By law, boat insurance is not required in Illinois to register and title your boat.
Reasons to have boat insurance
Accidents happen.
If you cause an accident you can be held responsible for all costs associated with that accident
Boat liability insurance will help cover costs related to bodily injury and property damage suffered by others in a boating accident you cause
Some marinas require boat insurance in order to dock your boat.
Is my boat covered under my home policy?
Your home insurance policy may provide limited coverage on smaller boats on your property, but most large watercraft have their own specific insurance available to them.