A serial number in boat warranty is a unique identification code assigned to each product unit by the manufacturer. The serial number is used to associate the customer with their product and helps in speedy verification during the warranty claim process. The serial number is usually affixed on each product unit and can be found in different locations depending on the manufacturer. For example, in Wave Sport kayaks, the serial number is located on the outside stern (back) of the boat, close to the line where the deck and side meet. In Newport Vessels, the serial number is located on the underside of the tiller handle on the motor. In Blue Wave Boats, the serial number is needed for warranty registration and can be found on the trailer or other boat parts. The serial number is important for warranty claims and can be used to access product, purchase, and warranty information.