Often called the "license plate" for your vessel, registration numbers are required for most motorized boats. These are issued by your state’s boating authority or DMV.
Letters must be and at least 3 inches high . BOAT NUMBERS
Usually, these are placed within 3 to 6 inches of the registration number, typically behind it (towards the stern). 3. Hull Identification Number (HIN) Often called the "license plate" for your vessel,