8.0 2,050-2,500 4,975 4,313 2,261 1,961 8.5 2,500-3,000 . . . . 9.0 3,000-4,000 5,480 4,751 2,491 2,160 10.0 4,000-5,000 . . 32 . . 11.0 5,000+ . . . . Fishbuster Trawl Doors Features The first truly "universal" otterboard. Extremely effective both on bottom and midwater fishing conditions. Fine lines to maximize spread and reduce drag. Rugged construction and stress-relieved welds designed to withstand rough bottoms, midwater strains, and onboard handling. V-form design for stability. Lift-to-drag ratio in excess of 2 to 1 over low-aspect ratio otterboards. 33 Half-weight shoes available for midwater and semipelagic fishing. 34 Connecting and Angle of Attack When connecting towing wire and backstrops to the doors, we
This allows the main line to be retrieved even if it breaks. Figure. Demersal (bottom set) longline with anchor (a), buoy line (bl), buoys (b) and marker buoys (mb) with weight (w) and flag. Redrawn from Bjordal and Lokkeborg 1996. 2. Semipelagic (põhjalähedane õngejada) Three methods are employed. The most widely used method involves lines with buoys and buoylines of variable lengths (Fig. 2). Weights are used to keep the line from drifting from its midwater position The second method is the only "throwaway" gear, with a thin monofilament mainline attached to many floats. All floats are hauled before the line is hauled, resulting in irreparably tangled lines. Only the pollock fishery in Korea uses this. The third method is known as overhauling. Lines are set permanently and each day the line is hauled, fish removed, rebaited and redeployed simultaneously. Smallscale cod fishers off Newfoundland use this. Figure
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