Fishing nets are meshes usually formed by knotting a relatively thin thread. About 180 AD the Greek author Oppian wrote the Halieutica, a didactic poem about fishing. He described various means of fishing including the use of nets cast from boats, scoop nets held open by a hoop, and various traps "which work while their masters sleep".
Netting is the principal method of commercial fishing, though longlining, trolling, dredging and traps are also used.
- Artisanal techniques
- Lampuki nets - are an example of a traditional artisanal use of nets. Since Roman times, Maltese fishers have cut the larger, lower fronds from palm trees which they then weave into large flat rafts. The rafts are pulled out to sea by a luzzu, a small traditional fishing boat. In the middle of the day, lampuki fish (the Maltese name for mahi-mahi) school underneath the rafts, seeking the shade, and are caught by the fishers using large mesh nets.
- Cast nets - are round nets with small weights distributed around the edge. They are also called throw nets. The net is caste or thrown by hand in such a manner that it spreads out on the water and sinks. Fish are caught as the net is hauled back in. This simple device has been in use, with various modifications, for thousands of years.
- Drift nets - are nets which are not anchored. They are usually gillnets, and are commonly used in the coastal waters of many countries. Their use on the high seas is prohibited, but still occurs.
- Ghost nets - are nets that have been lost at sea. They can be a menace to marine life for many years.
- Gillnets - catch fish which try to pass through by snagging on the gill covers. Trapped, the fish can neither advance through the net nor retreat.
- Hand nets - are small nets held open by a hoop. They have been used since antiquity. They are also called scoop nets, and are used for scooping up fish near the surface of the water. They may or may not have a handle–if they have a long handle they are called dip nets. When used by anglers to help land fish they are called landing nets. Because hand netting is not destructive to fish, hand nets are used for tag and release, or capturing aquarium fish.
- Seine nets - are large fishing nets that can be arranged in different ways. In purse seining fishing the net hangs vertically in the water by attaching weights along the bottom edge and floats along the top. Danish seining is a method which has some similarities with trawling. A simple and commonly used fishing technique is beach seining, where the seine net is operated from the shore.
- Surrounding nets -
- Tangle nets - also known as tooth nets, are similar to gillnets except they have a smaller mesh size designed to catch fish by the teeth or upper jaw bone instead of by the gills.
- Trawl nets - are large nets, conical in shape, designed to be towed in the sea or along the sea bottom. The trawl is pulled through the water by one or more boats, called trawlers. The activity of pulling the trawl through the water is called trawling.
Read more about this topic: List Of Fishing Techniques
Other articles related to "netting, netting by novation, settlement or payment netting":
In general, netting means to allow a positive value and a negative value to set-off and partially or entirely cancel each other out.
In the context of credit risk, there are at least three specific types of netting:
- Close-out netting: In the counterparty bankruptcy or any other relevant event of default specified in the relevant agreement if accelerated (i.e. effected), all transactions or all of a given type are netted (i.e. set off against each other) at market value or, if otherwise specified in the contract or if it is not possible to obtain a market value, at an amount equal to the loss suffered by the non-defaulting party in replacing the relevant contract. The alternative would allow the liquidator to choose which contracts to enforce and which not to (and thus potentially "cherry pick"). There are international jurisdictions where the enforceability of netting in bankruptcy has not been legally tested.
- Netting by novation: The legal obligations of the parties to make required payments under one or more series of related transactions are canceled and a new obligation to make only the net payments is created.
- Settlement or payment netting: For cash settled trades, this can be applied either bilaterally or multilaterally and on related or unrelated transactions.
- Bilateral Net Settlement System: A settlement system in which every individual bilateral combination of participants settles its net settlement position on a bilateral basis.
- Multilateral Net Settlement System: A settlement system in which each settling participant settles its own multilateral net settlement position (typically by means of a single payment or receipt).
Netting decreases credit exposure and reduces both operational and settlement risk and operational costs.
In the context of pollution control, netting refers to a procedure whereby a company can create a new pollution source only if it makes equal reductions in pollution elsewhere in the company, i.e. it cannot acquire new permits from the outside.
In regards to the BASEL Accords, the first set of guidelines, BASEL I, was missing guidelines on netting. BASEL II introduced netting guidelines.
... Netting was born in Wilkinsburg, Pennsylvania ... Richmond.) In 1935, Netting and Leonard Llewellyn discovered the Cheat Mountain salamander (Plethodon nettingi), a species unique and endemic to West Virginia ... In the mid 1950s, Netting helped create the Museum's field station, Powdermill Nature Reserve ...