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ChesMMAP Gear
ChesMMAP fishes with a 200x12cm, 4 seam, 3 bridle bottom trawl with a 5cm flat sweep (also referred to as "cookie sweep"). This means that the fishing circle of the net is comprised of 200 12cm braided polyethylene meshes. The forward-most panels of the body of the net are made up of 12cm meshes, tapering back to 6cm meshes in the main body and extension. The cover bag of the codend is made of double 12cm braided polyethylene with a 2.54cm knotless nylon liner inserted inside. The trawl doors used are Thyboron Type IV 44", each weighing 120kg in air.
ChesMMAP Trawl Gear full Design & Parameters |
We use three Simrad PX multisensors - one on each wingend and one on the center of the headrope. This allows us to measure the net width and headrope height in real time to assure the net is fishing properly. Each tow must fall within the acceptable ranges of performance in both of these areas in order to be counted as valid.