• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.12 no.2
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• pp.49-55
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• 1976

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 1998.06a
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• pp.28-30
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• 1998

• Environmental and Resource Economics Review
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• v.15 no.1
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• pp.71-94
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• 2006

Reducing fishing capacity is one of hot issues in the world fisheries. Increased fishing capacity causes not only fish stocks to be depleted, but also additional fishing costs to be incurred, resulting in reductions of fishing profits. In order to achieve a sustainable and profitable development of fisheries, it is inevitable to reduce fishing capacity. For this reason, FAO adopted 'the International Plan of Action for the Management of Fishing Capacity' and recommended member countries to estimate fishing capacity and to implement the policy to reduce fishing capacity. This study is aimed at measuring fishing capacity of Large Purse Seines Fishery using a Data Envelopment Analysis (DEA). The DEA result showed that the practical catch of large purse seine fishery in 2003 was 158,662 tons, but the capacity output for current input was 318,397 tons. The capacity utilization is about 50%, it is obvious the capacity did not utilize enough. The sensitivity analysis on DEA results indicated that the number of ships (including tonnage and horse power) should be scrapped by 50% or days fished should be reduced by 63% if the present catch remained. In addition, if the catch remains at the MSY base level of large purse seines, the analysis suggested that the number of ships (including tonnage and horse power) should be reduced by 30%, otherwise days fished should be reduced by 60%.

• Journal of Fisheries and Marine Sciences Education
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• v.20 no.3
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• pp.400-409
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• 2008

The purpose of this study is to examine annual changes of coastal fisheries production in the shore of Jeonbuk Province in Korea. The catch data of an experimental vessel that used dredge nets were used to study fish species and catch per unit of fishing effort carried out from April 2002 to November 2004. The total number of fish species caught in 2002 was 23, and 15 in 2004. Total number of individuals were 6,008 and their total weight was 376.38 kg in 2002. In 2004, total number of fishes was 2,469, and their weight was 211.99 kg. The annual changes in fisheries production in the western coast of Korea were also analyzed from 1990 to 2007. The total near shore fisheries products in Korea has been relatively stable around 1,4000,000 metric tons to 1,8000,000 tons during this period. Similarly the Chungnam Province's annual fish catch had steadily risen from about 51,187 tons in 1990 to 85,637 tons in 2007. However, Jeonbuk Province's annual fish catch declined dramatically at around 133, 000 tons in 1990 to 45,000 tons in 2007. In summery, while the overall Korea's fisheries production has been stable over the past decade, that of Jeonbuk Province suffered drastic decline in the period. This decline was reflected in the decreased number of fish species, total individuals, and total catch in surverys performed with an experimental vessel.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2004.04a
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• pp.111-116
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• 2004

A fishing gear is an used tool to achieve fishery effectively. Especially, long line is fishery method to confect branch line to fixed space to main line and bind fishhook 1 in branch line end. This paper presents the design and implementation of fishing gear type setting system for fishing gear layout management in the long line work. In this paper, we design overall fishing gear type setting system. For this purpose, the modules such as system user and communication environment setting module, fishing gear type setting module, module of fishing gear shooting model are designed and implemented. For the validity evaluation of this paper, fishing gear type design and shooting process are implemented and tested.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.39 no.1
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• pp.50-55
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• 2003

In order to study on the improvement of gill nets and trap nets fishing for the management of fisheries resource in the coastal area of Yellow Sea, we have investigated the general present condition of those fishing, and the actual fishing operation of gill nets for croaker and trap nets for rock shell which is called the the other trap nets, and then measured the body length of croaker and blue shell caught by their fishing vessels. The results are as follows ; 1. The total number of permission for coastal fishing are 12,944 cases, but the number of operation for coastal fishing are 7,558 cases in the coastal area of Yellow Sea. Among the total number of permission, the gill nets fishing are 5,154 cases with 39.8% but even so the number of operation are 3,724 cases, the trap nets fishing are 1,025 cases with 7.6% but even so the number of operation are 662 cases. On the fishing ratio, the gill nets and trap nets fishing are comparatively higher than the other fishing with 72.3% and 64.6%, respectively. 2. The main fishing period of gill nets for croaker is from the middle of July to early of September, and the main fishing grounds are sandymud bottom of 15-50m in depth around the islands of southern parts of western coastal area, and the fishing operation carry out 1∼2 times per day in flood tide and nets hauling conduct in 1∼2 hours after drifting with current. 3. The distribution range of body length of 139 croakers, which are caught in the gill nets, are 43.0∼120.0㎝ and the mode is 85.0㎝. 4. The main fishing period of trap nets for rock shell which is called the other trap nets is all the year round except the catching period of blue crab from early of September to the middle of October, and the main fishing ground are the sandymud bottom of 10∼20m in depth, and nets hauling conduct in next day after nets casting. 5. The distribution range of maximum carapace of 5,372 rock shells are 4.5∼8.5㎝ and the mode is 7.5㎝.

• Journal of Fisheries and Marine Sciences Education
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• v.8 no.1
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• pp.92-107
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• 1996

Based on the act.ivity report for the coastal fisheries resources conducted from 1982 to 1989 by West, East Research Institute of Fisheries, some other reports from Korea Rural Economics Institute and etc., and the questionnaire results for the senses of fishermen, the fishing efficiency and conditions of by - catch of small fish in winged stow net were analized, and then some ways to prevent from by - catch of small fishes were suggested in this paper. The nationwide conditions of Permission and Disposal in winged stow net fishery arc that number of cases of coastal winged stow net fishery has dropped to 757 by 1994 while it was 961 in 1991 and that the number of cases of a sectional winged stow net fishery on the contrary has increased to 302 by 1994 while it was 11 in 1991. Regardless of region, catch per net by year in general has been on gradual increase in 1982 through 1989, but that showed decrease in 1994. From the view of region, the proportion of by - catch of shrimps and blenny is higher in Kyonggi, Chungnam with West Sea and that of anchovy and blenny is higher in Chonbuk, Chonnam, Kyongnam with South Sea. The average proportions of by - catch of small fish for 5 years from 1985 to 1989 are 86.9% for sand lance, 69% for anchovy, 63% for big eyed herring, 51% for blenny, 22% for Southern rough shrimp and 19% for akiami paste shrimp, hence sand lance and anchovy are highly by - catch effective while shrimps is not. Ways to prevent the over fishing of small fish in winged stow net fishery includes reduction of fishing frequency during April and August through November, the very season for small fish, use of meshes large enough for small fish to go through and assignment of fishing area to other than habitats of stationary fish.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.255-256
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• 2016

어선의 어업별 밀집 분포도 구축을 통해 어선의 통항흐름을 인지하여, 스크류/추진기 등의 손상과 어망 손괴사고 등을 예방할 수 있다. 아울러, 전국 연안 VTS의 관제구역 설정, 제주연안 돌고래 보호구역 설정, 해상풍력발전 단지 조성과 같은 해상교통안전진단 등의 타당성 입증자료, 허베이스피리트호 사건과 같은 유류유출사고 등과 같은 피해액 산출 추정을 위한 기초 자료로도 활용될 수 있을 것으로 판단된다.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.10a
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• pp.73-74
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• 2000

어업용 프레임 구조물 중 부유식의 것은 수면에 떠 있는 프레임과 그 하부에 있는 그물이 조류와 파랑에 의한 저항을 동시에 받고, 낙망 등과 같은 수중 침하식의 것은 그 전체가 조류에 의한 저항을 많이 받기 때문에, 이들 구조물의 안전성은 그들이 받는 저항의 크기에 따라 크게 달라진다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.10a
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• pp.37-38
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• 2000

멸치초망어업의 조업방식은 챗대 2개, 콧대 1개를 사용하여 조업선의 우현에서 그물을 수중 전개시키며, 양망은 주기관에 연결된 사이드 드럼 2개를 사용하여 큰 챗대와 작은 챗대를 반 기계적으로 들어올리고, 콧대와 그물은 순수 인력으로 들어올린다. 이와 같은 작업은 야간에 수 차례 반복되기 때문에 많은 노동력과 조업인원을 필요로 하는 노동집약형 구조를 가지고 있다. (중략)