The 'W' prawn-trawl with emphasised drag-force transfer to its centre line to reduce overall system drag.

ABSTRACT: For prawn trawling systems, drag reduction is a high priority as the trawling process is energy intensive. Large benefits have occurred through the use of multiple-net rigs and thin twine in the netting. An additional positive effect of these successful twine-area reduction strategies is the reduced amount of otter board area required to spread the trawl systems, which leads to further drag reduction. The present work investigated the potential of redirecting the drag-strain within a prawn trawl away from the wings and the otter boards to the centre line of the trawl, where top and bottom tongues have been installed, with an aim to minimise the loading/size of the otter boards required to spread the trawl. In the system containing the new 'W' trawl, the drag redirected to the centre-line t

SUBMITTER: Balash C 

PROVIDER: S-EPMC4353710 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature