If problems arise, for example. B a repair that should be carried out, these conditions can be negotiated and set out in a new agreement, or the buyer can get away with a refunded acompens. If a trailer is sold by boat, it is also listed separately with its Vehicle Identification Number (VIN). The agreement should include a separate selling price for the vessel, outboard engine and trailer. The agreement should also list all accessories or equipment sold by boat, such as electronics, trolling engine, replacement mounts, with serial numbers, if available. If you sell the boat, items that are not included in the sale may be mentioned in the sales contract as “excluded”. . . .