners

The federal rule is a baseline. States regulate separately, and personal watercraft are where state law matters most. Coast Guard guidance published after the law passed counted seven states with recreational-vessel ECOS laws and 44 states with PWC ECOS-use laws. Those figures come from that publication and may not reflect later changes.

A state may impose a broader use obligation than the federal definition of a covered vessel. For PWC, the Coast Guard FAQ says the lanyard or approved wireless equivalent is designed to stop propulsion if the operator is ejected or displaced. Wear it whenever you operate in the way federal and state law require.

Situation What to do
Renting a PWC in another state Ask the operator for that state’s lanyard and education rules before launching
Trailering to a new lake Check the boating agency’s site for ECOS and PWC rules for that water
Teen riders Review age and certificate rules, see Jet Ski licenses for minors
Owning a boat under 26 feet Verify the HIN, test the switch, wear the link on plane

A state-approved course is the most reliable way to learn the local version of these rules, because the federal text alone will not tell you what your state adds.

The car “kill switch” is a different law

Most search results for this phrase are about cars. The No Kill Switches in Cars Act, H.R. 1137, was introduced February 7, 2025 and referred to the House Energy and Commerce Committee. Its subject is impaired-driving technology in passenger vehicles. As of October 21, 2026, the congressional record shows it as introduced, not enacted.

Neither the car bill nor the boat law lets a government remotely shut off your vehicle. The boat ECOS is a physical device that stops your own engine when you leave the helm. It is a mechanical safety measure for the operator.

Why the rule exists

The Coast Guard’s Boater’s Guide to Federal Requirements lists wearing an installed ECOS link as a legal requirement effective April 1, 2021. The same guide warns that most propeller injuries and fatalities involve open motorboats 16 to 25 feet long and are tied to inattention, inexperience and carelessness.

The guide also frames the switch as one part of a system. It does not replace a properly fitted PFD, sober operation, knowledge of the navigation rules, equipment checks or a boating safety course. For the rest of that checklist, see our guides to boat safety equipment and general boat requirements.

Our perspective

We teach boating safety courses, and the kill switch comes up in nearly every class. Students usually arrive with one of two beliefs: that it only applies to Jet Skis, or that it only applies in a few states. Neither is right. The federal rule covers most small powerboats, and states often add PWC rules on top.

Our perspective — overview diagram

Our instructors are State Certified Instructors and USCG-Licensed Captains. What we see is that the lanyard fails through habit, not ignorance. People clip in for the first run and unclip after lunch. We tell students to attach it to the PFD before starting the engine, so putting the PFD on and clipping in become one action.

We also tell students not to treat a certificate as the end of learning. The switch protects you in one scenario. Courses cover the other ones: right-of-way, fueling, equipment and local hazards. See our overview of why boating safety education is mandatory and how boating education lowers accident rates.

— Richard

Get certified for your state

If you operate a boat or PWC and need a state-approved certificate, we offer these formats:

Pick the course for the state where you will operate. Requirements differ by state, so confirm yours with your state boating agency.

Quick compliance checklist

  1. Confirm your vessel is a recreational vessel under 26 feet with at least 115 pounds of static thrust.
  2. Find the HIN and confirm whether the installation rule applied to your boat.
  3. If the boat has an ECOS, keep it working and carry a good link.
  4. Wear the link whenever you are on plane or above displacement speed, unless your helm is in an enclosed cabin.
  5. For a PWC, read your state’s rules before riding.
  6. Review the rest of your gear, including boating electronics and your helm setup.
  7. Fueling is another high-risk moment, see fueling safety precautions.

FAQ

Is the boat kill switch law federal or state?

The core rule is federal and applies on navigable U.S. waters to covered recreational vessels under 26 feet. States can add their own requirements, particularly for personal watercraft. Check the boating agency in the state where you operate.

Do I have to wear the lanyard at no-wake speed or while docking?

No. Coast Guard guidance says docking, trailering, trolling and no-wake operation do not require ECOS-link use. The requirement applies when you are on plane or above displacement speed.

My boat is older and has no kill switch. Do I need to add one?

The federal installation requirement generally applies to builders, distributors and dealers for covered boats built after the effective date. It does not generally force an owner to retrofit an older boat. The Coast Guard still recommends repairing and using a serviceable system if your boat has one.

Is the car kill switch law the same thing?

No. H.R. 1137 is a bill about advanced impaired-driving technology in passenger vehicles. It is not a boat or PWC law and, per the congressional record, had not been enacted as of October 21, 2026.

Does the law apply to Jet Skis?

Yes, in practice. PWCs are built with cut-off switches, and the Coast Guard reported that most states have PWC lanyard-use laws. Wear the lanyard or approved wireless equivalent whenever you ride.

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