rope trawl
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spaghetti trawl — rope trawl (the netting of the front part of a four seam trawl made of plaited warps running parallel for a few meters. The aim is to save energy required for towing by decreasing the resistance of the gear) … Dictionary of ichthyology
trawl — 1) a bag shaped net towed behind a ship either along the sea floor or in midwater, having a buoyed head rope and a weighted foot rope to keep the net mouth open. It may be towed by one or two ships; 2) in Newfoundland … Dictionary of ichthyology
rock-hopper trawl — a demersal otter trawl with rubber disks attached to the groundrope and to a second rope off centre. When the trawl encounters an obstruction on the sea bed, the groundrope and the second rope wind around each other and accumulate tension,… … Dictionary of ichthyology
outrigger trawl — beam trawl (a trawl with short wings and a head rope attached to a metal or wooden beam, 10 m or more long, which keeps the net open horizontally and scrapes the bottom to scoop or startle fish into the net. Metal frames on each end of the beam… … Dictionary of ichthyology
head rope — 1) the rope along the upper margin of a net 2) the length of rope or wire in a trawl to which the top wings and cover netting are attache … Dictionary of ichthyology
beam trawl — a trawl with short wings and a head rope attached to a metal or wooden beam 4 12 m long. The beam keeps the net open horizontally while metal frames on each end of the beam keep the net open vertically. The beam has metal runners to support it… … Dictionary of ichthyology
bottom trawl — a net shaped like a bag dragged along the sea floor. The lower edge of the net has a thick ground rope or bobbins to prevent net damage and is heavily ballasted. Some trawls are low opening to capture demersal species, others are high opening to… … Dictionary of ichthyology
breast line — a wire rope running along the forward edges of the side panels of a net or along the forward edge of the side rope in a rope trawl … Dictionary of ichthyology
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
Bottom trawling — The Celtic Explorer, a research vessel engaged in bottom trawling … Wikipedia
