European seabass (Dicentrarchus labrax), once target of a pair-trawl fishery in the English Channel, now banned due to the high level of cetacean bycatch
Pair trawling is a fishing activity carried out by two boats, with one towing each warp (the towing cables). As the mouth of the net is kept open by the lateral pull of the individual vessels, otter boards are not required. With the towing power of two boats and no otter boards, a larger net may be worked than would otherwise be possible, or alternatively, the two boats can share increased fuel efficiency.[1]
As doors are not necessary, the gear arrangements are simplified, with the warps attaching directly to the wings of the net. Setting and hauling of the nets are carried out by one boat, while the other is only used for towing; usually each will take turns at these operations.[2]
Pair trawling is effective on all demersal species. In shallow waters, where the noise from a single vessel may scatter fish, two vessels operating a distance apart tend to herd fish into the path of the net. Catch per vessel often considerably exceeds that attainable through standard bottom trawling. Pair trawlers targeting cod off the coast of New England have reported average per vessel catches of three to six times that from single trawls.[1]
Because of the increased efficiency of pair trawling, vessels are able to tow their gears in mid-water at a faster speed to target species which are normally able to escape trawl nets, such as the European seabass. This has caused some controversy, due to the high level of marine mammal bycatch associated, leading to the British government introducing a ban on pair trawling for bass in UK territorial waters.[2]
^The South-west Territorial Waters (Prohibition of Pair Trawling) (Amendment) Order 2005 "Defra, UK - Fisheries - Sea fisheries - Conservation - Bass pair-trawl fishery". Archived from the original on 2007-02-06. Retrieved 2007-04-10.
Pairtrawling is a fishing activity carried out by two boats, with one towing each warp (the towing cables). As the mouth of the net is kept open by the...
10,000 hp (7.5 MW). Trawling can be carried out by one trawler or by two trawlers fishing cooperatively (pairtrawling). Trawling can be contrasted with...
Bottom trawling is trawling (towing a trawl, which is a fishing net) along the seafloor. It is also referred to as "dragging". The scientific community...
boat and spread by trawl doors, or it can be towed behind two boats (pairtrawling) which act as the spreading device. Midwater trawling catches pelagic...
fishing trawls. Trawling is a method of fishing that involves actively dragging or pulling a trawl through the water behind one or more trawlers. Trawls are...
"Keep clear of me." Fishing boats: "Keep clear of me; I am engaged in pairtrawling." Local time. (The first 2 digits denote hours; the last 2 denote minutes...
dragging across the seabed. Pelagic pair trawling – operate in a similar method to the demersal pairtrawl and again with lighter gear. Boat Builders...
species including the use of pole and line, trolling with multiple lines, trawling with large nets such as seine-netting, and traps or pots. Sustainability...
or shark. Bycatch is a large contributor to sea turtle deaths. Longline, trawl, and gillnet fishing are three types of fishing with the most sea turtle...
(velocity) in knots T Tango [ˈtaŋ.goʊ] "Keep clear of me; I am engaged in pairtrawling." Local time. (The first 2 digits denote hours; the last 2 denote minutes...
fishing trawl net and hauls the catch up a stern ramp. These can be either demersal (weighted bottom trawling); pelagic (mid-water trawling); or pair trawling...
fragments or coralline algae fragments. Beam trawling – the simplest method of bottom trawling. The mouth of the trawl net is held open by a solid metal beam...
African Deep-Sea Trawling Industry Association (SADSTIA) represents the trawler owners and operators active in the offshore demersal trawl fishery for hake...
otter trawl... and the internal combustion engine." Shrimp trawling can capture shrimp in huge volumes by dragging a net along the seafloor. Trawling was...
Ghana". Modern Ghana. Retrieved 4 September 2020. Online, Peace FM. "No Pair-Trawling In Ghana Says Fisheries Minister". m.peacefmonline.com. Retrieved 4...
3 September 2020. "The Southwest Territorial Waters (Prohibition of PairTrawling) Order 2004" (PDF). Office of Public Sector Information. 24 December...
a safety inspection. On 10 January 2007 Pere Charles was conducting PairTrawling with another vessel, Suzanna G While returning home in the midst of...
shelf and are caught by otter-trawling. The major threat faced by P. horkelii is overfishing. The fish is caught by trawling, beach seine and gillnet and...
leading inside the trap to the “parlour” where the lobsters are caught. Trawling is the main method used for the Norway lobster or Dublin Bay prawn, Nephrops...
conditions. They can work alone when midwater or bottom trawling, or two can work together as pair trawlers. Freezer trawlers – The majority of trawlers...
pairs in 1982, the penguin colony has grown to about 3000 birds in recent years. This is partly due to the prohibition of commercial pelagic trawling...
fishery is centred on Suruga Bay. The crabs are typically caught using small trawling nets. The population has decreased in number due to overfishing, forcing...
lightest, and fastest fully-functional micro-robots ever created. Bottom trawling is found to release 340 million tonnes of carbon dioxide (CO2) into the...
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