trawl nets definition of trawl nets in the Free Online Encyclopedia.

trawl Sea fishing

1. a large net, usually in the shape of a sock or bag, drawn at deep levels behind special boats (trawlers)

2. a long line to which numerous shorter hooked lines are attached, suspended between buoys

3. Angling another word for troll (sense 2)

trawl [trȯl]

(engineering)

A baglike net whose mouth is kept open by boards or by a leading diving vane or depressor at the foot of the opening and a spreader bar at the top; towed by a ship at specified depths for catching forms of marine life.

trawl - To sift through large volumes of data (e.g. Usenet postings, FTP archives, or the Jargon File) looking for something of interest.

Trawl

a pass fishnet towed through the water by a special ship, called a trawler; it is designed to catch fish such as cod, haddock, banded sea perch, and other marine life.

A trawl is a conical sack of netting that is held open by rigid elements (a beam trawl) or by the hydrodynamic forces that arise when the trawl is moved (an otter trawl). The second type predominates in modern fishing. In trawling, the fish enter the mouth of the trawl and are drawn into the cod, which is the narrow end part. After the trawl is hauled on board the trawler, the cod is untied and the fish are unloaded into the hold or onto the deck.

There are several types of trawls, such as benthic, bathypelag-ic, midwater (which catch fish in the midwater, or pelagic zone), and general-purpose. The headropes of the largest trawls are up to 150 m long; the vertical opening of such nets is 30–35 m, and the horizontal opening is 50 m. These trawls pass up to 6,000 cu m of water per sec. Light and electric current are used to prevent the fish from leaving the area of the trawl. Fishing is made more efficient by the use of instruments to monitor the trawl. Such instruments make it possible to keep track of the trawl opening, the level of trawling, and the accumulation of fish in the net. The manufacture of trawls from synthetic materials, such as olefin polymers and polyamides, makes possible a reduction of the hydrodynamic resistance of the trawl and an increase in its wear-resistance and service life.

REFERENCE

Fridman, A. L., M M. Rozenshtein, and V. N. Lukashov. Proektirovanie i ispytanie tralov. Moscow, 1973.

V. V. RANENKO

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No references found	It revealed that shrimp trawl nets were responsible for more than half of turtle deaths. Dead turtle 'not rare Olive Ridley' by Gulf Daily News (Manama, Bahrain) Fishers will be prohibited from using the practice, which involves dragging large trawl nets along the sea floor, in marine regions where deep-water corals and other sensitive ecosystems are known or likely to exist, unless the area has been previously assessed and protective measures are in place. South Pacific to be protected from destructive fishing by Herro, Alana / World Watch Across the Tasman, New Zealand has led a host of other countries, including Australia, in agreeing to prevent bottom trawling, a fishing method that involves dragging trawl nets along the sea floor, damaging coral reefs in international waters of the South Pacific. A warning and action on coral reef conservation by Ecos	Traverse City Traverse City State Park Traverse County traverse sailing Traverse Station traverse table Traverse, Lake traversia traversier Traversing traversing mechanism travertine Travesty Travianka traviated Traviès de Villers, Charles Joseph travis Travis County Travis, Merle Travis, Walter Travis, William Barret Travis, William Barrett travois Trawl Trawl Line trawl nets Trawler Trawling Tray tray card tray ceiling tray drive tray elevator tray load tray rail tray tower trayle Traylor, Bill Traynor, Roger John Trdat Treachery treacle treacle molding tread tread length tread plate tread return tread run tread width treading barn treadle	Travis Federal Credit Union Travis Nesbitt Travis Perkins Trading Company Travis Regional Armed Forces Committee Travis Unified Teachers Association Travis, Merle Travis, Walter Travis, William Barret Travis, William Barrett TRAVISS travois travois Travolator Travolator travolators Travoprost TRAWG TRAWING trawl trawl trawl Trawl fishing Trawl fishing Trawl Individual Quota trawl line trawl line trawl lines trawl lines trawl net trawl net trawl nets Trawl Resistant Bottom Mount Trawlboat trawled trawled trawler trawler Trawlerman Trawlerman Trawlermen Trawlermen Trawlers Trawlers Trawlers & Trawlering trawling trawling Trawling, Seining and Netting of Fish Trawling, Seining and Netting of Fish Trawlnet trawls trawls Trawlwarp TRAWMAR TRAWQ Trawsfynydd Strategic Integrated Framework Trax Traxiane TRAXS tray tray tray

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It revealed that shrimp trawl nets were responsible for more than half of turtle deaths.

Dead turtle 'not rare Olive Ridley' by Gulf Daily News (Manama, Bahrain)

Fishers will be prohibited from using the practice, which involves dragging large trawl nets along the sea floor, in marine regions where deep-water corals and other sensitive ecosystems are known or likely to exist, unless the area has been previously assessed and protective measures are in place.

South Pacific to be protected from destructive fishing by Herro, Alana / World Watch

Across the Tasman, New Zealand has led a host of other countries, including Australia, in agreeing to prevent bottom trawling, a fishing method that involves dragging trawl nets along the sea floor, damaging coral reefs in international waters of the South Pacific.

A warning and action on coral reef conservation by Ecos

Trawl (redirected from trawl nets)

REFERENCE

Trawl
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