There are benefits is the boat is going to travel outside the United States, there are benefits for lenders that may provide financing for the purchase of the boat as a mortgage can be placed on the boat as opposed to a vehicle title lien in one State. It simplifies the documentation process when a sale is made of a boat outside the State it is registered in. It brings the boat into alignment with federal maritime regulations recording information on debt arrests, liens, accidents, and any other particulars that may affect title.