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Instrument Information

Identifier: Nordic 264 Rope Trawl
Instrument / Gear: Gear
Instrument Type: Trawl Net
Description:

The trawl mesh is constructed of nylon cord and has an overall length of 93.45 meters plus an additional 8.5 meters for the sampling codend, which has a liner with a mesh size of 8 millimeters sewn in. The working mouth opening has been measured as 600 m² at a towing speed of 3.5 knots.The rigging for the Nordic 264 rope trawl is comprised of an upper and lower leg per side each 70 meters in length. When connected to the door legs, the entire bridle is almost 80 meters in length. The lower bridle has an additional chain set-back to optimize the efficiency of the trawl in regards to the projected towing depth. Removable clump weights of 91 kilograms are connected at the forward section of the set-back chain by means of a G-hook/flat-link connection, in order to maximize vertical spread of the trawl. The trawl doors are 3.0 square meters in area and have a dry weight of 523 kilograms (1,150 lbs.). These hollow doors are filled with a non-compressible syntactic foam which gives them a weight in water of 135 kg.

Record Created: April 23, 2025 3:06 PM UTC by brittany.schwartzkopf@noaa.gov
Record Last Modified: April 23, 2025 3:06 PM UTC by brittany.schwartzkopf@noaa.gov
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