| Abstract |
Otterboards are devices used for stabilising the trawl nets rigged with them and are also hydrodynamically dependant means of holding the net mouth open. Before the advent of otterboards, the net mouth was kept open by a rigid and self supporting structure, the resultant gear being known as beam trawl. Introduction of steam power to fishing vessel permitted faster and better controlled towing speed in comparison to the wind energy and this development opened up introduction of otterboards as spreading devices to replace the rigid beam. The paper is explaining the details about otterboards. |
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