How is a pontoon on a pontoon boat made?

A pontoon on a pontoon boat is typically made from aluminum or fiberglass. The manufacturing process involves shaping the material into a cylindrical form, which is then sealed at the ends to create a watertight chamber. The pontoons are often reinforced with internal ribs for added strength and buoyancy. Finally, they are finished with protective coatings to enhance durability and resistance to corrosion.