As of this writing, Maine does not have a state law that generally requires you to insure a recreational boat. Your harbormaster might, though. So might your marina, your lender, and the town where you keep your mooring.
If you are shopping for Maine boat insurance, here is the useful version: coverage is generally optional under state law but often required in practice, and the policy details that matter most in Maine are the ones a quick online quote tends to skip. Where you boat. How the boat spends the winter. Who is allowed to drive it.
The short answer: As of this writing, Maine boat insurance is generally not required by state law to register or operate a recreational boat. Lenders commonly require it on financed boats, many marinas ask for proof of liability coverage, and some Maine towns have required liability insurance as a condition of a mooring permit. A typical boat policy may cover physical damage to the boat, motor, and trailer; liability for injuries or damage you cause; medical payments; and wreck removal, subject to the policy’s terms, limits, conditions, and exclusions. Rules and policies change, so confirm current details with your agent.
Is Boat Insurance Required in Maine?
Based on our review of Maine’s published boating rules, the state does not generally require recreational boat owners to carry boat insurance. The Maine Department of Inland Fisheries and Wildlife (IFW) requires most motorboats, including personal watercraft, to be registered, but proof of insurance is not currently part of that registration process.
Where insurance requirements usually come from instead:
- Your lender. If the boat is financed, the loan agreement may require physical damage coverage until the loan is paid off, with the lender listed as a loss payee (the party that gets paid first if the boat is totaled).
- Your marina or yacht club. Slip and storage contracts often ask for liability coverage at a set minimum and may ask to be named as an additional insured (a party added to your policy’s liability protection).
- Your town’s harbor ordinance. This is the one Maine boat owners tend to overlook.
Maine Towns That Require Insurance for a Mooring
Coastal Maine towns write their own harbor rules, and several have tied mooring permits to insurance. A few examples, based on each town’s published rules at the time of writing:
- Wells: The town’s harbor ordinance calls for public mooring holders to carry at least $100,000 in liability insurance on the vessel, with proof included in the mooring application. The ordinance also allows the permit to be revoked if coverage is not maintained. (Town of Wells, Chapter 124)
- Portland: The Harbor Commission’s rules call for mooring applicants to show bonding or insurance of at least $100,000 to cover the cost of raising the vessel if it sinks in Portland Harbor. (Portland Harbor Commission rules)
- Scarborough: The town’s harbor ordinance has called for proof of boat registration and insurance, in the same name as the mooring applicant, before a mooring permit is issued. (Scarborough Coastal Waters and Harbor Ordinance)
That kind of same-name detail can catch people. If the boat is registered to one spouse, insured under the other, and the mooring permit is in a third name (a trust or LLC, for example), the paperwork may not line up. Ordinances are updated regularly, so these examples may not reflect current rules. Check with your harbormaster before you renew, and call your agent to confirm your policy matches what the town asks for today.
What Maine Boat Insurance Typically Covers
Most Maine boat insurance policies are built from the same core coverages. What changes from carrier to carrier is how each one is written and what limits apply.
| Coverage | What it may pay for | The Maine question to ask |
|---|---|---|
| Physical damage | Repair or replacement of the hull, motor, and trailer after a covered loss such as collision, fire, theft, or storm | Is the boat insured for agreed value or actual cash value? |
| Liability | Injuries to others or damage to their property that you are legally responsible for | Does my limit meet my marina’s and my town’s mooring minimum? |
| Medical payments | Medical bills for you and your passengers after a boating accident, often regardless of fault | What is the per-person limit? |
| Uninsured boater | Your injuries when another boater causes the accident and has little or no insurance | Since Maine does not require coverage, how much of this do I want? |
| Wreck removal and fuel spill | Raising or removing a sunken boat and cleaning up spilled fuel | Is this a separate limit, or does it come out of my hull limit? |
| Towing and assistance | An on-water tow, jump start, or fuel delivery if you break down | What is the limit per incident? |
Two terms worth knowing: agreed value means you and the carrier settle on the boat’s value when the policy is written, so a total loss generally pays that amount. Actual cash value subtracts depreciation at the time of the loss, which usually means a smaller check for an older boat. For a broader rundown of watercraft coverage, see our boat and watercraft insurance page.
Coastal or Inland: Where You Boat in Maine Changes the Policy
Most Maine boat insurance policies include navigation limits, meaning the waters where coverage applies. Some policies are written for inland lakes and rivers only. Others include coastal waters out to a set distance from shore.
Here is how that plays out. Picture a 20-foot bowrider that spends most of the summer on Long Lake in Naples. In August, the family trailers it to Kennebunkport to run up the coast for the day. If the policy was written with an inland-only navigation territory, that coastal trip could fall outside coverage, depending on the policy language. (This is an illustrative example, not an actual claim.) Nobody thinks about it until something goes wrong on the one day it mattered.
Coastal boats can come with their own conditions. Depending on the carrier, a policy may carry a separate named storm deductible (often calculated as a percentage of the boat’s insured value rather than a flat dollar amount) or ask for a plan for hauling or securing the boat when a hurricane is forecast. Where the boat is kept can also affect pricing, so a boat on a Casco Bay mooring and a boat on a trailer at a Moosehead camp may be rated differently.
Wreck Removal Coverage and Maine Moorings
If a boat sinks at a mooring, the owner may be held responsible for raising and removing it. Portland’s $100,000 rule is aimed at exactly that situation.
The Maine boat insurance detail that matters here is where the money comes from. Some policies include wreck removal inside the hull limit, so a total loss could use up much of the limit before the boat is even off the bottom. Others provide wreck removal as a separate limit on top of the hull coverage. If you keep your boat on a mooring in tidal water, ask which way your policy is written.
Haul-Out and Winter Storage: Fall Questions for Maine Boat Owners
Most Maine boats spend more of the year on land than in the water, and a lot of Maine boat insurance questions show up between October and April.
- Lay-up period. A lay-up period is the stretch of months your policy assumes the boat is out of the water and not in use. Some carriers adjust coverage or pricing around those dates. If you launch early during a warm April week or haul late after a mild fall, check that the dates on your policy match what you actually do.
- Freeze damage. Many boat policies exclude or limit damage from freezing, particularly if the engine and water systems were not properly winterized. Ask what your carrier expects, and keep the receipt if a yard does the work.
- Where the boat is stored. A shrink-wrapped boat in the backyard, a boat on stands at a yard, and a boat in an indoor storage building face different risks: snow load on the cover, theft of an outboard or trailer, fire in a shared building. Confirm the policy covers the boat while stored, and tell your carrier if the storage location has changed. Storage agreements also often limit what the facility is responsible for, so read yours to see which losses would fall back on your own policy.
Personal Watercraft Insurance and Maine’s Boater Education Law
Maine updated its operator rules effective January 1, 2024. According to Maine IFW, anyone born on or after January 1, 1999 generally needs to complete a boater safety and education course to operate a personal watercraft or a motorboat over 25 horsepower, and personal watercraft operators must be at least 16. Exceptions apply, so check IFW for the current rules. (Maine IFW, Boating Safety and Education Course)
That matters for Maine boat insurance because personal watercraft get lent out. A lot. A jet ski at a lake camp may be driven by half the family and a few summer guests by Labor Day. Say, as a hypothetical, a 20-year-old nephew without a course certificate takes it out and hits a dock. The carrier may ask whether he was a permitted operator and whether he was operating legally. Some policies limit or exclude coverage for operators who do not meet state requirements, so ask how yours handles guests and unlisted drivers. On the plus side, some carriers offer a discount for completing a boating safety course.
Does Homeowners Insurance Cover a Boat in Maine?
Usually only in a limited way. A homeowners policy may cover a canoe, kayak, or small boat for a modest amount of physical damage, but liability for motorboats is often restricted by horsepower or length, and seasonal camp policies can be narrower still. Read the watercraft section of your home or camp policy first. If the boat is not included, a separate Maine boat insurance policy is a common way to fill that gap. For the property side, see our page on coastal and waterfront home insurance.
What to Do After a Boating Accident in Maine
Maine’s watercraft accident reporting statute, as currently published, sets specific deadlines. A written report is due within 24 hours if an accident results in a death, a disappearance, loss of consciousness, medical treatment, or a disability lasting more than 24 hours. Accidents involving only property damage estimated at $2,000 or more must be reported within 72 hours. (12 M.R.S. §13069-C) If you are ever unsure whether a report is required, contact the Maine Warden Service or IFW directly.
Separately, notify your insurance carrier as soon as you can. Take photos, get the names and boat registration numbers of everyone involved, and write down what happened while it is fresh.
Questions to Ask Before You Renew Your Maine Boat Insurance
- Does my liability limit meet my marina’s requirement and my town’s mooring requirement?
- Is the policy in the same name as my boat registration and mooring permit?
- Are my navigation limits inland, coastal, or both, and do they match where I actually take the boat?
- Is the boat insured for agreed value or actual cash value?
- Is wreck removal a separate limit?
- Do I have a named storm deductible, and how is it calculated?
- Do my lay-up dates match when I launch and haul out?
- What does the policy require for winterization?
- Who can operate my boat or personal watercraft, and does anyone need a boater education certificate?
Maine Boat Insurance FAQ
Do I need boat insurance in Maine?
As of this writing, Maine state law does not generally require boat insurance for recreational boats. You may still need it if your boat is financed, if your marina requires it, or if your town requires liability coverage for a mooring permit. Wells, Portland, and Scarborough are examples of towns whose published rules have included insurance requirements. Call your agent or harbormaster for current requirements.
How much liability coverage do I need for a mooring in Maine?
It depends on the town and the marina. At the time of writing, Wells’ ordinance called for at least $100,000 in liability coverage for public mooring holders, and Portland’s rules called for at least $100,000 in bonding or insurance to cover raising a sunken vessel. Marinas may set higher minimums in their contracts, and all of these can change. Many boat owners choose limits above the minimum, and some umbrella policies can extend over boat liability, depending on how the umbrella is written. An umbrella policy is extra liability coverage that sits on top of your other policies.
Does boat insurance cover my boat in winter storage in Maine?
Many boat policies continue to cover a stored boat for losses such as fire or theft. Freeze damage is often excluded or limited if the boat was not properly winterized, and coverage can depend on the lay-up dates and storage location listed on the policy.
I live in New Hampshire but keep my boat in Maine. What changes?
For registration, IFW’s published rules generally allow a boat with a valid out-of-state registration to operate in Maine until it has been in the state more than 60 consecutive days after its state of principal use changes. A nonresident whose motorboat is located in Maine more than 75 days in a calendar year is generally required to pay excise tax to the Maine town where the boat is principally moored, docked, or located before registering. Confirm the details with IFW or the town office. For insurance, tell your carrier where the boat is actually kept, since that can affect pricing and navigation limits. Keslar works with boat owners in New Hampshire, Maine, and Massachusetts, so a boat that crosses state lines is familiar territory.
Is personal watercraft insurance different from boat insurance?
Personal watercraft insurance generally includes the same core coverages as boat insurance: physical damage, liability, medical payments, and uninsured boater protection. It may be written as its own policy or added to a boat policy. Operator rules tend to matter more, since Maine’s current rules set a minimum personal watercraft operator age of 16 and generally require a boater safety course for operators born on or after January 1, 1999.
Get Your Maine Boat Insurance Reviewed Before Haul-Out
Hauling out this month? Before the shrink wrap goes on is a good time to check your lay-up dates, your navigation limits, and whether your liability limit meets your harbor’s current mooring rules. Laws, town ordinances, and carrier guidelines change, so the best way to get up-to-date information for your boat is to talk with someone who can look at your actual policy. Keslar works with multiple insurance carriers, so our team can compare Maine boat insurance options side by side and explain the differences in plain language. Call (603) 273-0953 or request a boat insurance quote.
Please note: This article is for general educational purposes only and is not legal advice or a guarantee of coverage. Information about Maine laws, town ordinances, and insurance practices reflects our understanding at the time of writing (October 2026) and may change. Coverage depends on the specific policy, carrier, and circumstances, and is subject to each policy’s terms, limits, conditions, and exclusions. Examples in this article are illustrative and are not actual client claims. For current requirements, contact Maine IFW, your town’s harbormaster, or call Keslar Insurance Agency at (603) 273-0953.
