The net, among the fishing gear occupies the prime position in catching fish commercially for mass production. Among the net, trawl net chase the fish to be caught, as such, has established itself as the most important gear throughout the world oceans. With these objectives, the book in its nineteen chapters, not only, outlined the features of the trawl net, but described the operational characteristics of the net in different operating conditions.. Starting with the principles of the design and construction of the net, the evolution of various trawl fishing gears, tested on trials over time series, from the conventional two seam trawl to four and six seam trawls with overhang, bulged belly, long wing, large mesh, tested for operation at different depths were elaborately described in different chapters of the book.
The incorporation of By catch Reduction Devices, a new innovation adopted as conservation measures together with the common by catch species encountered in Indian Seas have also find place in the book. The engineering performance of trawl net in operation towards perfection was elaborately discussed in flume tank test. The reaction and behavior of fish school towards approaching trawl was vividly observed under water and narrated in the book. The possibility of introducing electrical trawl in sea fishing with technical back-up was discussed in details. The construction details and diagrams of different types of trawl presented in the book will be useful to the students, teachers, net-makers and net manufacturers.
ABOUT THE AUTHOR K P Biswas
K.P. Biswas, M.Sc., Ph.D., D.F.Sc. (Bom), Fisheries (L-I), Principal, Fisheries Training Institute, Government of Orissa, part time lecturer in fisheries college, Orissa University of Agriculture and Technology, Manager fisheries Orissa Maritime and Chilka Area Development Corporation, Bhubaneswar, Director of Fisheries, Adnaman and Nicobar Island, Visiting Professor, University of Fisheries and Animal Sciences, Govt. of West Bengal and at present as Visiting Professor of Marine Science Department , Calcutta University has been associated with fish and fisheries science and its development for more than 46 years. He has specialized in electro fisheries, sea fishing, fish breeding and industrial fisheries and has published 125 research papers, review papers, and articles on fish and fisheries, besides publishing seven book in the field of fisheries. The author has worked as a member of the Fact Finding Committee of Chilka Lake Fisheries, appointed by the Hon'ble High court of Orissa and also as a member of the Expert Committee of Government of Orissa on the environmental impact of trawl fishery on the coastal ecology and extuaries with special reference to migration and nesting of Olive Redley turtles in Orissa coast. He is now actively engaged as a Fellow Member and Vice President of Zoological Society, Kolkata, Fellow Member of Indian Association of Biological Sciences life Member of Indian Science Congress Association, Indian Science News Assocation, Bangiya Bignan Parisad, Centre for Applied Science and Technology and published about fifty articles and research papers on fisheries and aquatic environment and marine ecology between 1993 to 2003.
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