Garner, J. 3rd ed. Starting with the development of trawl gear, the book goes on to discuss trawl nets in detail, conventional trawl net assembly and rigging practices. It then deals with developments away from conventional trawl gear design, the design and efficiency of otterboards, gear for stern trawlers and operational procedures. Includes further reference to ground trawling with two vessels, trawl net tendencies, with more information on otterboard designs and specifications. There is also a section on main clips, links and other ironware used in trawling, a list of technical terms used in trawling, and a series of photos of trawling operations.
Passive methods cover netting and long lining.
The briefing concludes with case studies relating to the Collision Regulations. Seafood Business Magazine. Standards, and more precise specifications and tolerances are your keys to effective purchasing. Standards are defined as something established for use as a rule or basis of comparison in measuring or judging quality. Specifications are detailed descriptions of the parts of a whole, and tolerances are the variables allowed between the maximum and minimum requirements of a product.