Does Car Insurance Cover Towing a Boat?

Usually yes for liability, and usually no for the boat. While a boat trailer is attached to your insured car or truck, your auto policy's liability coverage generally applies if the trailer causes injury or property damage to someone else. That same policy generally does not pay to repair the boat, the motor, or the trailer when they are damaged, and once the trailer is unhitched, most auto policies stop covering it at all. The boat and everything on the trailer need coverage of their own, which is why a boat policy, not your car policy, is the one to read before the first trip to the ramp.

What your auto policy does while you tow

Liability travels with the tow vehicle. The Texas Department of Insurance explains that your auto insurance might pay for accidents you cause while pulling a trailer, but that you probably need a separate policy or endorsement to cover damage to the trailer itself. The Oklahoma Insurance Department draws the line the same way: there is no liability coverage for a trailer on its own, only liability coverage while the trailer is attached to your insured vehicle.

In practice, that means if the trailer sways into another lane and hits a car, or the boat shifts and damages someone's property, the bodily injury and property damage liability limits on your auto policy are what respond, up to those limits. It also means the hitch matters. Liability for a trailer that has been dropped in a parking lot or left at the ramp is a different question, and one to ask your insurer directly rather than assume.

What it does not cover: the boat, the motor, and the trailer

The Utah Insurance Department puts it bluntly: unless you have specific coverage for the units you are transporting, they will not be covered if you are involved in an accident, and neither will the trailer or other unit you are using to transport them. The department notes that the greatest risk of damage is usually when everything is loaded up and in tow, and that it is easy to have twenty to seventy-five thousand dollars of property value behind your vehicle.

The collision and comprehensive coverage on your car does not fill that gap, because it is written for the car. The Texas Department of Insurance describes collision as paying to repair or replace your car after an accident, and comprehensive as paying if your car is stolen or damaged by fire, flood, vandalism, or something other than a collision. A boat on a trailer is cargo, not the covered car.

• The hull and the inboard or outboard motor
• The trailer itself, whether it is hitched, parked, or in storage
• Equipment aboard, such as fishing gear and electronics
• Medical bills for people hurt on the water rather than in the car
• Liability for accidents that happen once the boat is off the trailer and in the water

Where coverage for the boat comes from

Homeowners insurance is the first place people look, and it is thin. The Texas Department of Insurance notes that most homeowners policies will cover damage to your boat only for a limited dollar amount and provide no liability coverage. For a more expensive boat, for medical payments, or to pay for damage or injuries to others, you need a separate boat policy.

That separate policy is usually a boatowners policy for smaller craft or a yacht policy for larger and more expensive ones. The North Carolina Department of Insurance describes the standard coverages as physical damage, liability, and medical payments. Physical damage typically pays to repair or replace the boat if it is damaged by fire, theft, lightning, vandalism, collision, or windstorm, and the covered items include the boat itself, the motors, and the boat's trailer. Personal effects that are not used in the normal operation of the boat are generally not covered unless you add coverage for them.

Boat policies also settle losses in different ways. The Texas Department of Insurance lists three kinds: replacement cost, which pays to repair or replace the boat; actual cash value, which subtracts depreciation; and agreed amount value, which pays up to a value set in the policy. Two provisions catch owners off guard. A layup provision suspends coverage during the months the boat is not in use, and many policies limit ocean use and restrict underage operators.

Towing-specific gaps worth asking about

• Unhitched trailer: since auto liability applies only while the trailer is attached, ask whether your boat policy's trailer coverage applies at the ramp, in the driveway, and in storage.
• Borrowed or rented trailer: the Utah Insurance Department reminds owners that mandatory liability coverage does not protect property you have borrowed or rented, so a friend's trailer under your truck is your problem if it is damaged.
• Breakdowns on the road: towing and labor coverage on your auto policy pays to tow your car if it cannot be driven, but it is written for the car. Ask how a breakdown with a boat behind you is handled, and whether the boat policy includes on-road assistance for the trailer.
• Liability limits: a heavy trailer can do a lot of damage in a crash, and your auto liability limits are what respond. If you tow often, it is a reason to carry more than the state minimum.
• Layup months: if your boat policy suspends coverage in the off-season, a winter tow to a storage yard may happen with no physical damage coverage on the boat or trailer.

Before you hook up

Call your auto insurer and confirm that liability extends to the trailer while it is attached, and ask whether the trailer needs to be listed on the policy. Then read the boat policy's declarations page for the trailer: confirm it is covered for physical damage, that the limit matches what the trailer is worth, and that the layup provision is not in effect on the day you tow. Keep both insurance cards in the tow vehicle. If you cannot find trailer coverage on either policy, that is the gap to close before the first trip, not after.

The bottom line: your car insurance covers the harm your boat trailer does to other people while it is hitched, and little else. The boat, the motor, the trailer, and anyone hurt on the water depend on a boat policy. Line up both before you tow, and check the hitch twice.