A water cannon is a device that shoots high-speed water streams. Typically, water cannons can produce large volumes of water, often more than tens of meters. They are used in fire extinguishers, large vehicle washers, riot control and mining. Most water cannons fall under the category of fire monitors.
Video Water cannon
Fire Brigade
Water cannon was first used for use on fireboats. Fires extinguish ships and buildings near the water are much more difficult and dangerous before the warships are found. The first fireboat ship deployed in Los Angeles was commissioned on August 1, 1919. The first ship in New York City was Marine 1 , deployed on February 1, 1891. There may have been other fireboats elsewhere before.
Fire trucks deliver water with the same strength and volume as water cannons, and have even been used in situations of riot control, but are rarely referred to as water cannons outside this context.
Maps Water cannon
Control riot
Truck driven water cannons were used to control the unrest in Germany in the early 1930s.
The most modern versions do not expose operators to unrest, and are remotely controlled in vehicles by joysticks. The German-made 10,000 WaWe can carry 10,000 liters (2,200 water) of water, which can spread water in all directions through three cannons, all of which are controlled from the vehicle through a joystick. This vehicle has two advanced cannons with a delivery rate of 20 liters per second (260Ã, imp gal/min), and a rear cannon with a delivery rate of 15 liters per second (200Ã, imp gal/min)
Water cannon designed for riot control is still done in the United States and Britain, but most products are exported, mainly to Africa and parts of Asia such as South Korea.
Security
The use of water cannons in the context of riot control may result in injury or death, with fatalities recorded in Indonesia (in 1996, when canon loads contained ammonia), Zimbabwe (in 2007, when the use of cannons in peaceful crowds caused panic) in 2013, when cargoes are filled with "liquid tear gas"), Ukraine (in 2014, with the death of activist and entrepreneur Bogdan Kalynyak, reportedly catches pneumonia after being sprayed by water cannons in freezing temperatures) and South Korea (in 2016, when a 68-year-old farmer died after a wound he had suffered from a water cannon the previous year). The water cannons used during the 1960s, which generally adapt the fire trucks, would bring down the protesters and sometimes, tear off their clothes.
On September 30, 2010, during a protest rally against the Stuttgart 21 project in Germany, a demonstrator was hit in the face by a water cannon. Dietrich Wagner, a retired engineer, suffered damage to his eyelids, and damage to the retina. Eye injuries inflicted on men result in loss of vision almost disappeared. Graphic images were recorded from the event, sparking a national debate about police brutality and proportionality in the use of state power.
According to a report issued in the UK, using plastic bullets instead of water cannons is justified because the latter is "inflexible and indiscriminate", although some people have previously been killed or badly injured by plastic bullets.
Media effects
The presence of media in the riots has had a significant impact on the use of water cannon. There is a lot of pressure on the police department to avoid bad publicity, and water cannons often play poorly in the media. It is estimated that this is a possible reason that they are not used more frequently in certain countries.
The confrontation that took place in the era of the American Civil Rights Movement where a water cannon was used by authorities to disperse a protesting crowd of Americans, has led to the collapse of water cannons in the United States.
Alternative payload
Dye
In 1997, a pink dye was reportedly added to water used by South Korean and Indonesian police to disperse the riots. The implication is that they may use this mark to facilitate the arrest of the rioters later on. The British Empire, which has sold water cannons to Indonesia, condemns this practice (though Ulster's Ulster Kingdom has used a water cannon with purple dye during The Troubles in Northern Ireland) but then approves the sale of further water cannons to them. Most modern water cannons are also capable of adding tear gas to the river.
Electrical water cannons
In 2004, Jaycor Tactical Systems experimented with additives (salts and additives to reduce flow breakages into droplets) that would allow electricity to be made through water. They have shown delivery from a distance of up to twenty feet (6 m), but have not tested the device on people.
Though called an electrically powered cannon, this experiment involves a much weaker water jet than a water cannon.
Other types
Water cannons differ from other similar devices in the volume of water delivered over a period of time, nozzle speed, applied pressure, and to a lower level of total volume that can be sent. They are also generally portable. Work methods are also important in labeling water cannon devices. However, the difference between water cannons and other similar devices is unclear. As an example:-
- The pressure washer generally produces a very high pressure flow in which flow strength decreases significantly over a very short distance.
- Water guns and other toys provide less water at much lower pressures with much lower water volumes.
- Ultra high pressure jet cutter is used for cutting various materials including granite, concrete (see hydrodemolisi), ceramics, fabrics and even Kevlar. One such cutter delivers 55,000 psi (380 MPa) through a nozzle of 0.003 inches (8 micrometers) at a diameter of 1 kilometer per second. It can cut a person into half from close range. There are reports of accidental deaths involving the use of high pressure water industry.
Usage
Water cannons are still used on a large scale in Chile, Belgium and other parts of Europe.
Australia
The state of New South Wales in Australia purchased a water cannon in 2007, with a view to using it during the APEC meeting in Sydney that year. It is not used. It was the first purchase of water cannons in Australia.
German
The annual unrest on May 1 in Berlin, the Schanzenfest exhibition in Hamburg, which usually ends in riots, or other demonstrations, is usually accompanied by water cannons, which support riot police. Germans used their water cannons in the hot summers to water the public parks. The most common water cannon used in Germany, which has more than 60 water cannons in total, is Wasserwerfer 10000.
Turkish
Turkey's TOMA Turkish water cannon has been used against protesters many times, including the 2013 protests in Turkey, and is often present at protests of all sizes.
United Kingdom
Until 2014, although produced there, there were only six water cannons in England, all held by the Northern Ireland Police Service. The use of water cannons outside Northern Ireland is not approved, and would require a mandatory authorization of Parliament in Britain, or from the devolution assemblies in Scotland and Wales. In June 2014, London Deputy Mayor for Police and Crime Stephen Greenhalgh authorized the Metropolitan Police to purchase three used water cannons from the German Federal Police. London Mayor Boris Johnson said the purchase was approved before Parliament approval, as three cannons cost £ 218,000 to buy and would require more than £ 125,000 of work before being considered suitable for service, compared with £ 870,000 for a new machine. But after studying his security and effectiveness, Interior Minister Theresa May told Parliament in July 2015 that he had decided not to license them for use.
United States
Truck-based water cannons were used extensively in the United States during the 1960s to control the unrest. Although they are safer than a combination of firearms, tear gas, and sticks, their use as a non-lethal anti-riot control mechanism is no longer favored in the United States. Since the 1960s, other high-tech non-lethal weapons have been developed for domestic use. Whether the new weapon is more effective and safer than a water cannon remains controversial. Vendors compete they do not agree to a more effective and more secure.
Mine
Water cannons are used in hydraulic mining to remove rock material or move sediments. In gold or tin mining, the resulting water sediment pulp is directed through water boxes to remove gold. It is also used in kaolin and coal mining.
Gallery
Other meanings
The term "water cannon" may also refer to: -
- A similar land vehicle is used for firefighting
- Many great toys, such as images
- Waterjet in hydraulic mining
- The type of train used to remove leaves that fall from the path: e.g. seen at Alexandra Palace on October 25, 2003
- Tools for washing power of large construction equipment. See riveer.com for images, details, and videos
See also
- Weapons are not turning off
- Water pistol
- Riot police
References
Source of the article : Wikipedia
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