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Northeast Fisheries Science Center Reference Document 02-15

Report of the Workshop on Trawl Warp Effects on Fishing Gear Performance, Marine Biological Laboratory, Woods Hole, Massachusetts, October 2-3, 2002

Northeast Fisheries Science Center
National Marine Fisheries Serv., Woods Hole Lab., 166 Water St., Woods Hole, MA 02543

Web version posted October 25, 2002

Citation: [Northeast Fisheries Science Center.] 2002. Report of the Workshop on Trawl Warp Effects on Fishing Gear Performance, Marine Biological Laboratory, Woods Hole, Massachusetts, October 2-3, 2002. Northeast Fish. Sci. Cent. Ref. Doc. 02-15; 80 p.

Information Quality Act Compliance: In accordance with section 515 of Public Law 106-554, the Northeast Fisheries Science Center completed both technical and policy reviews for this report. These predissemination reviews are on file at the NEFSC Editorial Office.

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Contents
Main Document (contents detailed below):
Workshop, First Day, 9:00 AM - 12:30 PM, 2 October (Whitman Auditorium)
 

Presentation by Dr. DeAlteris (Factors Affecting Performance of Survey Bottom Trawl)

  Summary of Discussion on: Factors Affecting Performance of Survey Bottom Trawl
Workshop, First Day, 2:00 PM - 6:00 PM, 2 October (Whitman Auditorium)
  Presentation by Dr. Brown (Description of Protocols Used in Albatross IV Trawl Warp Experiments)
  Presentation by Ms. Hendrickson (Description of Sensor Data from Albatross IV Experiments)
  Summary of Discussion on: Description of Protocols Used in Albatross IV Trawl Warp Experiments and Description of Sensor Data from Albatross IV Experiments
  Presentation by Mr. Milliken (Overview of Videotape Data Collected during Albatross IV Experiments)
  Summary of Discussion on: Video Evaluation of Warp Offset Experiments
  Presentation by Dr. He (Videotape of Trawl Warp Offset Trials of a Model 'Yankee 41' Trawl Conducted at the Flume Tank Facility in Newfoundland
Workshop, Second Day, 9:00 AM - 12:45 PM, 3 October (Lillie Auditorium)
  Presentation by Mr. Stommel (Fishermen's Observations during Albatross IV Experiments)
  Summary of Discussion on: Fishermen's Observations during Albatross IV Experiments
  Summary of Discussion on: Trawl Survey Issues
  Presentation by Dr. Fogarty (Design and Sample Size Considerations for Trawl Warp Experiments)
  Summary of Discussion on: Design and Sample Size Considerations for Trawl Warp Experiments
Workshop, Second Day, 2:30 PM - 6:00 PM, 3 October (Lillie Auditorium)
  Summary of Discussion on: Trawl Survey Issues and Development of Workshop Consensus Statements
  Workshop Consensus Statements
  Findings and Recommendations of the Workshop
  Completion of the Workshop and Concluding Remarks
Appendices
Appendix 1. Workshop Agenda
Appendix 2. Behaviors to Benefit the Group
Appendix 3. Trawl Warp Workshop Participants
Appendix 4. PowerPoint Presentation given by Wendy Gabriel
Appendix 5. PowerPoint Presentation given by Fred Serchuk
Appendix 6. Trawl Warp Offset and Survey Stations at Different Amounts of Wire Out
Appendix 7. NEFSC 36 Yankee Net Wire Out to Depth Scope
Appendix 8. Cumulative percentage of catches of cod, haddock and yellowtail flounder in relation to water depth in NEFSC 2001 autumn and 2002 spring bottom trawl surveys. Also indicated is the trawl warp offset associated with the water depths sampled
Appendix 9. Some simple geometry. How much does the front profile of the net change with offsets (extreme proportional change)?
Appendix 10. Specifications for Construction of NEFSC Standard #36 Bottom Trawl Survey Trawl
Appendix 11. Email comments to the Trawl Warp Workshop by Gary Loverich
Appendix 12. PowerPoint Presentation given by Joe DeAlteris
Appendix 13. Cruise Announcement and Cruse Report Results, NMFS Vessel R/V John N. Cobb
Appendix 14. Chapter Excerpt from Book by V.P. Kondratev (Modeling Commercial Fishing Gear by the Method of Analog Mechanisms)
Appendix 15. Fax Received from Mid-Atlantic Fishery Management Council
Appendix 16. PowerPoint Presentation given by Russ Brown
Appendix 17. PowerPoint Presentation given by Lisa Hendrickson
Appendix 18. PowerPoint Presentation given by Mike Fogarty
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