Boat insurance may cover physical damage to the boat and trailer. This would include the hull, motor, safety equipment, etc. Liability coverage may help pay for expenses if you cause an accident that damages someone else’s property.
If you experience a boating accident or incur a loss, you would file a claim with the insurance company. Often, you are required to cover the deductible before the insurer will pay for the remaining losses and/or injury up to the limit (if the incident is covered).