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North Carolina Department of Environment Quality

NC Department of Environment and Natural Resources
Marine Fisheries - NC Bycatch Reduction Device

Marine Fisheries

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I. Modified Jones-Davis:

1. Description: The Modified Jones-Davis BRD is a variation to the alternative funnel construction method of the Jones-Davis BRD except the funnel is assembled by using depth-stretched and heat-set polyethylene webbing instead of the flaps formed from the extension webbing. In addition, no hoops are used to hold the BRD open. Minimum construction and installation requirements stated below.
Webbing extension: The webbing extension must be constructed from a single rectangular piece of 1 5/8 inch (4.1 cm) stretch mesh # 30 nylon with dimensions of 39 1/2 meshes by 150 meshes. A tube is formed from the extension webbing by sewing the 39 1/2 mesh sides together.

Funnel: The funnel must be constructed from two sections of 1 5/8 inch (4.1 cm) heat-set and depth-stretched polypropylene or polyethylene webbing. The two side sections must be rectangular in shape, 25 meshes on the leading edge by 21 meshes deep. The 25 mesh leading edge of each polyethylene webbing section must be sewn evenly two meshes in from the front of the extension webbing starting 25 meshes from the top center on each side. The 21 mesh edge must be sewn to the extension webbing on a 9 bar and 1 mesh angle in the top and bottom, forming a V-shape funnel.

Cutting the escape opening. The leading edge of the escape openings must be located within 18 inches (45.7 cm) of the posterior edge of the turtle excluder device (TED) grid. The area of the escape opening must total at least 635 in2 (4,097 cm2). Two escape openings, 6 meshes wide by 12 meshes deep, must be cut 4 meshes apart in the extension webbing, starting at the top center extension seam, 7 meshes back from the leading edge, and 30 meshes to the left and to the right (total of four openings). The four escape openings must be double-selvaged for strength. The four escape openings shall remain unobstructed at all times.

Cone fish deflector. The cone fish deflector is constructed of 2 pieces of 1 5/8 inch (4.1 cm) polypropylene or polyethylene webbing, 40 meshes wide by 20 meshes in length and cut on the bar on each side forming a triangle. Starting at the apex of the two triangles, the two pieces must be sewn together to form a cone of webbing. The apex of the cone fish deflector must be positioned within 12 inches (30.5 cm) of the posterior edge of the funnel.

11 inch (27.9 cm) cable hoop for cone deflector. A single hoop must be constructed of 5/16 inch (0.79 cm) or 3/8 inch (0.95 cm) cable 34 1/2 inches (87.6 cm) in length. The ends must be joined by a 3 inch (7.6 cm) piece of 3/8 inch (0.95 cm) aluminum pipe pressed together with a 1/4 inch (0.64 cm) die. The hoop must be inserted in the webbing cone, attached 10 meshes from the apex and laced all the way around with heavy twine.

Installation of the cone in the extension. The apex of the cone must be installed in the extension within 12 inches (30.5 cm) behind the back edge of the funnel and attached in four places. The midpoint of a piece of # 60 twine (or at least 4-mesh wide strip of # 21 or heavier webbing) 3 ft (1.22 m) in length must be attached to the apex of the cone. This piece of twine or webbing must be attached within 5 meshes of the aft edge of the funnel at the center of each of its sides. Two 12 inch (30.5 cm) pieces of # 60 (or heavier) twine must be attached to the top and bottom of the 11 inch (27.9 cm) cone hoop. The opposite ends of these two pieces of twine must be attached to the top and bottom center of the extension webbing to keep the cone from inverting into the funnel.

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N.C. Division of Marine Fisheries • 3441 Arendell Street • Morehead City, NC 28557 • 252-726-7021 or 800-682-2632

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