A boat is a big investment, and the water adds risks your home and car policies were never built for. Here is what boat insurance typically covers in California, and where other policies fall short.

What does boat insurance cover?

A boat or watercraft policy is built around the vessel. Common coverages include:

Liability for injury and property damage you cause to others, including passengers and swimmers
Physical damage coverage for the boat and its motor
Theft and vandalism protection
Agreed value coverage, which pays an agreed amount in a total loss instead of a depreciated value
Uninsured and underinsured watercraft bodily injury coverage
Unattached equipment coverage for gear designed mainly for boat use
Protection for the trailer and while towing, depending on the policy

April’s boat page lists agreed value, uninsured and underinsured watercraft bodily injury, and unattached equipment coverage among its options. Terms, limits, and exclusions vary by policy.

Why isn’t homeowners insurance enough for a boat?

A standard homeowners policy may cover a small boat and its motor, but the physical damage limit is often just $1,000 to $1,500. That coverage typically applies while the boat is stored at home, not while it is on the water.

Homeowners liability for boats is usually limited to small vessels. Common cut offs include:

Outboard motors over 25 horsepower
Inboard or sterndrive motors over 50 horsepower
Sailboats over 26 feet

Exact limits vary by policy. Personal watercraft such as jet skis are commonly excluded. A boat that exceeds these limits generally needs its own liability coverage.

What about my auto insurance when I tow?

Your auto liability may respond if there is an accident while towing, but it typically does not pay for damage to the boat or the trailer.

Is boat insurance required in California?

California does not require boat insurance by state law for recreational boats. In practice, though, many owners need it anyway.

Lenders require coverage on financed boats. Marinas commonly require proof of liability coverage, often asking to be named as an additional insured. Limits vary by marina, so read your slip agreement.

Because insurance is optional, some boaters on the water carry none. That is why uninsured boater coverage matters.

What should Bay Area boaters check?

Whether your boat lives in a Bay Area marina or is trailered to the Delta or a Sierra lake, review these:

Your boat’s length, engine size, and value against any coverage your homeowners policy offers
Your policy’s navigation area, if you cruise past the Bay or offshore
Whether your marina’s liability and additional insured requirements are met
Whether the agreed value still matches your boat’s current value
Whether your trailer, equipment, and any personal watercraft are included

Frequently asked questions

Does homeowners insurance cover a jet ski?
Usually not. Personal watercraft are commonly excluded from homeowners liability and often need their own policy.

Does boat insurance cover my trailer?
Often it can. Ask whether trailer coverage is included or added separately.

Do I need boat insurance if my boat is small?
Even a small boat can injure someone or damage property, and homeowners liability for boats is limited by size and horsepower. A quick policy review will show where you stand.

How much does boat insurance cost?
There is no single price. Cost depends on the boat’s value, size, engine, and age, where you keep it, how you use it, and your boating experience. A quote is the quickest way to get a number.

Can an umbrella policy help with boat liability?
An umbrella policy can add liability protection above your boat policy, subject to its requirements. Ask your agent how the two fit together.

At April Insurance Agency, we help Bay Area boat owners check what their current policies cover and where the gaps are. Reach out to April Insurance Agency to review your options.
Call 415-242-8100 to get started.