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A raft is any flat floating structure for travel over water. It is the most basic of boat
Boat

A boat is a watercraft of modest size designed to float or plane on water, and provide transport over it. Usually this water will be inland or in protected coastal areas....
 design, characterized by the absence of a hull.






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Huck and Jim On Raft
Raft Brixham 750pix
A raft is any flat floating structure for travel over water. It is the most basic of boat
Boat

A boat is a watercraft of modest size designed to float or plane on water, and provide transport over it. Usually this water will be inland or in protected coastal areas....
 design, characterized by the absence of a hull. Instead, rafts are kept afloat using any combination of buoyant materials such as wood
Wood

Wood is an organic material; in the strict sense wood is produced as secondary xylem in the stems of woody plants, notably trees but also shrubs, etc....
, sealed barrels, or inflated air chambers. Traditional or primitive rafts are constructed of wood or reeds
Phragmites

Phragmites australis, the common reed, is a large perennial plant Poaceae found in wetlands throughout temperate and tropical regions of the world....
. Modern rafts may also use pontoons
Pontoon (boat)

A pontoon is a flat-bottomed boat or the floats used to support a structure on water. It may be simply constructed from closed cylinder s such as pipes or barrels or fabricated as boxes from metal or concrete....
, drums
Drum (container)

A drum is a cylinder Intermediate bulk container used for shipping bulk goods. Drums can be made of steel, dense paperboard or plastics, and are generally used for the transportation of certain dangerous materials or modest quantities of bulk goods....
, or extruded polystyrene
Polystyrene

Polystyrene , sometimes abbreviated PS, is an Aromaticity polymer made from the aromatic monomer styrene, a liquid hydrocarbon that is commercially manufactured from petroleum by the chemical industry....
 blocks. Inflatable rafts use durable, multi-layered rubberized fabrics. Depending on its use and size, it may have a superstructure
Superstructure

A superstructure is an upward extension of an existing structure above a baseline. This term is applied both to physical structures like buildings, bridges or ships and to conceptual structures as well ....
, masts, or rudders.

Timber rafting
Timber rafting

Timber rafting is a log transportation method in which logs are tied together into rafts and drifted or pulled across a water body or down a flatter river....
 is used by the logging
Logging

Logging is the process in which certain trees are cut down for forest management and timber....
 industry for the transportation of logs, by tying them together into rafts, and drifting or pulling them down a river. This method was very common up until the middle of the 20th century but is now used only rarely.

The type of raft used for recreational rafting
Rafting

Rafting or whitewater rafting is a challenging recreational activity utilizing a raft to navigate a river or other bodies of water. This is usually done on whitewater or different degrees of rough water, in order to thrill and excite the raft passengers....
 is almost exclusively an inflatable boat
Inflatable boat

An inflatable boat is a lightweight boat constructed with its sides and bow made of flexible tubes containing pressurised gas. For smaller boats, the floor and hull beneath it is often flexible....
, manufactured of flexible materials for use on whitewater
Whitewater

Whitewater is formed in a rapid, when a river's Stream gradient drops enough to disturb its laminar flow and create turbulence, i.e. form a bubbly, or aerated and unstable current; the frothy water appears white....
.

See also

  • Lifeboat
    Lifeboat (shipboard)

    A lifeboat is a small watercraft carried on a ship to provide a means of emergency evacuation in the event of a disaster aboard the ship. Lifeboats may be rigid or inflatable vessels; the inflatable type are sometimes referred to as raft....
  • Raft of the Medusa
    Raft of the Medusa

    The Raft of the Medusa is an oil painting of 1818?19 by the French Romantic movement painter and lithography Th?odore G?ricault . Completed when the artist was just 27, the work has become an icon of French Romanticism....
  • Thor Heyerdahl
    Thor Heyerdahl

    Thor Heyerdahl was a Norway ethnographer and adventurer with a scientific background in zoology and geography. Heyerdahl became famous for his Kon-Tiki expedition, in which he sailed 4,300 miles by raft from South America to the Tuamotu Islands....
  • Raft
    Raft (novel)

    Raft is a 1991 science fiction book by author Stephen Baxter. Raft is both Baxter's first novel and first book in the Xeelee Sequence, although the Xeelee are not present....
     by Stephen Baxter
    Stephen Baxter

    Stephen Baxter is a United Kingdom of Great Britain and Northern Ireland hard science fiction author. He was born and raised Roman Catholic. He has degrees in mathematics and engineering....


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