Raft Policy Document
A raft is any flat structure for support or transportation over water. It is usually of basic design, characterized by the absence of a Hull (watercraft), hull. Rafts are usually kept afloat by using any combination of buoyant materials such as wood, sealed barrels, or inflated air chambers (such as Float (nautical), pontoons), and are typically not propelled by an engine. Rafts are an ancient mode of transport; naturally-occurring rafts such as entwined vegetation and pieces of wood have been used to traverse water since the dawn of humanity. Human-made rafts Traditional or primitive rafts were constructed of wood or Phragmites, reeds. Modern rafts may also use Float (nautical), pontoons, Drum (container), drums, or polystyrene, extruded polystyrene blocks. Inflatable rafts up to the 20th century used flotation chambers made of goat- or buffalo-skins, but most now use durable, multi-layered rubberized fabrics. Depending on its use and size, it may have a superstructure, masts, ...
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