US AUTO HISTORY

Free HIN Decoder

Decode a boat's Hull Identification Number (HIN) and identify its manufacturer, model year, and other information encoded in the HIN.

What Is a HIN?

A Hull Identification Number (HIN) is a unique 12-character serial number assigned to a watercraft by its manufacturer. Required by the U.S. Coast Guard for all boats manufactured or imported into the United States since 1972, the HIN serves as a primary identifier for the vessel, much like a VIN does for a car.

What Information Does a HIN Contain?

Unlike a car VIN, a standard HIN does not usually encode the exact boat model, engine size, or trim level. Instead, the HIN format encodes the Manufacturer Identification Code (MIC), the unique hull serial number, the date of certification or manufacture, and the model year. Our free HIN decoder helps you parse this string into its individual, readable components.

How to Decode a HIN

1

Find the HIN

Locate the 12-character identifier stamped on the transom or registration paperwork.

2

Enter the HIN

Type the number into our free watercraft decoder tool above.

3

Click Decode HIN

Submit the form to securely query the U.S. Coast Guard MIC database.

4

Review the Information

Instantly view the manufacturer name, model year, and serial validation.

What Is a Manufacturer Identification Code (MIC)?

The first three characters of a HIN represent the Manufacturer Identification Code (MIC). This code is assigned by the U.S. Coast Guard to the company that built the boat. Our decoder cross-references these three characters with the official USCG database to correctly identify who manufactured your watercraft.

HIN Decoder vs. Watercraft History Report

Free HIN Decoding: Decrypts the 12-character HIN to identify the boat's manufacturer, model year, and serial string. It only provides factory production identification.

Watercraft History Report: A comprehensive paid report that investigates historical records associated with the HIN. When data is available, it can reveal previous ownership history, registration records, accidents, seizures, salvage titles, or environmental damage.

Where Can I Find My HIN?

If you are looking for your boat or PWC's HIN, check these common locations:

  • On the starboard (right) outboard side of the transom (the rear of the boat).
  • Engraved on a secondary unexposed location inside the boat (often near the console or engine bay).
  • On official documentation, such as the state registration, marine insurance policy, or the boat title.

Frequently Asked Questions

A Hull Identification Number (HIN) is a unique 12-character serial number assigned to a boat or personal watercraft by the manufacturer.
Yes, our basic HIN decoder tool is completely free. It extracts manufacturer and model year information. Comprehensive watercraft history reports require a purchase.
A standard Hull Identification Number (HIN) consists of exactly 12 characters. If yours is shorter or longer, it may be invalid or pre-date the modern federal format established in 1972.
No, a free HIN decode only provides original manufacturing information based on the code layout. To check for reported accidents or damage, you must purchase a watercraft history report.
Typically, no. Unlike a car VIN which encodes trim levels and specific models, a HIN usually only encodes the manufacturer, serial number, and production date. The exact marketing model name is often not discernible from the HIN alone.