A New York boat bill of sale is a document recording the sale of a boat between a seller and a buyer. The New York Boat Bill of Sale form is a legal document used to transfer ownership of a boat from one individual to another in the state of New York.A boat bill of sale is a document used to record the change of ownership of a watercraft. The completed form will include a description of the watercraft, the purchase price, and both parties' signatures. Transfer a boat's ownership with a seller warranty. Use our attorney-drafted boat bill of sale template to outline the terms and conditions clearly. A boat (vessel) bill of sale provides a buyer with proof that they purchased a watercraft. The form must be signed and can also be notarized for further validity. This bill of sale form is used in cases when you decide to buy or sell a boat along with a trailer in the United States of America. Seller of motor vehicle or vessel must complete, sign and give this form to the purchaser.