Riverboat

These vessels are usually less sturdy than ships built for the open seas, with limited navigational and rescue equipment, as they do not have to survive the high winds or large waves characteristic to large lakes, seas or oceans. They can thus be built from light composite materials. They are limited in size by width and depth of the river as well as the height of bridges spanning the river. They can be designed with shallow drafts, as were the paddle wheel steamers on the Mississippi River that could operate in water under two metres deep.

While a ferry is often used to cross a river, a riverboat is used to travel along the course of the river, while carrying passengers or cargo, or both, for revenue. (Vessels like 'riverboat casinos' are not considered here, as they are essentially stationary).

The significance of riverboats is dependent on the number of navigable rivers and channels as well as the condition of the road and rail network. Generally speaking, riverboats provide slow but cheap transport especially suited for bulk cargo and containers.

Riverboat with passengers, Japan, 1909

As early as 20,000 BC people started fishing in rivers and lakes using rafts and dugouts. Roman sources dated 50 BC mention extensive transportation of goods and people on the river Rhine. Upstream, boats were usually powered by sails or oars. In the Middle Ages, towpaths were built along most waterways to use working animals or people to pull riverboats. In the 19th century, steamboats became common.

Model of an early 20th-century shallow draft stern wheel riverboat, the Upper Sacramento River steamer Red Bluff.

The most famous riverboats were on the rivers of the midwestern and central southern United States, on the Mississippi, Ohio and Missouri rivers in the early 19th century. Out west, riverboats were common transportation on the Colorado, Columbia, and Sacramento rivers. These American riverboats were designed to draw very little water, and in fact it was commonly said that they could "navigate on a heavy dew".[1]

Australia has a history of riverboats. Australia's biggest river, the Murray, has an inland port called Echuca. Many large riverboats were working on the Murray, but now a lower water level is stopping them. The Kalgan River in Western Australia has had two main riverboats, the Silver Star, 1918 to 1935, would lower her funnel to get under the low bridge. Today, the Kalgan Queen riverboat takes tourists up the river to taste the local wines. She lowers her roof to get under the same bridge.

It is these early steam-driven river craft that typically come to mind when "steamboat" is mentioned, as these were powered by burning wood, with iron boilers drafted by a pair of tall smokestacks belching smoke and cinders, and twin double-acting pistons driving a large paddlewheel at the stern, churning foam. This type of propulsion was an advantage as a rear paddlewheel operates in an area clear of snags, is easily repaired, and is not likely to suffer damage in a grounding. By burning wood, the boat could consume fuel provided by woodcutters along the shore of the river. These early boats carried a brow (a short bridge) on the bow, so they could head in to an unimproved shore for transfer of cargo and passengers.

Modern riverboats are generally screw (propeller)-driven, with pairs of diesel engines of several thousand horsepower.

The standard reference for the development of the steamboat is Steamboats on Western Rivers: An Economic and Technological History by Louis C. Hunter (1949).[2]

Many of the riverboats shown below were operating on the Yangtze River (Chang Jiang).

Terrace, British Columbia, Canada, celebrates "Riverboat Days" each summer. The Skeena River passes through Terrace and played a crucial role during the age of the steamboat. The first steam-powered vessel to enter the Skeena was the Union in 1864. In 1866 the Mumford attempted to ascend the river but was only able to reach the Kitsumkalum River. It was not until 1891 that the Hudson's Bay Company sternwheeler the Caledonia successfully negotiated through the Kitselas Canyon and reached Hazelton. A number of other steamers were built around the turn of the century, in part due to the growing fish industry and the gold rush.[3]

The WT Preston, a museum ship that was once a specialised river dredge, also called a "snagboat".

Wikimedia Commons has media related to Riverboats.

• Crump, Thomas, Abraham Lincoln's World: How Riverboats, Railroads, and Republicans Transformed America. (New York: Continuum, 2009) 272 pp. ISBN 978-1-84725-057-5.
• Nolan, John Matthew. 2,543 Days: A History of the Hotel at the Grand Rapids Dam on the Wabash River
• Lehman, Charles F. (2009). A riverman’s lexicon : in Lehman’s terms. Florissant, Mo.: J.R. Simpson & Associates. ISBN 978-0-9841503-0-4. Nautical terminology specific to towboating and inland waterways.
• Twain, Mark (1883). Life on the Mississippi.