Cod-end drag as a function of catch size and towing speed

This paper reports on a series of flume tank experiments to measure the drag of a number of cod-ends over a range of towing speeds and catch sizes. It is shown that cod-end drag can be described as a function of the towing speed and the maximum frontal area of the cod-end. This suggests that the pre...

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Bibliographic Details
Published in:Fisheries research 2005-05, Vol.72 (2), p.163-171
Main Authors: O’Neill, F.G., Knudsen, L.H., Wileman, D.A., McKay, S.J.
Format: Article
Language:English
Subjects:
Catch size
Cod-end drag
Flume tank
Towing speed
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Summary:This paper reports on a series of flume tank experiments to measure the drag of a number of cod-ends over a range of towing speeds and catch sizes. It is shown that cod-end drag can be described as a function of the towing speed and the maximum frontal area of the cod-end. This suggests that the pressure drag of the catch is the predominant component of the cod-end drag. We also show that cod-end drag increases as solidity and the lateral cod-end motion increases.
ISSN:0165-7836
1872-6763
DOI:10.1016/j.fishres.2004.11.005