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"buoylines" - 1 õppematerjal

Õngepüük
22
ppt

Õngepüük

The safety line is unweighted and floats above the main line, attached at several points. 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,

Merendus → Kalapüügitehnika
27 allalaadimist


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