Acta Ichthyologica et Piscatoria 3(1): 139-147, doi: 10.3750/AIP1973.03.1.12
Changes in mesh sizes of cod-end netting of trawls used by the trawlers type B-18 during their exploitation
expand article infoJ. Świniarski, W. Małolepszy

Corresponding author: J. Świniarski

© J. Świniarski, W. Małolepszy.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation: Świniarski J, Małolepszy W (1973) Changes in mesh sizes of cod-end netting of trawls used by the trawlers type B-18 during their exploitation. Acta Ichthyologica et Piscatoria 3(1): 139-147. https://doi.org/10.3750/AIP1973.03.1.12
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Abstract
The present paper describes studies on changes in mesh sizes of the cod-end netting of trawls used by the B-18 type freezing trawlers belonging to the Deep Sea Fisheries Company (PPDiUR) "Odra" in Świnoujście. Measurements of the mesh sizes were taken from 6 cod-ends of bottom and pelagic trawlers, using a Polish Longitudinal-force mesh gauge. It was shown that a significant increase of .mesh sizes in the trawl cod-ends occurred during the trawl exploitation. Meshes of the upper part of trawls subjected to the greater deformations. Detailed results of investigations are given in Table 2 and 3.