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(naval architecture)
A ship designed for catching fish with a trawl.



a commercial fishing vessel designed for catching fish and other marine life with a trawl and for the primary processing of the catch.

Until the mid–20th century, trawlers were built with one deck, and the trawl was lowered and hauled up from the side. Such ships were called side trawlers. Most trawlers built since the 1960’s have two decks, and the mechanisms for lowering, raising, and towing the trawl are installed at the stern; the ships are called stern trawlers. Trawlers are equipped with trawl winches; up to 4,000 m of trawl line wound around the drums of the winches makes it possible to fish at depths of up to 2 km; the power of the winch engines may reach 450 kilowatts (kW). The trawl is raised onto the ship’s stern slipway, or ramp. The processing equipment of a trawler includes machines and mechanized lines for gutting and cleaning the fish, sometimes for canning, and for the production of fish meal and oil from the wastes. The holds have refrigerators for freezing the fish and for preserving the products. Most present-day trawlers have fish-finding equipment and instruments for controlling the trawl, which makes it possible to direct the movement of the trawl in the water and to guide it toward concentrations of fish.

The largest trawlers are built (1976) in the USSR and Japan. They are 100–110 m long, with a displacement of 7,000–8,000 tons; their main engines have a power of 4.5 MW, giving them a cruising speed of more than 25 km/hr. Seiner-trawlers, which have become widespread, can catch fish both with a trawl and with a purse seine.


References in periodicals archive ?
The earlier arrested 4 Tamil Nadu fishermen along with their fishing trawler and fishing gear have been brought to the naval base SLNS Elara in Karainagar.
The report by the Marine Casualty Investigation Board recommended that the Minister for Transport, Tourism and Sport issue a warning of the hazards associated with toxic gas generation and retention in refrigerated seawater (RSW) systems of fishing trawlers, according to the Irish Examiner.
When authorities were alerted of the trawler, a source told them the captain was aged between 30 and 40, slim and named Adel.
The investigative committee said it is likely that the trawler hit "an object" floating in the sea.
The Dalniy Vostok trawler sank in the Sea of Okhotsk shortly before midnight on Wednesday, around 300 kilometers, or 186 miles, from the Russian port city of Magadan.
On Wednesday, Russian fishing trawler Dalniy Vostok with more than 130 passengers on board sank in the Sea of Okhotsk, killing 54 people.
The Dalniy Vostok freezer trawler had 132 people on board when it sank.
e trawler, the Olive Branch, had two people on board and was on passage from Liverpool to Portsmouth when it got into di[euro]culty o the west coast of Anglesey on Monday night.
The 1,753-ton trawler Oryong 501 sank off the coast of the Chukotka region in northeast Russia after a wave hit as the crew was hauling in its catch of pollock fish, says the Times.
In an operation lasting several hours the stricken trawler was refloated and towed to a yard on the Tyne.
But Vodafone's specialists soon found the mystery cause - a trawler jamming their phones.
This perhaps will be the first occasion when a service ship has rammed into a fishing trawler, splitting it into two and killing atleast one.