Cooperative Research Twin Trawl Sweep Comparison Study
Data Set (DS) | Northeast Fisheries Science Center (NEFSC)GUID: gov.noaa.nmfs.inport:27385 | Updated: March 4, 2026 | Published / External
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Summary
Short Citation
Northeast Fisheries Science Center, 2026: Cooperative Research Twin Trawl Sweep Comparison Study, https://www.fisheries.noaa.gov/inport/item/27385.
Full Citation Examples
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.
Data Access & Downloads
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277.1KB
The compressed file contains the following comma delimited files:
27385_UNION_FSCS_SVCAT.csv
27385_UNION_FSCS_SVLEN.csv
27385_UNION_FSCS_SVSTA.csv
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Compressed Zipped Folder contains Support Table Entities for this data set
SVDBS_SupportTables.zip contains Entities
- SVDBS_CLOUD.csv
- SVDBS_MATURITY_CODES.csv
- SVDBS_SEX_CODES.csv
- SVDBS_SVGEAR.csv
- SVDBS_SVMSTRATA.csv
- SVDBS_SVVESSEL.csv
- SVDBS_WEATHER.csv
- SVDBS_XBT.csv
Data extracted on 8/8/2017
User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy.
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.
Child Items
| Type | Title |
|---|---|
| Entity | Table: CLOUD |
| Entity | Table: MATURITY_CODES |
| Entity | Table: SEX_CODES |
| Entity | Table: SVGEAR |
| Entity | Table: SVMSTRATA |
| Entity | Table: SVVESSEL |
| Entity | Table: UNION_FSCS_SVCAT |
| Entity | Table: UNION_FSCS_SVLEN |
| Entity | Table: UNION_FSCS_SVSTA |
| Entity | Table: WEATHER |
| Entity | Table: XBT |
Contact Information
Point of Contact
Catherine Foley
catherine.foley@noaa.gov
Metadata Contact
Catherine Foley
catherine.foley@noaa.gov
Extents
-71.782887° W,
-66.7082° E,
43.465033° N,
39.976988° S
2008 - 2009
The twin trawl sweep comparison study was conducted during the fall of 2008 and winter of 2009.
Item Identification
| Title: | Cooperative Research Twin Trawl Sweep Comparison Study |
|---|---|
| Short Name: | Twin Trawl Sweep Comparison Study |
| Status: | Completed |
| Abstract: |
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. |
Keywords
Theme Keywords
| Thesaurus | Keyword |
|---|---|
| UNCONTROLLED | |
| None | cookie sweep |
| None | cooperative research |
| None | rock hopper sweep |
| None | size selectivity |
| None | sweep efficiency |
| None | twin trawl |
Temporal Keywords
| Thesaurus | Keyword |
|---|---|
| UNCONTROLLED | |
| None | 2008 |
| None | 2009 |
Spatial Keywords
| Thesaurus | Keyword |
|---|---|
| UNCONTROLLED | |
| None | Northwest Atlantic |
| None | Southern New England |
Stratum Keywords
| Thesaurus | Keyword |
|---|---|
| UNCONTROLLED | |
| None | benthic |
| None | demersal |
| None | pelagic |
Physical Location
| Organization: | NEFSC Woods Hole Lab |
|---|---|
| City: | Woods Hole |
| State/Province: | MA |
| Country: | USA |
Data Set Information
| Data Set Scope Code: | Data Set |
|---|---|
| Data Set Type: | Oracle Database |
| Maintenance Frequency: | As Needed |
| Data Presentation Form: | Table (digital) |
Support Roles
Data Steward
| Date Effective From: | 2025 |
|---|---|
| Date Effective To: | |
| Contact (Person): | Foley, Catherine |
| Address: |
166 Water Street Woods Hole, MA 02543 |
| Email Address: | catherine.foley@noaa.gov |
Distributor
| Date Effective From: | 2010 |
|---|---|
| Date Effective To: | |
| Contact (Organization): | Northeast Fisheries Science Center (NEFSC) |
| Address: |
166 Water Street Woods Hole, MA 02543-1026 USA |
| ROR: | https://ror.org/02nc0ck44 |
| Phone: | (508)495-2000 |
| URL: | https://www.fisheries.noaa.gov/about/northeast-fisheries-science-center |
| Business Hours: | 8:00 a.m. to 4:30 p.m. Monday - Friday |
Metadata Contact
| Date Effective From: | 2025 |
|---|---|
| Date Effective To: | |
| Contact (Person): | Foley, Catherine |
| Address: |
166 Water Street Woods Hole, MA 02543 |
| Email Address: | catherine.foley@noaa.gov |
Originator
| Date Effective From: | 2010 |
|---|---|
| Date Effective To: | |
| Contact (Organization): | Northeast Fisheries Science Center (NEFSC) |
| Address: |
166 Water Street Woods Hole, MA 02543-1026 USA |
| ROR: | https://ror.org/02nc0ck44 |
| Phone: | (508)495-2000 |
| URL: | https://www.fisheries.noaa.gov/about/northeast-fisheries-science-center |
| Business Hours: | 8:00 a.m. to 4:30 p.m. Monday - Friday |
Point of Contact
| Date Effective From: | 2025 |
|---|---|
| Date Effective To: | |
| Contact (Person): | Foley, Catherine |
| Address: |
166 Water Street Woods Hole, MA 02543 |
| Email Address: | catherine.foley@noaa.gov |
Extents
Extent Group 1
Extent Group 1 / Geographic Area 1
| W° Bound: | -71.782887 | |
|---|---|---|
| E° Bound: | -66.7082 | |
| N° Bound: | 43.465033 | |
| S° Bound: | 39.976988 |
Extent Group 1 / Time Frame 1
| Time Frame Type: | Range |
|---|---|
| Start: | 2008 |
| End: | 2009 |
| Description: |
The twin trawl sweep comparison study was conducted during the fall of 2008 and winter of 2009. |
Access Information
| Security Class: | Unclassified |
|---|---|
| Data Access Policy: |
Available to qualified researchers. |
| Data Access Procedure: |
Please contact Point of Contact via email. |
| Data 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. |
| Data 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. |
Distribution Information
Distribution 1
| Download URL: | https://storage.googleapis.com/nmfs_odp_nefsc/PARR/PEMAD/ESB/27385/27385_CooperativeResearchTwinTrawlSweepComparisonStudy.zip |
|---|---|
| Distributor: | |
| File Name: | 27385_CooperativeResearchTwinTrawlSweepComparisonStudy.zip |
| Description: |
The compressed file contains the following comma delimited files: 27385_UNION_FSCS_SVCAT.csv 27385_UNION_FSCS_SVLEN.csv 27385_UNION_FSCS_SVSTA.csv |
| File Date/Time: | 2019-05-31 00:00:00 |
| File Type (Deprecated): | Zip |
| File Size: | 277.1KB |
| Compression: | Zip |
Distribution 2
| Download URL: | ftp://ftp.nefsc.noaa.gov/pub/dropoff/PARR/PEMAD/ESB/SVDBS |
|---|---|
| Distributor: | |
| Description: |
Compressed Zipped Folder contains Support Table Entities for this data set SVDBS_SupportTables.zip contains Entities - SVDBS_CLOUD.csv - SVDBS_MATURITY_CODES.csv - SVDBS_SEX_CODES.csv - SVDBS_SVGEAR.csv - SVDBS_SVMSTRATA.csv - SVDBS_SVVESSEL.csv - SVDBS_WEATHER.csv - SVDBS_XBT.csv
Data extracted on 8/8/2017 |
Technical Environment
| Description: |
Oracle database on Centralized Database Management System |
|---|
Data Quality
| Quality Control Procedures Employed: |
Data validation during data collection using FSCS 1.6, Data auditing post-survey by established auditing routines, Data validation during database load |
|---|
Data Management
| Have Resources for Management of these Data Been Identified?: | Yes |
|---|---|
| Approximate Percentage of Budget for these Data Devoted to Data Management: | Unknown |
| Do these Data Comply with the Data Access Directive?: | Yes |
| Is Access to the Data Limited Based on an Approved Waiver?: | No |
| Approximate Delay Between Data Collection and Dissemination: | not applicable |
| Actual or Planned Long-Term Data Archive Location: | To Be Determined |
| If To Be Determined, Unable to Archive, or No Archiving Intended, Explain: |
Data will be archived once a solution for archiving relational data sets is defined |
| Approximate Delay Between Data Collection and Archiving: | Unknown |
| How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?: |
Archival of source data preserving unaltered collected data, Scheduled backups, Remote storage backups, Password protection |
Lineage
| Lineage Statement: |
Vessel sensor data were collected electronically using SCS. Catch and biological data were collected electronically using FSCS 1.6. At the completion of the cruise, a database copy was inserted into the shoreside database. |
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Child Items
Rubric scores updated every 15m
|
Type | Title |
|---|---|---|
| Entity | Table: CLOUD | |
| Entity | Table: MATURITY_CODES | |
| Entity | Table: SEX_CODES | |
| Entity | Table: SVGEAR | |
| Entity | Table: SVMSTRATA | |
| Entity | Table: SVVESSEL | |
| Entity | Table: UNION_FSCS_SVCAT | |
| Entity | Table: UNION_FSCS_SVLEN | |
| Entity | Table: UNION_FSCS_SVSTA | |
| Entity | Table: WEATHER | |
| Entity | Table: XBT |
Catalog Details
| Catalog Item ID: | 27385 |
|---|---|
| GUID: | gov.noaa.nmfs.inport:27385 |
| Metadata Record Created By: | Patricia L Jones |
| Metadata Record Created: | 2015-09-23 10:22+0000 |
| Metadata Record Last Modified By: | SysAdmin InPortAdmin |
| Metadata Record Last Modified: | 2026-03-04 19:17+0000 |
| Metadata Record Published: | 2019-05-31 |
| Owner Org: | NEFSC |
| Metadata Publication Status: | Published Externally |
| Do Not Publish?: | N |
| Metadata Last Review Date: | 2019-05-31 |
| Metadata Review Frequency: | 1 Year |
| Metadata Next Review Date: | 2020-05-31 |