How do you look up serial number of a j24?

To look up the serial number of a J/24 sailboat, you typically check the transom, which is the flat surface at the back of the boat, or the hull just above the waterline. The serial number is usually stamped or engraved into the fiberglass. Additionally, you can refer to the boat's documentation, such as the owner's manual or registration papers, where the serial number is often listed. If you're unsure, contacting a J/24 class association or the manufacturer may also provide assistance.