TWIN TRAWLING FOR SHRIMP WITH DUMMY DOOR

Abstract

Twin trawling; a new concept in shrimp trawling is described
in this paper. lt essentially involves towing of two trawls
of equal size connected in sequence at the inner head and
foot rope legs and using a pair of outer otter boards and
central neutral door or dummy door with triple bridles and
single tow warp. A comparative study with conventional stern
trawling using a standard 13.7 m. four seam shrimp trawl and
two 6 8 m. standard four seam trawls as twin-•1g has shown
considerable reduction in Lle utilizat.un cf 1--ower (20 %) with
better eft!ciency in shrimp fishing.