The Handbook of Iowa Boating Laws and Responsibilities
The Official Boating Handbook of the Iowa Department of Natural Resources - Web Version
Table of Contents
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 or stamped in the hull transom, or on a metal plate attached to the transom, or are printed on inflated rafts and kayaks.
Record the HIN and put in a place separate from your vessel in case warranty problems arise or your vessel is stolen.
If your vessel is homemade, the County Recorder may issue you an HIN, which you then must affix permanently to the transom.
It is illegal to destroy, remove, cover, or mutilate the HIN.