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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—the same as serial numbers distinguish one car from another.
  • Are engraved in the fiberglass or on a metal plate permanently 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.

If a vessel has no HIN, or if the manufacturer’s HIN has been removed, obliterated, or altered, the condition must be noted in the application for the Certificate of Title. The DNR will assign an HIN to the vessel.

Hull identification number