Otter trawl with boom

              This fishing gear is similar to the bottom otter trawl, except that a pair of booms are added to the fishing boat.  The purpose of the booms is to increase the horizontal spreading of otter boards.  Twin booms are arranged, hinging outward from the middle of fishing boat to provide outboard towing point for the towing warps.

              The gear can be found in the inner Gulf of Thailand, from Trat to Chumporn province.  Most of the catches consist of shrimps.

              The operation of this gear is the same as for an ordinary otter-trawl, but a boom increases the spreading of otter boards.  Thus the warp ends through a ring that is attached to the tip of the boom during towing.  When setting and hauling, the towing warps are taken to the stern by a thin rope and the setting and hauling are done in the normal way.  The warps are released back to the ring at the tip of the boom when towing