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Figure 1
Illustration of Shrimp Grid.
Copyright Crimond 2000
Figure 2
Illustration of Fish/Silver Hake grid.
Figure 3
By-catch path shown by red arrow
Target fish path shown by pink arrow
Figure 4
Offshore Grid
Copyright Crimond 2000
Figure 5
Removable Grid 1
Copyright Crimond 2000
Figure 6
Removable Grid 2
Copyright Crimond 2000
Figure 7
Adjustable bar spacing grid.
Front and Rear
Copyright Crimond 2000
Figure 8
Adjustable grid detailed view.
Copyright Crimond 2000
Figure 9
Adjustable Carbon Grid
Figure 10
Grader Grid in a Shrimp Trawl.
Figure 11
Wire Grid
Figure 12
Wire Grid Top Detail
Figure 13
Wire Grid Space Detail
Figure 14
Wire Grid Tensioner Detail
Figure 15
Grid comparison
Copyright Crimond 2000
Figure 16
Grid configuration
Copyright Crimond 2000
Figure 17
The effect of introducing rigid grids in the Northern Fishery. Northern (Offshore) Shrimp Fishery
Percent Groundfish By-catches (Total for all fishing areas)
Species 1991 (%) 1994 (%) 1994-91 Reduction
(%)
Cod 2.37 0.08 2.29 Plaice 0.82 0.33 0.48 Redfish 7.34 3.77 3.57 Turbot 4.73 1.48 3.25
TOTAL 15.26 5.61 9.65
Figure 18
Silver Hake fishery grid results.
1989 (%) 1994 (%) 1989-94 Savings (%)
Haddock 0.73 0.10 0.63
Cod 0.24 0.01 0.23
Pollock 2.33 0.10 2.23
Total Groundfish 3.30 0.21 3.09
Table 19
Estimated Bycatch Savings from Rigid Grids in the Silver Hake Fishery
