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Abstract
Inheriting the offshore purse seine samples investigated in Khanh Hoa province and the purse seine samples used in the provinces Binh Dinh, Binh Thuan, where the purse seine fishing industry developed early, the research has analyzed the current limitations of the net in Khanh Hoa, then necessary improvements were made to improve the fishing performance, in accordance with the characteristics of the fishing grounds and type of fish of the local purse seine After the improvemenst, the improved seine net had the following basic parameters: The working length of the net was 1,120m, an increase of 385m compared to the current net (concentrated in the body); The working height of the net for the punt, body and wings was 64m, 140m and 67.2m, respectively; Purse-wire had specifications: ϕ40, PP (covered with lead).