On the starboard side of the transom
This is a Bayliner, built in 1989, most likely a smaller bow rider/runabout.
On my 1995 Bayliner the VIN or Hull number is stamped into the right side of the TRANSOM
On Bayliner boats, the hull number, also known as the Hull Identification Number (HIN), is typically located on the transom, which is the rear part of the boat, or on the starboard side at the top of the transom. It can also be found on the boat's registration documents or manufacturer's paperwork. The HIN is usually a 12-character alphanumeric code that provides information about the boat's manufacturer, model, and year of production. If you're having trouble locating it, check the owner's manual for specific guidance.
The first two letters BL. Stand for Bayliner, the last three numbers are the month the hull was produced 090 which means Oct of 1990 ( 190 would be Jan of 90)
The hull on a boat is the body of it. It is watertight so that no water leaks in and sinks the boat.
On the hull
Displacement: The weight of the water the boat displaces. Hull weight: The weight of the hull of the boat
the hull helps keep the boat stable, if there was no hull, the boat would go in different directions
A hull is the watertight body of a ship or boat. Above the hull is the superstructure and/or deckhouse, where present. The line where the hull meets the water surface is called the waterline.
The hull of a boat is the main body that rides in the water. Engines, Decks, masts and rudders are all installed in or on the hull.
Basically, the hull on a boat keeps out the water, and displaces the water to create buoyancy, which enables the boat to float.
A single hull boat has only one hull, which is the standard for boats. Catamarans have two, or twin hulls.