Speargun
Speargun is a underwater fishing equipment used primarily in spearfishing. It is a long-range weapon that fires projectiles, known as spears, powered by a mechanism such as a rubber band or compressed gas.
History
The speargun has a long history, with early versions being used by indigenous peoples for centuries. The modern speargun was developed in the early 20th century, with significant advancements in technology and design occurring in the mid to late 20th century.
Design and Operation
A speargun consists of a spear, a stock/barrel, and a handle that contains a trigger mechanism. The spear is typically made of a lightweight but strong material such as aluminium or carbon fiber. The spear is propelled by a mechanism in the handle, which can be powered by a rubber band (in band-powered spearguns) or compressed gas (in pneumatic spearguns).
When the trigger is pulled, the spear is released and propelled towards the target. The speargun is typically aimed by eye, although some models may include sights for more accurate targeting.
Types of Spearguns
There are several types of spearguns, each with its own advantages and disadvantages. The two main types are band-powered and pneumatic.
Band-Powered Spearguns
Band-powered spearguns use one or more rubber bands to propel the spear. The bands are stretched back and hooked onto the spear, and when the trigger is pulled, the bands contract and propel the spear forward. Band-powered spearguns are popular for their simplicity and reliability.
Pneumatic Spearguns
Pneumatic spearguns use compressed gas to propel the spear. The gas is stored in a cylinder in the handle, and when the trigger is pulled, the gas is released and propels the spear forward. Pneumatic spearguns are popular for their power and accuracy, but they can be more complex and difficult to maintain than band-powered spearguns.
Safety
Safety is a major concern when using a speargun. The speargun should always be treated as a loaded weapon, and never pointed at anything that is not intended to be shot. In addition, the speargun should never be loaded until it is ready to be used, and it should always be unloaded before exiting the water.
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Contributors: Prab R. Tumpati, MD