PUMA
Istituto di Scienze Marine     
Fiorentini L., Cosimi G., Leonori I., Sala A., Palumbo V. Confronto fra le caratteristiche idrodinamiche di alcune reti a strascico di tipo italiano. In: Biologia Marina Mediterranea, vol. 5 (3) pp. 800 - 812. Società Italiana di Biologia Marina, 1998.
 
 
Abstract
(English)
Three bottom trawls of Italian design, one traditional (T3) and two experimental (7'87 and T88), were tested at sea by measuring the principal behavioural parameters. A total of 30 hauls were made at différent depths. In all the tem made, the door spread measured on the three trawls resulted practically equivalent. On the contrwy the horizontal opening of the T88 trawl was signifìcantly greater than that of the T87 trawl; the T3 trawl showed the smallest horizontal opening. The T3 trawl had also the lowest vertical opening, while the T87 and T88 trawls showed Ama the same value for this parameter mainly when the horizontal opening reach high values. Although the increase in the vertical and horizontal opening, botti the T87 and the T88 trawls dtd noi show a correspondent increase in the towing loads.
Subject bottom-trawls
gear-research
fishing-technology
gear-efficiency


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