RESUlTS OF COMPARATIVE FISHING TRIALS WITH RECTANGULAR FlAT AND RECTANGULAR CURVED OTTER BOARDS

Abstract

Rectangular flat and rectangular curved otterboards were tested
under identical conditions and their relative efficiency ascertained
on the basis of catch landed by 137m four-seam shrimp otter trawl.
During the study, significant increase was observed in the catch when
the gear was rigged with curved otterboards. The horizontal spread
berween rectangular otterboards was found to be more by 13% ~nd
they also offered about 10% more towing resistance than the convent~
ional boards. The otter boards were tested under trawling speed of
2 knots per hour.