A bateau or batteau is a shallow-draft, flat-bottomed boat which was used extensively across North America, especially in the colonial period and in the fur trade. It was traditionally pointed at both ends but came in a wide variety of sizes. The name derives from the French word, bateau, which is simply the word for boat and the plural, bateaux, follows the French, an unusual construction for an English plural. In the southern United States, the term is still used to refer to flat-bottomed boats, including those elsewhere called jon boats.
Proper spelling remains a problem with researchers. Dr. William E. Trout III, a member of the Virginia Canals and Navigations Society  who has written about the batteaux, explained the issue thus:
We use the spelling "batteau" because we consider that to be the correct spelling for our kind of boat - the James River Batteau, invented by the Rucker brothers in 1771 and later patented. This is the way it was spelled during the batteau era, even in the Virginia state laws. Evidently after batteaux were forgotten and the word was not used anymore, this spelling was forgotten and reverted to the French spelling for that general type of boat (and for boats generally). We have a lot of trouble with editors who don't want to know that the correct spelling for our type of boat was "batteau," just because current dictionaries don't have it. Some regional dictionaries do say that "batteau" was the usual American spelling during the 19th century. The plural is "batteaux." Since 1985 replicas of James River Batteaux have descended the James every year during the week-long James River Batteau Festival, and have explored other rivers in and around Virginia. See Batteau.org
The French explorers of North America used batteaux as well as the native canoes and cartols. The boats' shallow draft worked well in rivers while its flat bottom profile allowed heavy loading of cargoes and provided stability. The smallest batteau required only one crewman, while larger ones required up to five and reach up to 45–58 feet (14-17.5 meters) in length. The largest batteaux could carry two to ten tons of cargo. Batteaux could mount a small sail although the flat bottom was not optimal for sailing. In military records, it is seen that the boats were propelled primarily by oars with one oar being used at the stern as a rudder. Of Louisiana in 1763 it was described: "Beyond the mouth of the Missouri river the bateau of no prying New Orleans trader had ever penetrated." The same author wrote of the Roanoke Valley, Virginia: "One may make a pleasant voyage on the New River from this point to Eggleston's Springs, twenty-five miles further down the current, taking one of the many bateaux which ply constantly on the stream, and simply drifting on the lazy wave until the destination is reached." In the same book, the spelling is given as "batteaux":
"Along the Greenbrier and New Rivers adventurous boatmen ply in "batteaux," carrying merchandise or travelers who wish to explore the wonders of the New River cañon". ... Our artists, who made the tour of the New River cañon in a batteau, found it an exciting experience. At the junction of the Greenbrier and New Rivers they engaged one of the boats used in running the rapids. This boat was sixty feet long by six wide, and was managed by three negroes,--the "steersman," who guided the boat with a long and powerful oar; the headsman, who stood on the bow to direct the steersman by waving his arms; and an extra hand, who assisted with an oar in the eddies and smooth parts of the river. 
Many types of batteaux were deployed by the Colonial French and British militaries, with the largest capable of mounting small cannon or swivel guns. In the wilderness with many rivers but few bridges, batteaux were sometimes constructed, used, then purposely sunk to prevent the enemy from discovering them and using them to raid behind the passing army. Alternately, utilizing the stability of their flat bottoms, batteau could be strung together to form pontoon bridges, which are, therefore, sometimes known as "batteau bridges". Some British military batteau of the French and Indian War could haul twenty men or 12 barrels of supplies with a smaller crew. In the Revolutionary War, an extant plan of the British Admiralty calls for batteau of 30 foot 4 inches (9.25 meters) in length, with a 6 feet 6 inches (2 m) beam and a depth of 2 feet 10 inches (0.86 m)."
Specific designs were developed to suit local conditions. Batteau were used as freight boats on canals in the northern U.S. until replaced by the larger canal boats in the early 1800s. James River batteau were large craft designed for hauling tobacco on Virginia's large rivers, while Mohawk River batteau were smaller and of very shallow draft (and sometimes with awnings). Most of the inland navigations in the southern United States, penetrating the Piedmont by way of the river valleys, were for bateau.
Batteaux were a very important part of the American culture. The town of Ronceverte, West Virginia, commemorates the logging and batteau industry with an annual outdoor theatre, Riders of the Flood, where the spring rains sent harvested timbers down the Greenbrier River for the sawmills.
An ark is used in the play, a scaled-down model of the original crafts that accompanied the batteaux downriver for the spring floods.
West Virginia author W. E. Blackhurst used "bateau" in his books of Pocahontas County and the Greenbrier River. These boats figure in the logging-era book Riders of the Flood, on which the play of the same name is based. This batteau was primarily for logging, meant to maneuver quickly and withstand dangerous river conditions and is built differently from the New River batteau at the confluence of the Greenbrier River.
See also 
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- Virginia Canals and Navigations Society
- Personal correspondence August 30, 2009
- King, Ewward "The Great South: A record of Journeys", p. 216. 1875 "The Great South",[docsouth.unc.edu/nc/king/king.html The Great South]
- Ibid, page 577.
- Ibid. P. 679
- "Batteaux and 'Battoe Men': An American Colonial Response to the Problem of Logistics in Mountain Warfare", http://www.dmna.state.ny.us/historic/articles/bateau.htm, New York State Military Museum, accessed September 11, 2007
- "The Batteau", http://www.nysm.nysed.gov/research_collections/research/history/three/bat3.html, New York State Museum, accessed September 11, 2007
- US Department of the Interior, National Park Service, National Register of Historic Places Inventory and Nomination, accessed July 3, 2010.
- "The New River Atlas: Rediscovering the History of the New and Greenbrier Rivers", published by the Virginia Canals and Navigations Society, 2003.