SGTCOD

SGTCOD

Study Group on Turned 90° Codend Selectivity, focusing on Baltic Cod Selectivity

 

 

SGTCODSGTCODFalseEOSG10/28/2008 9:30:00 AM12/30/2013 11:00:00 PM327Study Group on Turned 90° Codend Selectivity, focusing on Baltic Cod Selectivity

The Study Group on Turned 90˚ Codend Selectivity, focusing on Baltic Cod Selectivity (SGTCOD) has conducted a large number of theoretical and experimental studies, mostly on finding a best solution for Baltic Sea cod trawl fishery T90 and T0 codends.

SGTCOD was first planned to run for three years (2009-2011) but was extended to 2012 and then to 2013. The prolongation is connected with some vital changes of one of the group Chairs.

We have conducted a large number of studies both theoretical and experimental, and most of our sea investigations are carried out using German research vessels. For the Baltic Sea cod trawl fishery, our work concentrates mainly on finding a best solution for T90 and T0 (diamond) codends, but we do not neglect the second legal codend for Baltic cod fishing, i.e. Bacoma codend. For T90 codend we have studied effect of turning netting (from T0 to T90), number of meshes around (compared to T0 designs), twine construction (single/double, twine thickness), among others. The results are evaluated and conclusions are introduced into subsequent sea studies.

The group has had three meetings: Ancona, 2009 (Italy); Hirtshals, 2010 (Denmark); and Reykjavik, 2011 (Iceland). During the last two meetings, participants had the opportunity to visit a flume tank in Hirtshals (observation behavioral properties of T90 and T0 codend models) and a net factory and deep sea fishery trawler in Reykjavik which produce and use T90 trawl gears respectively.

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SGTCOD

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