PADDLE STEAMER

A 'paddle steamer' is a ship or boat driven by a steam engine that uses one or more ''paddle wheels'' to develop thrust for propulsion. It is also a type of steamboat. Boats with paddle wheels on the sides are termed 'sidewheelers', while those with a single wheel on the stern are known as 'sternwheelers'. Although generally associated with steam power, 'paddleboats', or 'paddlewheelers' have also been driven by diesel engines, animal power, or human power.
The paddle wheel was the first form of mechanical propulsion for a boat, but has now been almost entirely superseded by the screw propellor and other, more modern, forms of .
A sternwheeler paddleboat in Louisiana.


Contents
Paddle wheels
Types of paddle steamer
Early developments
Seagoing paddle steamers
Modern paddle steamers
See also
Notes
References

Paddle wheels



The paddle wheel is a large wheel, generally built of a steel framework, upon the outer edge of which are fitted numerous paddle blades (called ''floats'' or ''bunkets''). In the water, the bottom quarter or so of the wheel is underwater. Rotation of the paddle wheel produces thrust, forward or backward as required. More advanced paddle wheel designs have featured ''feathering'' methods that keep each paddle blade oriented closer to vertical while it is in the water; this increases efficiency.

Types of paddle steamer


The ''Music City Queen'' on the Cumberland River in Nashville is a stern-wheeler showboat.
There are two basic ways to mount paddle wheels on a ship; a single wheel on the rear, known as a ''stern-wheeler'', and a paddle wheel on each side, known as a ''side-wheeler''.
Stern-wheelers have generally been used as riverboats, especially in the United States, where they still operate for tourist use on the Mississippi River. On a river, the narrowness of a stern-wheeler is preferable.
Side-wheelers, meanwhile, have also been used as riverboats, but also commonly as coastal craft. While wider than a stern-wheeler, due to the extra width of the paddle wheels and their enclosing ''pontoons'', a side-wheeler has extra maneuverability since the power may be directed to one wheel at a time.

Early developments


Ox-powered Roman paddle wheel boat from a 15th century copy of ''De Rebus Bellicis''

The use of a paddle wheel in navigation appears for the first time in the mechanical treatise of the Roman engineer Vitruvius (''De architectura'', X 9.5-7), where he describes multi-geared paddle wheels working as a ship odometer. The first mention of paddle wheels as a means of propulsion comes from the late 4th century military treatise ''De Rebus Bellicis'' (chapter XVII), where the anonymous Roman author describes an ox-driven paddle wheel warship:
A Chinese paddle-wheel driven ship from a Qing Dynasty encyclopedia published in 1726.

Paddleboats were built in China from the 5th-6th Centuries,[1] and according to the ''Water Margin'' were used in the 12th century. A successful paddle wheel warship design was made by Prince Li Gao in 784 AD, during the Tang Dynasty (618-907 AD).[2] The Chinese Song Dynasty (960 - 1279 AD) issued the construction of many paddle-wheel ships for its standing navy, and according to historian Joseph Needham:

"...between 1132 and 1183 (AD) a great number of treadmill-operated paddle-wheel craft, large and small, were built, including stern-wheelers and ships with as many as 11 paddle-wheels a side,” [3].

In 1543 the Basque engineer Blasco de Garay in Barcelona made an experimental vessel propelled by a paddle-wheel on each side, worked by forty men. In the same year he showed Carlos I of Spain (also known as Charles V, the Holy Roman Emperor, a new idea - a ship propelled by a giant wheel powered by steam, but Carlos was not interested in it.[4]
In 1787 Patrick Miller of Dalswinton invented a double-hulled boat, which was propelled on the Firth of Forth by men working a capstan which
drove paddles on each side. Men of Invention and Industry, , , Smiles, Samuel, Gutenberg e-text, ,
The first paddle steamer was the ''Pyroscaphe'' built by Marquis Claude de Jouffroy of Lyon in France, in 1783. It had a horizontal double-acting steam engine driving two 13.1 ft (4 m) paddle wheels on the sides of the craft. On July 15, 1783 it steamed successfully up the Saône for fifteen minutes before the engine failed. Political events interrupted further development.
The next successful attempt at a paddle-driven steam ship was by the Scottish engineer William Symington who suggested steam power to Patrick Miller of Dalswinton. Experimental boats built in 1788 and 1789 worked successfully on Lochmaben Loch. In 1802, Symington built a barge-hauler, ''Charlotte Dundas'', for the Forth and Clyde Canal Company. It successfully hauled two 70-ton barges almost 20 miles (30 km) in 6 hours against a strong headwind on test in 1802. There was much enthusiasm, but some directors of the company were concerned about the banks of the canal being damaged by the wash from a powered vessel, and no more were ordered.
While ''Charlotte Dundas'' was the first commercial paddle-steamer and steamboat, the first commercial ''success'' was possibly Robert Fulton's Clermont in New York, which went into commercial service in 1807 between New York City and Albany. Many other paddle-equipped river boats followed all round the world.

Seagoing paddle steamers


PS ''Waverley'', the last sea-going paddle steamer.

The first sea-going trip of a paddle steamer was that of the ''Albany'' in 1808, which steamed from the Hudson River along the coast to the Delaware River. This was purely for the purpose of moving a river-boat to a new market, but the use of paddle-steamers for short coastal trips began soon after that.
The first paddle-steamer to make a long ocean voyage was the ''SS Savannah'', built in 1819 expressly for this service. ''Savannah'' set out for Liverpool on May 22, 1819, sighting Ireland after 23 days at sea. This was the first powered crossing of the Atlantic, although ''Savannah'' also carried a full rig of sail to assist the engines when winds were favorable. In 1822, Charles Napier's ''Aaron Manby'', the world's first iron ship, made the first direct steam crossing from London to Paris and the first seagoing voyage by an iron ship anywhere.
In 1838, ''Sirius'', a fairly small steam packet built for the Cork to London route, became the first vessel to cross the Atlantic under sustained steam power, beating Isambard Kingdom Brunel's much larger ''Great Western'' by a day. ''Great Western'', however, was actually built for the transatlantic trade, and its crossing began the regular sailing of powered vessels across the Atlantic. ''Beaver'' was the first coastal steamship to operate in the Pacific Northwest of North America.
Paddle steamers helped open Japan to the Western World in the mid-19th century. Pictured: either the ''Mississippi'' or the ''Susquehanna'' of Commodore Perry's fleet.

The largest paddle-steamer ever built was Brunel's ''Great Eastern'', but it also had an additional screw propulsion and sail rigging. It was 692 feet (211 m) long and weighed 32,000 tons, its paddle-wheels being 56 ft (17 m) in diameter.
In oceangoing service, paddle steamers became obsolete rather quickly with the invention of the screw propeller, but they remained in use in coastal service and as river tugboats, thanks to their shallow draught and good maneuverability.

Modern paddle steamers



CGN paddle steamer ''Montreux'' leaving Évian-les-Bains in July 2002.

A paddlewheeler in Vancouver, Canada is popular with tourists

Few original paddle steamers remain in existence, and those that do are mainly preserved for tourists or as museums. Some paddle steamers still operate on the Mississippi River, as do a few in the United Kingdom and elsewhere in Europe.
''PS Waverley'', built in 1947, is the last sea-going paddle steamer in the world. This ship sails a full season of cruises every year from ports around Britain, and has sailed across the English Channel to commemorate the sinking of her predecessor of 1899 at the Battle of Dunkirk.
PS ''Skibladner'' is the oldest steamship in regular operation. Built in 1856, she still operates on lake Mjøsa in Norway.
PS ''Adelaide'' is the oldest wooden-hulled paddle steamer in the world. Built in 1866, she operates from the Port of Echuca, on Australia's Murray River, which has the largest fleet of paddle steamers in the world.
The Elbe river Saxon Paddle Steamer Fleet in Dresden (known as "White Fleet"), Germany, is said to be the oldest and biggest in the world, which over ca. 700.000 passengers per year.[5]
The 1913 built Goethe is the last one on the Rhine river. It is the worlds greatest sidewheeler with a 2-cyl. steam engine of 700HP, a length of 83m and a height above water of 9,2m.
Switzerland too has a large paddle steamer fleet, most of the "Salon Steamer-type" built by Sulzer in Winterthur or Escher-Wyss in Zürich. There are five active and one inactive on Lake Lucerne, two on Lake Zürich, and one each on Lake Brienz, Lake Thun and Lake Constance.
There are a number of paddle steamers operated on Lake Geneva, by Swiss company CGN. CGN operates a fleet of vessels including three converted to diesel electric power in the 1960s and five retaining steam. One, ''Montreux'', has been reconverted in 2000 from diesel to an all-new steam engine. It is the world's first electronically remote-controlled steam engine and has operating costs similar to state of the art diesels, while producing up to 90 percent less air pollution.
In Soviet Union, the river paddle steamers of the type ''Iosif Stalin'' (project 373), later renamed as type ''Ryazan'', were built until 1951. Between 1952 and 1959 ships of this type were build for Soviet Union by Obuda Hajogyar Budapest factory in Hungary. In total, 75 type ''Iosif Stalin/Ryazan'' paddle steamers were build. Few of them still remain in active service, as in 2007.[6][7] ''Iosif Stalin/Ryazan'' paddle steamers are side-wheelers. They are 70 m long and can carry up to 360 passengers.
A small paddle steamer fleet operates on the lake of Como, Italy, mostly but not only for touristic purposes.
The restored paddle steamer 'Waimarie' is based in Wanganui, New Zealand. The Waimarie was built in kitset form in Poplar, London in 1899, and originally operated on the Whanganui River under the name 'Aotea'. Later renamed, she remained in service until 1949. She sank at her moorings in 1952, and remained in the mud until raised by volunteers and restored to begin operations again in 2000.[8]
The paddle steamer ''Curlip'' is currently being reconstructed in Gippsland Australia.

See also



Steamboat

Black Ships

Technology of the Song Dynasty

Notes



1. Nito Verdera, referring to Joseph Needham's ''Science and Civilisation in China''.
2. Needham, Volume 4, Part 3, 31.
3. Needham, 476
4. Kurlansky, Mark. 1999. ''The Basque History of the World''. Walker & Company, New York. ISBN 0-8027-1349-1, p. 56
5. http://www.saechsische-dampfschiffahrt.de/?sprache=en (the biggest and oldest)
6. Russian river ships (in English)
7. Russian passenger river fleet (in Russian)
8. Whanganui River Boat Centre


References



★ Needham, Joseph (1986). ''Science and Civilization in China: Volume 4, Part 3''. Taipei: Caves Books, Ltd.

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