Cooperative Research Twin Trawl Sweep Comparison Study

Metadata Updated: April 21, 2022

The "Twin-Trawl Sweep Efficiency Study" was intended to compare the sweep efficiency and selectivity of the NEFSC standardized bottom trawl to that of a standardized trawl that differed only in sweep configuration. The experimental trawl was equipped with a small cookie sweep while the standardized trawl has a larger rock-hopper sweep. This work was done on a commercial twin-trawler that was capable of towing both nets side-by-side simultaneously. This work was undertaken in Southern New England waters in depths (30-50 meters) assumed to have high flounder and skate densities. Ninety two valid paired tows were accomplished. Efficiency and size selectivity for the two configurations were compared.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Date March 29, 2022
Metadata Created Date November 12, 2020
Metadata Updated Date April 21, 2022
Reference Date(s) (publication)
Frequency Of Update asNeeded

Additional Metadata

Resource Type Dataset
Metadata Date March 29, 2022
Metadata Created Date November 12, 2020
Metadata Updated Date April 21, 2022
Reference Date(s) (publication)
Responsible Party (Point of Contact, Custodian)
Contact Email
Guid gov.noaa.nmfs.inport:27385
Access Constraints Cite As: Northeast Fisheries Science Center, [Date of Access]: Cooperative Research Twin Trawl Sweep Comparison Study [Data Date Range],, Access Constraints: User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. | Use Constraints: Acknowledgement of NOAA/NMFS/NEFSC, as the source from which these data were obtained in any publications and/or other representations of these, data is suggested.
Bbox East Long -66.7082
Bbox North Lat 43.465033
Bbox South Lat 39.976988
Bbox West Long -71.782887
Coupled Resource
Frequency Of Update asNeeded
Harvest Object Id be21beaa-9401-46dc-93da-1aee485dd58e
Harvest Source Id 523189fa-8edc-48e1-9ec5-f571e7dd923c
Harvest Source Title NMFS NEFSC
Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
Metadata Language eng
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-71.782887, 39.976988], [-66.7082, 39.976988], [-66.7082, 43.465033], [-71.782887, 43.465033], [-71.782887, 39.976988]]]}
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2008
Temporal Extent End 2009

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