Trawl net with reducing net cross=sections - is made up of one or more tapering groups and expanding sections

摘要

The trawl net has net cross-section which reduce the longitudinal direction. The trawl net (7) is made up of one or more groups (1, 11), each of which has a first section (11a) which tapers to an opening face and a second section (11b) which expands to an opening face with respect to the opening face of the first section. The expanding section (11b) has an external flow resistance which is reduced with respect to the other sections. The expanded section of the last group (22) connects with a section (11c) which passes to the steering arm (20).