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Water cannon of the French National Police deployed in prevision of rioting following Nicolas Sarkozy's election, May 6, 2007
Water cannon of the French National Police deployed in prevision of rioting following Nicolas Sarkozy's election, May 6, 2007

A water cannon is a device that shoots a high-pressure stream of water. Typically, water cannons deliver a large volume of water, often over hundreds of feet (tens of metres). Image File history File linksMetadata Size of this preview: 800 × 600 pixelsFull resolution (2560 × 1920 pixel, file size: 795 KB, MIME type: image/jpeg) French National Police water cannon waiting in front of the Grand Palais, Champs-Élysées, in case of rioting following Nicolas Sarkozys election Copyright © 2007... Image File history File linksMetadata Size of this preview: 800 × 600 pixelsFull resolution (2560 × 1920 pixel, file size: 795 KB, MIME type: image/jpeg) French National Police water cannon waiting in front of the Grand Palais, Champs-Élysées, in case of rioting following Nicolas Sarkozys election Copyright © 2007... The National Police (Police Nationale) is one of two national police forces and the main civil law enforcement agency of France, with primary jurisdiction in cities and large towns. ... Nicolas Sarkozy   (born Nicolas Paul Stéphane Sarközy de Nagy-Bocsa on 28 January 1955 in Paris, France) is the President-Elect of France after defeating Socialist Party leader Ségolène Royal during the 2007 election. ... The use of water pressure - the Captain Cook Memorial Jet in Lake Burley Griffin, Canberra. ... Impact from a water drop causes an upward rebound jet surrounded by circular capillary waves. ...


Fireboats

Water cannons were first devised for use on fireboats. Putting out fires on boats and buildings close to the water was much more difficult and dangerous before fireboats were invented. The first fireboat deployed in Los Angeles was commissioned on August 1, 1919. The first fireboat in New York City was Marine 1, deployed February 1, 1891. There may have been other fireboats elsewhere even earlier. The fireboat Guardian was a gift of survivors of the Loma Prieta earthquake to supplement San Franciscos fireboat Phoenix. ... A forest fire Fire is a rapid oxidation process that creates light, heat, and smoke, and varies in intensity. ... Flag Seal Nickname: City of Angels Location Location within Los Angeles County in the state of California Coordinates , Government State County California Los Angeles County Mayor Antonio Villaraigosa (D) Geographical characteristics Area     City 1,290. ... August 1 is the 213th day of the year in the Gregorian calendar (214th in leap years), with 152 days remaining. ... Year 1919 (MCMXIX) was a common year starting on Wednesday (link will display the full calendar). ... New York, NY redirects here. ... February 1 is the 32nd day of the year in the Gregorian calendar. ... Year 1891 (MDCCCXCI) was a common year starting on Thursday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Saturday of the 12-day slower Julian calendar). ...


Riot control

On occasion, a stream of water from a fireboat would knock a sailor down, and noting this, someone observed that such a device would be effective at riot control. Truck-based water cannon systems were used widely in the United States during the 1960s for riot control. Although they were safer than a combination of firearms, tear gas, and batons, their use as a less-lethal riot control mechanism has fallen out of favor in the United States. Pictures of riots being dispersed by water cannons remind some of the American Civil Rights Movement when they were used by authorities to disperse crowds of protesting African Americans; this reminder is one reason why the water cannon has fallen out of favor in the USA. French mobile gendarmes doing riot control. ... The 1960s decade refers to the years from January 1, 1960 to December 31, 1969, inclusive. ... An assortment of modern hand-held firearms using fixed ammunition, including military assault rifles, a sporting shotgun (fourth from bottom), a tactical shotgun (third from bottom), and a sporting rifle (top). ... A riot control agent is a type of lachrymatory agent (or lacrimatory agent). ... A club, cudgel, truncheon, night stick, or bludgeon is among the simplest of all weapons. ... Non-lethal force is force which is not inherently likely to kill or cause great bodily injury to a living target. ... French mobile gendarmes doing riot control. ... Martin Luther King is perhaps most famous for his I Have a Dream speech, given in front of the Lincoln Memorial during the 1963 March on Washington for Jobs and Freedom This article is about the civil rights movement following the Brown v. ... An African American (also Afro-American, Black American, or simply black) is a member of an ethnic group in the United States whose ancestors, usually in predominant part, were indigenous to Africa. ...


Since then, other higher-tech non-lethal weapons have been developed for domestic use. Whether these newer weapons are more effective and safer than water cannons remains controversial. Their competing vendors disagree as to which is more effective and safer. Non-lethal force is force which is not inherently likely to kill or cause great bodily injury to a living target. ... A vendor is one who sells something. ...


Water cannons designed for riot control are still made in the United States and the United Kingdom, but most customers are overseas, particularly in Africa and parts of Asia. The most modern versions do not expose the operator to the riot, and are controlled remotely from within the vehicle with a joystick. These high-end vehicles can carry 2000 gallons (8,000 L) of water with a delivery rate of 250 gallons per minute (15 L/s). The water can be delivered as a continuous stream, or in pulses; as a hard jet or as a spray. A world map showing the continent of Africa Africa is the worlds second-largest and second most-populous continent, after Asia. ... World map showing the location of Asia. ... Joystick elements: 1. ... The gallon (abbreviation: gal) is a unit of volume. ... The litre or liter (U.S. spelling, see spelling differences) is a unit of volume. ...


Safety of water cannons for riot control

German police water cannon
German police water cannon

There are several well documented cases where rioters have been killed by other weapons used with water cannons. There are several cases where rioters have killed police while water cannons were being used. There are no reports of a water cannon operator being killed. Image File history File links Size of this preview: 800 × 410 pixelsFull resolution (1577 × 809 pixel, file size: 764 KiB, MIME type: image/jpeg) Beschreibung: Ein Wasserwerfer der deutschen Polizei bei einer Demo in Leipzig Quelle: selbst aufgenommen Fotograf: CrazyD, 1. ... Image File history File links Size of this preview: 800 × 410 pixelsFull resolution (1577 × 809 pixel, file size: 764 KiB, MIME type: image/jpeg) Beschreibung: Ein Wasserwerfer der deutschen Polizei bei einer Demo in Leipzig Quelle: selbst aufgenommen Fotograf: CrazyD, 1. ...


A report issued in the United Kingdom said that use of plastic bullets over water cannon was justified because "Water cannons are inflexible and indiscriminate", although several people had been very seriously injured by plastic bullets. The plastic bullet is the name given to a type of nonlethal projectile fired from a specialised gun, used in riot control. ... The plastic bullet is the name given to a type of nonlethal projectile fired from a specialised gun, used in riot control. ...


(Over the years, 17 people have been killed by plastic bullets in Northern Ireland. Nine of those who died were children under the age of 18 - the youngest aged 10. Since 1997 the government has paid out £2.5m in settlements of claims for injury by plastic bullets) Anthem: UK: God Save the Queen Regional: (de facto) Londonderry Air Capital Belfast Largest city Belfast Official languages English (de facto), Irish, Ulster Scots 3, BSL, NISL, ISL Government Constitutional monarchy  - Queen Queen Elizabeth II  - Prime Minister of the UK Tony Blair MP  - First Minister Ian Paisley  - Deputy First Minister...


Anecdotal reports indicate that people can walk away from an encounter with a water cannon with serious internal injuries such as a ruptured spleen. If true and if such injuries are ignored, death could occur later. Since this type of injury is difficult to self diagnose, a person should seek medical attention as soon as possible after an encounter with a water cannon. The high pressure a modern water cannon can produce (up to 30 bar) can break bones. There have been reports of cobblestone streets being torn open by the jet of water. The spleen is an organ of the lower abdomen, where it functions in the destruction of old red blood cells and holding a reservoir of blood. ... The bar (symbol bar) and the millibar (symbol mbar, also mb) are units of pressure. ... A cobblestone-covered street Cobblestones are stones used in the pavement of early streets. ...


Effects of the press

The presence of the media at riots has had a significant impact on water cannon use. There is much pressure on police departments to avoid bad publicity. Water cannon use would play badly in the press, and is likely a reason that they are not used more often in countries with a free press. It has been suggested that this article be split into multiple articles accessible from a disambiguation page. ...


In 2002 in Salt Lake City, during the Winter Olympics, an unruly crowd was dispersed with a few pepper ball guns. This was covered by the press and seemed to play better on television than water cannons would have. Pepper ball use has increased with over one million rounds per year being sold now. For album titles with the same name, see 2002 (album). ... The Salt Lake Temple of The Church of Jesus Christ of Latter-day Saints is Salt Lake Citys top tourist draw. ... A runner carries the Olympic torch The Winter Olympic Games, Winter Olympics for short but more correctly The Olympic Winter Games, are the cold-weather counterpart to the Summer Olympic Games. ... Pepper Ball (sometimes spelled as PepperBall) is a projectile weapon made up of a powdered chemical that irritates eyes and nose. ...


In some places, rioters have become semi-professionals, travelling to the sites of likely riots. This is particularly noted in sports-related riots in Europe. For example, France, Poland and England commonly have riots related to football (soccer) matches. Rioters have become quite sophisticated at understanding and withstanding the tactics used by police in such situations. Manuals for successful rioting are available on the Internet. These manuals also encourage rioters to get the press involved, as there is more safety with the cameras rolling. There is also more attention. Citizens with video cameras may also have an effect on both rioters and police. This article or section is not written in the formal tone expected of an encyclopedia article. ... This article is 150 kilobytes or more in size. ... Motto (French) God and my right Anthem God Save the King (Queen) England() – on the European continent() – in the United Kingdom() Capital (and largest city) London (de facto) Official languages English (de facto) Government Constitutional monarchy  -  Queen Queen Elizabeth II  -  Prime Minister Tony Blair MP Unification  -  by Athelstan 967  Area... Football (soccer) - Wikipedia, the free encyclopedia /**/ @import /skins-1. ... A video camera is a camera used for electronic motion picture acquisition, initially developed by the television industry but now common in other applications as well. ...


Dye used in water cannon

In 1997, pink dye was reportedly added to the water used by Indonesian police to disperse a riot.[1] The implication is that they might use this mark to make it easier to arrest rioters later. The United Kingdom, who sold the water cannons to Indonesia, condemned this practice, (although the Royal Ulster Constabulary had used a water cannon with purple dye during The Troubles in Northern Ireland) but later approved the sale of more water cannons to them. Most modern water cannons are also capable of adding tear gas to the stream. 1997 (MCMXCVII) was a common year starting on Wednesday of the Gregorian calendar. ... Look up dye in Wiktionary, the free dictionary. ... The Royal Ulster Constabulary (RUC) was name of the police force in Northern Ireland from 1922 to 2001. ... For the UK post-rock band, see Troubles (band) The Troubles is a term used to describe the latest installment of periodic communal violence involving Republican and Loyalist paramilitary organisations, the Royal Ulster Constabulary (RUC), the British Army and others in Northern Ireland from the late 1960s until the late... Anthem: UK: God Save the Queen Regional: (de facto) Londonderry Air Capital Belfast Largest city Belfast Official languages English (de facto), Irish, Ulster Scots 3, BSL, NISL, ISL Government Constitutional monarchy  - Queen Queen Elizabeth II  - Prime Minister of the UK Tony Blair MP  - First Minister Ian Paisley  - Deputy First Minister...


Soap cannon

Soap cannons have been proposed for crowd control when persons in the crowd may be victims of a suspected bioterror attack. Soap cannons serve the double purpose of crowd control and cleaning people in the crowd. Los Angeles International Airport has a soap cannon which also features pop-out showers so that crowds can be cleansed after being soaped. Also, people who have been soaped up are more likely to stay at the incident site to receive a decontamination treatment (cleansing shower), usually offered after the soaping, so the soap cannon helps to prevent people from fleeing from the scene of a chemical release, i.e. it prevents people from spreading the contamination to others. Bioterror is the use of biological agents for terrorism. ... Runway layout at LAX “LAX” redirects here. ... Decontamination of humans is usually done by a three step procedure, separated by sex: removal of clothing, washing, and reclothing. ...


Sewage

There have been incidents of antiriot watercannons being loaded with sewage instead of clean water. [2] Sewage is the liquid water produced by human society which typically contains washing water, laundry waste, faeces, urine and other liquid or semi-liquid wastes. ...


Electric water cannons

One manufacturer is experimenting with additives (salt and additives to reduce the breakup of the stream into droplets) that would allow electricity to be conducted through water. They have demonstrated delivery from a distance of up to twenty feet (6 m), but have not yet tested the device on people. Lightning strikes during a night-time thunderstorm. ... A foot (plural: feet or foot;[1] symbol or abbreviation: ft or, sometimes, ′ – a prime) is a unit of length, in a number of different systems, including English units, Imperial units, and United States customary units. ... The metre (or meter, see spelling differences) is a measure of length. ...


Although referred to as an electrified water cannon, this experiment involved a water jet much less powerful than a water cannon. The electrified water cannon is a non-lethal weapon under early research by Jaycor Tactical Systems, as part of a program to produce less lethal weapons for law enforcement officers. ...


Other water delivery devices

Water cannons differ from other similar devices in the volume of water delivered in a given time, the nozzle speed, the pressure that it is delivered at, and to a lesser extent the total volume that can be delivered. They are also generally portable. The method of employment is also important in labelling a device a water cannon. Nevertheless, the distinction between a water cannon and other similar devices is fuzzy. For example:- Rocket Nozzle A nozzle is a mechanical device designed to control the characteristics of a fluid flow as it exits from an enclosed chamber into some medium. ...

  • Pressure washers generally produce an extremely high pressure stream where the power of the stream drops off significantly over a very short distance.
  • Water pistols and other toys deliver much less water at a much lower pressure with a much lower volume of water.
  • Fire trucks deliver water with much the same force and volume of force as a water cannon, and have even been used in riot control situations, but are rarely referred to as water cannons outside this context.
  • Ultra high pressure water jet cutters are used to cut a wide variety of materials including granite, ceramics, fabric and even Kevlar. One such cutter delivers 55,000 lbf/in² (380 MPa) through a nozzle 0.003 inch (8 micrometres) in diameter at 1 kilometre per second. This can cut a person in half at close range. There are reports of accidental deaths involving the industrial use of high-pressure water.

It has been suggested that High pressure cleaning be merged into this article or section. ... A squirt gun (or water pistol) is a type of toy designed to shoot water. ... A fire apparatus, fire engine or fire truck or fire appliance usually refers to a vehicle designed to fight fires. ... A diagram of a water jet cutter A water jet cutter is a tool capable of slicing into metal or other materials using a jet of water at high velocity and pressure, or a mixture of water and an abrasive substance. ... Close-up of granite from Yosemite National Park, valley of the Merced River Quarrying granite for the Mormon Temple, Utah Territory. ... Fixed Partial Denture, or Bridge The word ceramic is derived from the Greek word κεραμικός (keramikos). ... Chemical structure of Kevlar. ... A micrometre (American spelling: micrometer, symbol µm) is an SI unit of length equal to one millionth of a metre, or about a tenth of the diameter of a droplet of mist or fog. ...

Other meanings

The name "watercannon" has also been used for:-

Firefighter with an axe A firefighter, sometimes still called a fireman though women have increasingly joined firefighting units, is a person who is trained and equipped to put out fires, rescue people and in some areas provide emergency medical services. ... A swimming pool, sometimes also referred to in some countries as a swimming bath(German. ... This article is about mineral extraction. ... Leaves are an Icelandic five-piece alternative rock band who came to prominence in 2002 with their debut album, Breathe, drawing comparisons to groups such as Coldplay and Doves. ...

References

  1. ^ Indonesia and East Timor: Arms and security transfers undermine human rights. 3 June 1997. Amnesty International [1]

External links

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  Results from FactBites:
 
water cannon: Definition and Much More from Answers.com (1538 words)
Water cannons designed for riot control are still manufactured in the United States and the United Kingdom, but most customers are overseas, particularly in Africa and parts of Asia.
Water cannons differ from other similar devices in the volume of water delivered in a given time, the nozzle speed, the pressure that it is delivered at, and to a lesser extent the total volume that can be delivered.
Fire trucks deliver water with much the same force and volume of force as a water cannon, and have even been used in riot control situations, but are rarely referred to as water cannons outside of this context.
Agricultural water cannon - Patent 4858832 (4722 words)
An agricultural water cannon as claimed in claim 3 in which the power means to pivot said tail boom tube on the axis of its hinged connection to said suction boom tube is an hydraulic cylinder and piston connected by hydraulic power lines to said motive power source.
An agricultural water cannon as claimed in claim 5 in which the transmission means to transmit rotary power to the drive shaft of said high pressure centrifugal pump from said power takeoff of said motive power source is a belt and pulley connection.
The tractor and water cannon are aligned in the transport position a short distance from the body of water with the tractor facing away from the water body and the pressure boom assembly free of any constraint to pivoting on universal hinge 38.
  More results at FactBites »

 
 

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