대형선망어업의 생산력 재편과 경영 개선 과제

김대영(Dae-Young KIM) 한국수산해양교육학회 2009 水産海洋敎育硏究 Vol.21 No.3

The aims of this study are to examine urgent problems for reorganization into future-proof large purse seine fisheries in order to positively cope with rapidly changing domestic and foreign fisheries circumstances. First, this paper provides current situations of the large purse seine fisheries. The current situations of it are composed of fisheries influence such as vessel number, vessel power, and fisher number, use of resource and fishing places, and changes in products and sales of species caught by the large purse seine. Secondly, this paper reviews current problems of the large purse seine fisheries including cost reduction and increase of value added. Thirdly, this paper suggests basic development direction and countermeasures for strengthening competitiveness of the large purse seine fisheries. In conclusion, urgent problems of the larger purse seine fisheries can be summarized as inefficiency of distribution structures and retarded landing system and facilities as well as the worse of profitability according to shrink of fishing places, reduction of products, lack of workers, and increase in oil price. To solve the urgent problems, the large purse seine fisheries should be changed into an industry with low cost and high efficiency, and also need to introduce of new production system, strengthen autonomous management of natural resource, and increase in value added to products.

대형선망어업의 주요 목표종의 어장 변동

이종희 ( Jong Hee Lee ),이재봉 ( Jae Bong Lee ),장창익 ( Chang Ik Zhang ),강수경 ( Su Kyung Kang ),최영민 ( Young Min Choi ),이동우 ( Dong Woo Lee ) 한국어업기술학회 2012 수산해양기술연구 Vol.48 No.2

Korean large purse seine fishery catches chub mackerel, sardine, jack mackerel, Spanish mackerel, etc. which are mainly pelagic fish species. The proportion of chub mackerel was 60% over in Korean large purse seine fishery. Sea surface temperature (SST) increased 0.0253°C per year and total rising rate was 0.759°C from 1980 to 2009 in the southern sea of Korea, where is mainly fishing grounds of Korean large purse seine. It was that p<0.01 level was statistically significant. It is northward movement that the center of fishing grounds of chub mackerel by Korean large purse seine fishery moved 4.57km/yr. It was rapidly northward movement about 7.1km/yr, 8.13km/yr to move Spanish mackerel and bluefin tuna fishing grounds. However, the fishing grounds of jack mackerel were moved further south in the 2000s than the 1980s. Catch of tunas and bluefin tuna consistently increased in Korean waters. There was a significantly positive correlation between SST and catch of bluefin tuna in the fishing grounds of Korean waters.

대형선망어업의 축소 동향과 경영대응 방향

김대영 ( Dae-young Kim ) 한국수산경영학회 2019 수산경영론집 Vol.50 No.4

This paper examines the trend of restructuring and direction of management response in the Large Purse Seine Fishery. The large-scale fishing industry is one of the most popular fishing areas in the coastal area, and it has been developed by providing exclusive supplies of many types of catchy fish, such as mackerel and horse mackerel through physical productivity in fleet operations. However, the Large Purse Seine Fishery has been declining in profitability due to the deterioration of the business environment since 2000. It is at a crossroads whether it will disappear or regenerate as it is. The Large Purse Seine Fishery's current problems are: firstly, the continued deterioration of the fishery business balance and worsening labor problems, secondly, insufficient freshness management and quality control after landing, and thirdly, import competition. The fourth is the intensification of the market competition, which is the evolution of fishing variability and the increase in the proportion of small fish. The fifth is the reduction of the operating fishing ground due to the suspension of mutual fishing in Korea and Japan. To address these problems and suggest management response directions for the survival of large-scale fishing businesses is as follows. First, a sustainable production system should be established through strengthening resource management and promoting international fisheries cooperation. Second, the profitability of fishing management should be improved by introducing a low-cost supplier system and securing a stable labor force. Third, we should improve the leading and quality control of catch, improve the high value-added value of catch through brand development, and secure competitive advantage with imported produce. Finally, the government should establish a cooperative system among private sector, government, and research institutes to push ahead with these tasks and strengthen the competitiveness of the front and rear industries.

바이오경제모형을 이용한 최적 생산량 분석: 수산업을 중심으로

남종오 ( Jong Oh Nam ),최종두 ( Jong Do Choi ),조정희 ( Jung Hee Cho ),이정삼 ( Jung Sam Lee ) 한국환경경제학회 한국자원경제학회 2010 자원·환경경제연구 Vol.19 No.4

본 논문은 이산바이오경제모형을 이용하여 자유입어와 단독소유상황 하에서 지속가능한 자원을 유지하고, 경제적 이윤 극대화를 달성할 수 있는 최적 생산량을 추정하였다. 특히, 본 연구에서는 로지스틱 성장함수, 콥-더글러스 생산함수, 수산물에 대한 비용 및 이윤함수들이 사용되었으며, 대형선망어업에서 주로 어획되는 고등어와 전갱이 자원이 분석대상으로 이용되었고, 관련 모형과 자료를 통하여 각 어종의 최적 생산과 어획노력을 분석하였다. 분석결과에 의하면 단독소유의 생태적 균형 하에서 대체적으로 고등어의 최적 생산량은 17만 2,512톤, 전갱이의 최적 생산량은 1만 6,937톤으로 추정되었다. 아울러 동일한 상황을 가정한 상태에서 최적 어획노력량의 경우 고등어는 8,508 양망횟수, 전갱이는 4,915 양망횟수로 추정되었다. 결론적으로 현행 대형선망어업보다 더 높은 순현재가치 창출을 위한 최적 관리(경영)는 어획노력량 수준을 다소 감소시켜 어업자원을 최적 수준으로 증가시켜야 한다는 것이다. This paper estimates optimal production of fish stock using discrete time bio-economic model to make zero profits or to maximize economic profits with maintaining sustainable resource levels under an open access and a sole owner. Particularly, this study generates optimal yields and efforts of large purse seine fisheries which catch mackerel and jack mackerel by using the logistic growth function, Cobb-Douglas production function, fisheries cost and profit functions. As a result, optimal yields of mackerel and jack mackerel under ecological equilibrium of a sole owner were approximately 172,512 tons and 16,937 tons respectively. Also, optimal fishing efforts of mackerel and jack mackerel under the same situation were about 8,508 hauls and 4,915 hauls respectively. In conclusion, the paper suggests that the large purse seine should reduce fishing efforts and increase fish stock to generate higher net present value in optimally managed fishery than that of the present large purse seine.

우리나라 대형선망어업의 일본수역 조업특성 분석

유광민 ( Gwang-min Yu ),류경진 ( Kyung-jin Ryu ),김형석 ( Hyung-seok Kim ),이춘우 ( Chun-woo Lee ) 한국수산해양기술학회(구 한국어업기술학회) 2021 수산해양기술연구 Vol.57 No.2

The breakdown of the Korea-Japan fishing negotiations since 2016 has made it impossible for many domestic fishing vessels to operate in the Japanese EEZ water, and large purse seine fishing vessels are one of them. Mackerel is a highly migratory fish species, circulating in the East China Sea, South Sea, West Sea and East Coast throughout the year, and goes through a period of wintering, spawning, growth and feeding migration. In this study, in order to find out the dependence of large purse seine fishing vessels on mackerel fishing in the Japanese EEZ waters, we analyzed the characteristics of mackerel by large purse seine fisheries in the Japanese EEZ waters from 2010 to 2016. The catch and fishing details were investigated. The total catch of mackerel by large purse seine fishery, the average catch rate of mackerel in Japanese EEZ is 4 percent per year. The amount is estimated at 10.2 billion won per year. Although there was an effect, it was not judged to be a significant factor, and it was found that the amount of catch and fish price in the domestic waters had a greater influence on the total catch than the Japanese EEZ waters.

대형선망어업의 동태적 생산효율성 분석

서주남 ( Ju Nam Seo ),김도훈 ( Do Hoon Kim ) 한국수산경영학회 2012 수산경영론집 Vol.43 No.1

This study is aimed to estimate a dynamic productive efficiency by vessel of large purse seine fishery and analyze changes of them over times using a window/DEA method. In addition, based on estimation results, it aims to suggest production management implications for an viable development of fisheries. Results indicated that an annual efficiency change of large purse seine fishery was estimated at 0.77 for 2007~2008, 0.83 for 2008~2009, and 0.77 for 2009~2010, showing a decreasing trend. As returns on sales of vessels of large purse seine fishery showed a decreasing trend, the degree of efficiency of a vessel might be closely related to the fishing profitability. The Window/DEA method was used in this study to estimate the efficiencies of vessels for large purse seine fishery. This method is well known and widely used to analyze the dynamic efficiency and it can provide useful implications for management of input factors. As a limitation of this study, it was not able to provide detailed management ways to reduce inefficiencies. However, they can be investigated with data on managerial factor, human factor, distribution factors as a future study.

해밀토니안기법을 이용한 대형선망어업의 고등어․전갱이 최적어획량 결정

남종오 한국해양수산개발원 2011 해양정책연구 Vol.26 No.2

This paper estimates optimal production, fishing efforts, and stock of mackerel and jack mackerel caught by the large purse seine with current value Hamiltonian method and surplus production model. First of all, this study investigates volume of catches and fishing efforts of mackerel and jack mackerel caught by the large purse seine to estimate intrinsic growth rate, environmental carrying capacity, and catchability coefficient. Secondly, the study analyzes landing price and unit cost per fishing effort, and social discount rate to find optimal solution of production, fishing efforts, and stock by species from the current value Hamiltonian method. As a result, optimal production, fishing efforts, and stock summed from mackerel and jack mackerel caught by the large purse seine were 173,647 ton, 25,925 hauls, and 2,532,659 ton respectively. Optimal production, fishing efforts, and stock of mackerel caught by the large purse seine were 172,972 ton, 25,082 hauls, and 2,516,906 ton and optimal production, fishing efforts, and stock of jack mackerel were 702 ton, 843 hauls, and 15,753 ton respectively. In addition, when social discount rate continuously augments, the optimal production, fishing efforts, and stock of both species also increased. With increasing intrinsic growth rate of mackerel and jack mackerel, the optimal production, fishing efforts, and stock of them also increased. However, changing in the landing price and the cost per haul of both species, signals of the optimal production and stock of them were moved into opposite direction respectively. In conclusion, this study found that the large purse seine gears would catch much more mackerel with relatively high economic efficiency than jack mackerel under the optimal condition.

근해대형선망어업에서 어로기술개발에 따른 어획성능지수 변동

서영일 ( Young-il Seo ),황강석 ( Kang-seok Hwang ),차형기 ( Hyung-kee Cha ),오택윤 ( Taeg-yun Oh ),조현수 ( Hyun-su Jo ),김병엽 ( Byung-yeob Kim ),류경진 ( Kyong-jin Ryu ),이유원 ( Yoo-won Lee ) 한국어업기술학회 2017 수산해양기술연구 Vol.53 No.1

Lots of fishery stocks are overexploited and the overcapacity exists in Korean fishing fleets. One of the reasons is technological development, which increases the efficiency of the vessels continuously. The analysis was conducted to identify the change of fishing power index to develop the vessel and gear technology that may have improved the fishing efficiency of the offshore large powered purse seine fishery from 1960s to 2010s. Gross tonnage and horse power per fishing vessel was increased annually. Fishing gear material was changed to the knotless webbing to settle faster. Fishing equipments was modernized and supply rate was also increased. Therefore the relative fishing power index in the offshore large powered purse seine fishery increased from 0.4 in 1970 to 1.0 in 1980, to 1.5 in 2000 and to 1.6 in 2010, but the rate of increase slowed down gradually. The results are expected to contribute to reasonable fishery stock management.

대형선망어업의 내부마케팅이 선원태도에 미치는 영향에 관한 연구

한나영 ( Na Young Han ),한창은 ( Chang Eun Han ),홍재범 ( Jae Bum Hong ) 한국수산경영학회 2013 수산경영론집 Vol.44 No.2

This survey was conducted with crewmen on large purse seines in order to increase satisfaction of crewmen. The degree of fulfillment of internal marketing on crewmen (internal communication, empowerment, welfare benefits, management support, and reward system), satisfaction of crewmen, turnover intention, recommendation intention and need for achievement were examined, 200 surveys were distributed and 150surveys were returned, among which insincere responses were excluded to analyze 146 responses. The results are as follows. First, factors of internal marketing that influence satisfaction of crewmen include empowerment, welfare benefits, and reward, system. Second, turnover intention was reduced and recommendation intention was increased with increasing satisfaction of crewmen. Third, while need for achievement moderated the relationship between satisfaction of crewmen and turnover intention, it did not moderate the relationship between satisfaction of crewmen and recommendation intention. In other words, stronger need of crewmen for crewmen for achievement causes greater negative(-) effect of crewmen`s satisfaction on turnover intention.

어획특성을 이용한 삼치(Scomberomorus niphonius)의 회유경로 추정

김희용,임유나,송세현,김영혜 한국수산과학회 2016 한국수산과학회지 Vol.49 No.3

Seasonal catch distributions of large purse seines and daily landings of coastal set nets were analyzed to understand the migration path of the Spanish mackerel Scomberomorus niphonius around Korean waters. The Spanish mackerel start to move toward the coastal region in the South and West Sea in May for spawning and stay until July, when spawning finishes. Afterwards, they start to migrate to the East China Sea and the southern East Sea and are found irrespective of the onshore and offshore regions. Therefore, they disappear from the offshore region during the spawning season in June and July, and a new recruitment population of age 0 begins to inflow into the coastal fishing grounds in the South Sea and West Sea in August, one month earlier than in the Japanese coastal region of the East Sea.