How to Find the Serial Number on an Aluminum Boat

by Melissa O'Connor

The serial number is part of the hull identification number (HIN) on your boat. It consists of the manufacturer ID code, the hull serial number and the date the boat was built. The first three letters are assigned by the U.S. Coast Guard, and they identify the manufacturer of the boat. The second set of numbers represents the unique hull number, and the last set represents the model and year of the boat. Locating the serial number on a boat is quite easy if you know where to look.

Step 1

Locate the hull of the boat.

Step 2

Look for the serial number on the hull or the hull member. It should be located on the transom, above the waterline. It may also be printed on a small plate.

Step 3

Check the starboard side of the hull if the boat has no transom. If your boat has more than one hull, check the outermost starboard side at the end of the hull.

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