vahega mitte üle 30 mm. · [RT I 2005, 28, 201 jõust. 27.05.2005] Triivõngejada Põhjaõngejada Põhjaõngejada Põhjaõngejada Triivõngejada taglastus Pöörleja Sööt Õngejada liin Õngekonks söödaga Toru Pöörleja Raskus 1. Demersal This is the most commonly used method for bottom fishing. Two systems have been developed, namely single and double lines. The single system is simple to operate and consists of one line with weights and buoys at either end, and weights at intervals along the main line which keep it on the seabed. The double or Spanish system is the same but it has a second, safety line. It is used in areas where strong currents and rough floors otherwise cause high gear loss. The safety line is
Ülemine paneel Küljepaneel Alumine paneel Tiivad Skväär Kere Kere Pära 10 11 12 The essential elements of twin rig trawl gear are set out in Figure 11. This gear is generally used for target species tight on the bottom, such as angler, flatfish and Nephrops. By towing two nets side by side the effective swept area, and hence catch, is increased. As with the single demersal trawl above, otter boards (a) provide the horizontal spreading forces and floats and groundropes the vertical forces. The obvious difference in rigging is the third wire or central warp (b), which runs from the vessel to the clump (c), a heavy weight which can consist of short lengths of chain cable shackled together or a custom made device (Fig. 12) designed to roll rather than be dragged along the bottom. Warp length/water depth ratios are similar to those
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