It's the Law: Before Going Out

Hull Identification Number

The Hull Identification Number (HIN) is a unique, 12-digit number assigned by the manufacturer to vessels built after 1972.

• Hull Identification Numbers distinguish one vessel from another. They are engraved in the fiberglass or on a metal plate attached to the transom. You should write down your HIN and put it in a place separate from your vessel in case warranty problems arise or your vessel is stolen.
• Owners of vessels that do not have a HIN must contact the AZGFD prior to registration.
• It is illegal to remove or alter the HIN.