Abstract
A Boris 520 fish/prawn trawl was re-rigged with a separator panel which divided the net into two horizontal compartments with separate cod-ends. The prime function was to separate haddock and whiting from Nephrops and groundfish (cod, flatfish and skates) during trawling. Diving scientists, using a towed underwater vehicle, observed, measured and when necessary adjusted the gear to obtain the most favourable arrangement during normal towing conditions. Catch figures of whitefish and Nephrops in both cod-ends were examined using 50, 70 and 85 mm mesh separating panels set at different heights above the sea bed. The quality and separation of the catches in both cod-ends and the future possibilities of this type of gear are discussed in detail.
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