Calculated and Measured Trawl Drag Comparison

Mukundan M.; Shahul Hameed M.

doi:10.56093/ft.v32i1.23869

Authors

Mukundan M. Department of Industrial Fisheries Cochin University of Science and Technology Cochin
Shahul Hameed M. Department of Industrial Fisheries Cochin University of Science and Technology Cochin

https://doi.org/10.56093/ft.v32i1.23869

Keywords:

Trawl drag estimation

Abstract

Drags of a 2.06 m model net and 31 and 17 m two panel demersal trawls were estimated using two methods of calculation and compared with measured tension at towing poiAt. Calculated drag with the first method (Kowalski & Giannotti 1974 a, b) were 0.68, 2080 av.d 557 kgf as against the measured tension of 0.62, 1634 and 482 kgf, respectively for 2.06, 31 and 17 m nets. Using the second method (Dickson, 1979) results obtained appeared to be unreliable indicating need for further refinement