Raft

In maritime terminology, a raft is any flat structure that is used for transportation or support on water. Rafts are normally typified by their basic design, and unlike boats, they do not have a hull. A raft is usually kept afloat by the use of buoyant materials such as wood, sealed barrels, or inflated air chambers.

Rafts do not normally have an engine and are instead propelled by oar by a person standing upright. Rafts are also used for leisure purposes and can be attached to the bottom of a river, lake or sea for swimmers and sunbathers to relax upon.