Registration goes through the DMV
First surprise for a lot of people: registration here runs through the Division of Motor Vehicles. The DMV. Not a marine office, not fish and game, the way it works in some states. If your boat's motorized and you run it on public waters, you register it — that's the law, not a nice-to-have — and the decal goes on the way the state tells you. New boat? Do the paperwork before it ever touches the water. They do enforce this out on the lake.
What you need depends on the kind of boat, what pushes it and what you use it for, and the state sets (and every so often changes) the fees and how often you renew. That's why there's no figure here — ask the New Hampshire DMV what it is right now. Same if you bought the boat out of state, if it's a documented vessel, or if there's any question about the title. Those are the cases where you want the state's own wording, not somebody's summary of it.
The boating education certificate
Then there's the boating education certificate. Run a motorboat over a certain horsepower on New Hampshire's public waters and you need one. It comes from an approved safe-boating course, in a classroom or online, and once you've got it, it doesn't lapse the way a license does. It isn't tied to any boat, either. It proves you took the course, so it follows the person, not the hull — and everybody who takes the helm needs their own.
Where do people slip up? The exact horsepower cutoff. The age rules. Temporary certificates, and who's exempt — visitors, rentals, certain operators. Those are also the bits most likely to have changed since anybody wrote about them, this page included. Check the current cutoff and exemptions with the state before you decide you're covered, or your guest is. And if a friend's going to drive this summer, check them too, not only yourself.
Who enforces it on the water
On Winnipesaukee, the people who enforce all of it are the New Hampshire State Police Marine Patrol. Registration and equipment checks, operating offenses, impaired operation, accident investigations, assistance calls — that's them. Getting stopped is routine and usually quick. They'll look at your registration. They'll want to see the required safety gear actually aboard and easy to get at, not jammed under a summer's worth of junk in a locker.
Marine Patrol publishes the current rules too, and they're who you ask about your own situation, whether it's a local restriction, a towing rule, or whether the gear you carry is enough for your boat. Penalties come from statute; don't try to guess them. And it's a big beat. Eight towns on the shore, at least two hundred and sixty-four islands, and the traffic on the open broads is nothing like the traffic squeezing through the narrow passages between islands.
Safety equipment, in general terms
Life jackets first: a wearable one for every person aboard, the right size for that person, in usable shape. Over a certain size, you also need a throwable. After that it's the general list — a fire extinguisher that suits the boat, something that makes a loud noise, navigation lights that work if you're out after dark or in fog, and visual distress signals where they're required. Gasoline inboards and sterndrives add ventilation and backfire-flame-control rules on top.
What that list won't tell you is exactly what your boat needs. Hull length changes it. So does what drives the boat, and whether you carry passengers for hire. Extinguisher ratings and how many, which life-jacket types, what applies to kids — it's all in the detail. Look up the current rules for your boat's length and type with the state, then go through the gear itself when the season starts. Flares past their date, an extinguisher that's discharged, a life jacket with a torn strap: as far as the rules go, you don't have them.
Speed, headway and local rules
Speed rules make sense even when the numbers don't stick. Close to shore, swimmers, docks, rafts, boats on moorings or other boats, you drop to headway speed — about as slow as she'll go and still steer and make way, with no wake worth mentioning. How close counts as close, and the limits for open water and after dark, come from state law. Get those from Marine Patrol, not from a website.
Winnipesaukee has extra restrictions of its own, too, which matters if you also boat elsewhere in the state. Look at the lake and you can see why — this isn't red tape for its own sake. Twenty-one miles long and anywhere from one to nine wide, dotted with islands and tight channels, so a wide-open run turns into a crowded squeeze within minutes. A wake in the wrong place does real damage to moored boats and to the shore, and that's most of the reason the rules are there.
