bottom pair trawl
a trawl towed by two boats at the same time, the distance between the boats ensuring the horizontal opening of the net

Dictionary of ichthyology. 2009.

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  • Bottom trawling — The Celtic Explorer, a research vessel engaged in bottom trawling …   Wikipedia

  • Pair trawling — are not required. By utilising the towing power of two boats, and as no otter boards are needed, a larger net may be worked than would otherwise be possible, or alternatively, the two boats can share increased fuel efficiencyref|sains.As doors… …   Wikipedia

  • midwater trawl — a net towed through the water column by one boat, the net being positioned above the bottom and below the surface. It may have otter doors that function to keep the net mouth open and depressor plates that function to make it fish deeper, or two… …   Dictionary of ichthyology

  • Scottish east coast fishery — The Scottish east coast fishery has been in existence for more than a thousand years, spanning the Viking period right up to the present day. A brief historyThe fishery has always been for both whitefish and herring. The Norsemen came to Scotland …   Wikipedia

  • Fishing trawler — For other types of trawlers, see Trawler (disambiguation). The Irish RSW tank trawler Brendelen[1] in Skagen harbour A fishing trawler (also called a dragger) is a commercial fishing vessel designed to operate fishing trawls. Traw …   Wikipedia

  • commercial fishing — Introduction  the taking of fish and other seafood and resources from oceans, rivers, and lakes for the purpose of marketing them.       Fishing is one of the oldest employments of humankind. Ancient heaps of discarded mollusk shells (shell… …   Universalium

  • Trawling — is a method of fishing that involves pulling a large fishing net through the water behind one or more boats. The net that is used for trawling is called a trawl.The boats that are used for trawling are called trawlers. Trawlers vary in size; from …   Wikipedia

  • conservation — conservational, adj. /kon seuhr vay sheuhn/, n. 1. the act of conserving; prevention of injury, decay, waste, or loss; preservation: conservation of wildlife; conservation of human rights. 2. official supervision of rivers, forests, and other… …   Universalium

  • Fisheries glossary — This is a glossary of terms used in fisheries, fisheries management and fisheries science. A * Abundance is a measure of how many fish are in a population or a fishing ground. See relative abundance and absolute abundance.* Acoustic survey a… …   Wikipedia

  • environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …   Universalium

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