New Hampshire boating laws require most motorboat operators to carry a safety education certificate, register their vessel every year, keep specific safety equipment on board, and follow rules on speed, towing, alcohol, and invasive species. The Marine Patrol enforces those rules on lakes, rivers, and coastal waters, and violations range from ticketable fines to criminal charges that can cost you your driver’s license.
Who Needs a Boating Safety Certificate
If you’re 16 or older and operating a motorboat with more than 25 horsepower on public waters, you need a boating safety education certificate, and it has to be with you while you’re operating.1New Hampshire General Court. New Hampshire Code 270-D:10 – Certificate Required The course covers navigation, emergencies, and state-specific rules, and it must meet the standards of the National Association of State Boating Law Administrators. Classroom versions run at least 8 hours. Adults 18 and up can take the exam online unproctored by attesting to their identity; anyone under 18 has to sit a proctored exam.2New Hampshire General Court. New Hampshire Code 270-D:13 – Issuance of Safe Boater Education Certificate
Temporary Certificate for Visitors and Renters
Visiting the state or renting for the weekend? You can get a 14-day temporary certificate. You’ll need to be at least 16, show a photo ID, and score 80% or better on a short exam given by the Department of Safety or an authorized agent, such as a rental operator. It’s good only in New Hampshire, and only once per calendar year.3NH State Police. 14 Day Temporary Safe Boating Certificate
Registering Your Boat
Every vessel operated on New Hampshire public waters, whether tidal, coastal, or inland, has to be registered.4New Hampshire General Court. New Hampshire Code 270-E:3 – Registration Required The main exemptions are sailboats under 12 feet, rowboats, and canoes powered entirely by human effort. Anything with an inboard or outboard motor is registered, no matter the size.5New Hampshire General Court. New Hampshire Code 270-E:4 – Exemptions From Registration and Boat Fee Decal
Registration goes through the Division of Motor Vehicles. You can register anytime, but every registration expires December 31, so it’s an annual renewal.6NH Division of Motor Vehicles. New Boat Registration Each boat gets a bow number that has to appear on both sides of the hull, plus a validation decal. Base fees are tied to length:7New Hampshire General Court. New Hampshire Code 270-E:5 – Registration Fees
- Up to 16 feet: $24
- 16.1 to 21 feet: $34
- 21.1 to 30 feet: $52
- 30.1 to 45 feet: $72
- 45.1 feet and over: $92
Additional surcharges for boating safety and environmental programs can apply on top of the base fee. Bring proof of ownership, such as a bill of sale or prior registration, and a completed application.
Boats meeting certain criteria also need a certificate of title. The title is the legal record of ownership, needed for any sale or transfer, and it stays valid until ownership changes rather than expiring annually. A new boat needs a Manufacturer’s Statement of Origin; a used boat needs the previous owner’s title.
Age Rules for Operators
No one under 16 can operate a motorboat with more than 25 horsepower unless an adult at least 18 is aboard, and that adult must hold a valid safety certificate and is legally on the hook for any injury or property damage.8New Hampshire General Court. New Hampshire Code 270:30 – Minimum Age for Operation The state sets no minimum age for boats at 25 horsepower or less. Most personal watercraft like jet skis are well over the 25-horsepower line, so a rider under 16 needs a qualified adult on board at minimum.
Required Safety Equipment
Life Jackets
Every vessel must carry one U.S. Coast Guard-approved wearable life jacket for every person on board. Children under 13 have to wear a properly fitted one at all times while the vessel is underway. Boats 16 feet or longer, other than canoes and kayaks, also need a throwable device such as a ring buoy or cushion. Paddleboarders count too: a Type I, II, or III life jacket has to be on the board, and anyone under 13 on a paddleboard has to wear one.
Fire Extinguishers
Motorized vessels with enclosed fuel compartments, engine spaces, or living quarters need Coast Guard-approved fire extinguishers, and the count depends on length and model year. Boats built in 2018 or later must carry 5-B or 20-B rated extinguishers with a date stamp. Older boats can still carry B-I or B-II rated units as long as they’re in serviceable condition.9United States Coast Guard Boating Safety. Fire Extinguishers Requirements for the Recreational Boater FAQ
- Under 26 feet: at least one 5-B (or B-I) extinguisher
- 26 to under 40 feet: at least two 5-B (or B-I), or one 20-B (or B-II)
- 40 to 65 feet: three 5-B (or B-I), or one 20-B plus one 5-B
A boat with a fixed suppression system in the engine space can carry one fewer portable unit. Date-stamped extinguishers expire after 12 years, so check them.
Lights and Sound Signals
All motorized vessels need a way to produce a sound signal. Boats under 16 feet can use a hand or mouth whistle; boats 26 feet and longer need a whistle or horn audible for at least a mile. Any vessel operating between sunset and sunrise needs navigation lights: red and green sidelights and a white stern light at minimum.
Speed, Wake, and Anchoring
Every vessel has to slow to headway speed within 150 feet of rafts, floats, swimmers, permitted swimming areas, shore, docks, mooring fields, or other vessels. Headway speed is the slowest speed that still lets you steer, roughly 6 mph or less.10New Hampshire General Court. New Hampshire Code 270-D:2 – General Rules for Vessels Operating on Water
Some lakes set their own limits. Lake Winnipesaukee is capped at 45 mph daytime and 30 mph at night (from a half-hour after sunset to a half-hour before sunrise). Squam Lakes and Spofford Lake run 40 mph daytime and 20 mph at night. Marine Patrol posts a full list of restricted waters on its website.11NH State Police. Restricted Bodies of Water
Three or more boats tied together count as a raft under state administrative rules, and spacing requirements apply. A raft has to stay at least 150 feet from shore, 50 feet from another raft, and 50 feet from any occupied anchored boat. A single anchored boat has to stay 150 feet from shore, 50 feet from any raft, and 25 feet from another anchored boat.12Legal Information Institute. NH Admin Code Saf-C 407.01 – Rafting Rules
Towing Skiers, Tubers, and Wake Surfers
If you’re towing a skier, tuber, wakeboarder, or wake surfer, you need a dedicated observer on board in addition to the operator. The observer has to be at least 13 and physically able to watch and assist.13New Hampshire General Court. New Hampshire Code 270-D:3 – Motorboats Towing Water Skiers and Aquaplanes Towing three or more people at once takes two observers plus the operator. No more than six people can be towed on inflatable tubes at a time, and no more than two inflatables can trail one boat. All towing and wake surfing stops between sunset and sunrise.
Anyone being towed on skis or similar equipment has to wear a Coast Guard-approved Type I, II, or III life jacket. Wake surfers must also wear an approved jacket, and the tow boat has to use a propulsion system the manufacturer designed for wake surfing. Standard outboards and inboard/outboards aren’t allowed for wake surfing unless the manufacturer built them specifically for it.
Boating Under the Influence
Operating a boat while impaired is treated with the same weight as driving drunk. Under RSA 265-A:2, it’s illegal to operate a boat with a blood alcohol concentration of 0.08 or higher, or 0.02 for anyone under 21.14New Hampshire General Court. New Hampshire Code 265-A:2 – Driving or Operating Under Influence of Drugs or Liquor The statute also covers impairment from controlled substances, prescriptions, over-the-counter medications, and combinations.
Operating on state waters counts as implied consent to breath, blood, or urine testing if an officer has reasonable grounds to suspect impairment.15New Hampshire General Court. New Hampshire Code 265-A:4 – Implied Consent of Driver, OHRV Operator, or Boat Operator Refusing a test brings its own administrative penalties, including suspension of boating privileges.
A first BWI offense is a Class B misdemeanor with a minimum $500 fine. Your motor vehicle driver’s license, not just your boating privileges, gets revoked for at least nine months, and the court can extend that up to two years. The court may cut the suspension by up to six months if you complete a screening within 14 days, a substance use evaluation within 30 days, and an approved impaired driver education program.16New Hampshire General Court. New Hampshire Code 265-A:18 – Penalties for Intoxication or Under Influence of Drugs Offenses
Aggravated BWI kicks in for causing an accident with serious injury or death, having a BAC more than double the limit, carrying a passenger under 16, or trying to evade law enforcement. Penalties climb sharply, and cases involving death or serious injury can be charged as felonies.
Invasive Species Decal for Out-of-State Boats
Any boat registered in another state has to buy and display a New Hampshire aquatic invasive species decal before launching on state waters. Established under RSA 487:43, the decals cost $20 each and are available through the Department of Environmental Services.17NH Department of Environmental Services. Aquatic Invasive Species Decals Required for Out-of-State Motorboats Place it on the port (left) side of the vessel within three inches of the registration decal.
Decal or no decal, clean visible mud, plants, and algae off the hull, trailer, and gear; drain the boat and equipment away from the water; and let everything dry before launching in a different water body.18NH Department of Environmental Services. Stop the Spread of Aquatic Invasives from the Comfort of Your Boat
Reporting an Accident
If you’re involved in a boating accident with injury, death, or property damage over $2,000, you have to file a written report with the Department of Safety within 15 days.19New Hampshire General Court. New Hampshire Code 270:1-a – Drownings and Boating Accident Reports Marine Patrol advises calling in any accident right away, even before the written report is due.20New Hampshire State Police. Marine Patrol FAQ You also have a legal duty to stop and help anyone injured or in danger. Leaving the scene without helping or exchanging information is a criminal offense that can bring loss of boating privileges and jail time.
How the Rules Are Enforced
Marine Patrol is the primary enforcement agency on the water. Officers can stop vessels for safety inspections and check registration, safety equipment, and operator credentials. Routine violations like missing gear or expired registration usually mean fines. Reckless operation, including excessive speed or endangering others, can bring misdemeanor charges. Repeat offenders and boaters operating on suspended privileges can have vessels impounded, and reciprocity agreements with neighboring states mean a violation on Lake Winnipesaukee can follow you elsewhere. BWI convictions remain the most consequential penalties most boaters will run into, with escalating fines, longer license revocations, and mandatory treatment for repeat offenses.16New Hampshire General Court. New Hampshire Code 265-A:18 – Penalties for Intoxication or Under Influence of Drugs Offenses