PROBLEM TO BE SOLVED: To provide a round haul net having a reduced cost, capable of reducing the equipment and the manpower, and capable of achieving an efficient operation, and further to provide an operation method by using the round haul net.SOLUTION: The reticulation 40 of a tunnel net part within a prescribed range at the hauling side is formed larger than the reticulation 40 of the tunnel net part at the fish-catching side except the range in the tunnel net part, and a pursing line 42 is arranged from the fish-catching side of a sinker side edge part 9 to the hauling side over the length shorter than the whole length of the sinker side edge part. The end part at the hauling side of the pursing line 42 is joined to the corresponding position of the sinker side edge part 9 corresponding to the end part at the hauling side.COPYRIGHT: (C)2003,JPO【課題】 旋網のコストを低廉化することができるとともに、装備や人員を削減し、効率的な操業を実現することのできる旋網およびこれを用いた操業方法を提供すること。【解決手段】 身網部のうち、大手側の所定範囲の身網部の網目40を、この範囲を除いた魚捕側の身網部の網目40よりも大きく形成し、パースライン42を、沈子側縁部9の魚捕側から大手側に向けて、この沈子側縁部9の全長よりも短い長さにわたって配設し、このパースライン42の大手側端部を、当該大手側端部に対応する前記沈子側縁部9の対応位置に接続したこと。
