• 수산해양기술연구
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• 제30권3호
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• pp.150-160
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• 1994

Drift gillnet fishery for neon flying squid in the North pacific was one of the major pelagic fisheries of Korea until 1992, its annual catch was 79, 000M/T as average during 1988-1992, but moratoriumed since 1993 according to the decision of UN. Therefore, for the developing of the new fishing gear for the squid, the seven types of rip hook by automatic squid jigging machine were experimented by the korean research vessel Pusan 851 (G/T 1.126, 2.600 PS) in the North Pacific (38 $^{\circ}$30'-43 $^{\circ}$N, 152 $^{\circ}$E-178 $^{\circ}$W) from July 6. 1993 to August 31. 1993. The investigation on catch rate, dropout rate, and catch condition of the rip hooks related to the fishing lamp power for aggregating the squid were carried out during the period. The results obtained are as follows: The composition of catch by automatic squid jigging machine was 83.9% for neon flying squid. 15.5% for boreopacific gonate squid. 0.6% for boreal clubhook squid, and 0.01% for luminous flying squid. The catch rate of neon flying squid was 94.6% in 13.6-18.3$^{\circ}C$ of surface water temperature and 5.4% in others. The higher catch rate of neon flying squid was made in the range 13.6-18.3$^{\circ}C$ of temperature at the surface and about 1$0^{\circ}C$ of temperature at the 100m layer. The CPUE of neon flying squid in the 13.6-18.3$^{\circ}C$ of surface water temperature was ranged 0.8-11.8kg (8.7kg as average). The mantle length and body weight of neon flying squid caught in the experiment were ranged 18.3-51.3 cm, 140-3, 980g and mean mantle length and mean body weight were 29.4cm, 972g respectively. The catch rate of neon flying squid was the highest at dawn with a value of 25.0% of the total catch. The body weight of neon flying squid caught by the D type hooks was 1.7 times more than that of the A type hooks. The dropout rate of neon flying squid caught by the seven types hooks was 7.9-57.5% (19.0% as average), and dropout rate of the D type hooks was 7.9% with 2.7 times decrease than that of the A type hooks. The catch efficiency of small sized neon flying squid in case of using on-off switch method on fishing lamp in 15 minutes intervals was 2.6 times higher than that of the on-switch method with same fishing lamp power.

• 한국수산과학회지
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• 제35권6호
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• pp.644-653
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• 2002

일본 홋카이도 하코다테, 니이가타현 사도 ,이시카와현 노토마치 및 나가사키현쯔시마 지역에서 소형 오징어 채낚기 어선의 톤수와 집어등 광원 출력 및 각 어선의 일별 연간 어획량 자료를 수집하여, 어선의 톤수와 집어등 광원 출력이 단위 노력당 어획량에 미치는 영향에 대해서 검토하였다. 어선이 설비하고 있는 집어등 광원 출력은 어선의 톤수가 증가함에 따라 증가하는 경향을 보였다 어선의 집어등 광원 출력 계급별 어획량 및 어선의 톤수 계급별 어획량은 집어등 광원 출력과 어선의 톤수계급이 증가함에 따라 단위 노력당 어획량도 증가하였으며, 어선의 어획 효율은 11$\~$15톤급 어선이 100-200kw의 집어등 광원 출력 조건을 갖는 경우가 좋은 결과를 나타내었다. 이것은 소형 오징어 채낚기 어선의 경우, 집어등 광원 출력을 200kw, 어선의 톤수를 15톤까지 증가시키는 범위 내에서 어획 효율의 증가를 기대할 수 있다는 것을 의미한다. 이상의 소형 오징어 채낚기 어선의 톤수 $(GT) x_1$와 집어등 광원출력 (kW) x,이 단위 노력당 어획량 (box/machine/day) y에 미치고 있는 관계를 다중 회귀 정규 방정식을 이용하여 표현하면 다음과 같은 관계식으로 정리할 수 있다.

• 수산해양기술연구
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• 제48권4호
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• pp.337-345
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• 2012

One of representative Korean fisheries, jigging and angling has 5,700 vessels for squid and hairtail. Hairtail angling is the most typical fishery in Jeju and has an enormous impact on regional economy. However, the price hike in oil and labor costs triggered the necessity of developing a high efficient and energy saving fish luring lamp in recent times. For that reason, this study aimed to analyze the fishing performance of the aircooled LED lamp targeting hairtail angling fishery. The experiment was conducted from September through October in 2009-2011 for a 9.77 ton of fishing vessel setting up 100 lamps. The fishing performance was tested compared with 6 vessels using metal halide lamps in the same waters. As the LED lamp's performance goes up, different lamps were used in 2008 for 80W, 2009 for 120W and 2011 for 180W respectively. The catch and CPUE of the experimental vessel have gradually increased respectively taking the $4^{th}$ and $6^{th}$ place in 2009, the $4^{th}$ and $2^{nd}$ place in 2010, the $1^{st}$ and $1^{st}$ place in 2011 among the 7 vessels. In summary, the LED fishing lamp showed higher fishing performance than comparison groups. It saved 33% of oil consumption and cut down on operating expenses and greenhouse gases emission.

• 수산해양기술연구
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• 제55권1호
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• pp.74-81
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• 2019

According to the recent presentation by the Korean Maritime Safety Tribunal, about 70% of marine accident occurs from fishing vessel, and 90% of cause of entire marine accidents attributes to human error. As fishing vessels require basic operations, fishing operations, other additional operations and techniques such as fish handling, cultivating excellent marine officer to prevent marine accident and develop industry is very important. A fisheries training ship is still very difficult to satisfy the demand for diversity of fishery training and sense of realism of the industry. As the result of employment expectation by category of business survey targeting 266 marine industry high school graduates who hope to board fishing vessels for the last four years, tuna purse seine was the highest with 132 cadets (49.6%), followed by offshore large purse seine (65 cadets, 22.4%), and tuna long line (35 cadets, 13.2%). The Korea Institute of Maritime and Fisheries Technology (KIMFT) has replaced old jigging and fish pot fishery training ships and proceeded developing and building multi-purpose fisheries training ships considering the demand of industry and the promotion of employment; however, the basic fishing method was set for a tuna purse seine. As a result of seakeeping model test, it can conduct the satisfiable operation at sea state 5, and survive at sea state 8.

• 해양환경안전학회지
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• 제25권5호
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• pp.535-541
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• 2019

본 연구는 해상풍력발전단지 내 어업의 가능성을 살펴보고자, 어구 및 어법이 해상풍력발전단지 내 터빈과 해저케이블에 미치는 위험도를 평가하였다. 서남해 해상풍력발전단지를 연구 대상 해역으로 설정하여, 주변 국가어항의 선박 현황을 조사하였다. 어선의 현황을 참조하여 22개의 어구 및 어법에 대하여 위험도 평가 기준을 설정하고, 전문가를 통해 위험도를 평가하였다. 위험도가 낮아 해상풍력발전단지 내에서도 조업이 가능하다고 판단되는 어구 및 어법은 외줄낚시, 대낚시, 멸치챗배였으며, 위험도가 보통으로서 조업이 가능하기는 하나, 주의가 필요하다고 생각되는 어구 및 어법은 바닥주낙, 뜬주낙, 끌낚시, 오징어채낚기, 문어단지, 주꾸미소호, 연안통발, 주목망, 낭장망, 고정자망, 유자망이었다. 위험도가 높아 해상풍력발전단지 내 조업이 어렵다고 판단되는 어구 및 어법은 형망, 빔트롤, 건착망류였으며, 위험도가 아주 높아 해상풍력발전단지 내 어업이 허용되기 어렵다고 판단되는 어구 및 어법은 안강망, 기선권현망, 오터트롤, 외끌이기선저인망, 쌍끌이기선저인망이었다.

• 수산해양기술연구
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• 제50권4호
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• pp.567-582
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• 2014

Coastal fisheries in Korean waters have highly complexity with a variety of fishing gears, and scale of those fisheries is smaller than that of offshore fisheries. As a result, important spawning and nursery grounds for many species of fish has been destroyed. The pragmatic ecosystem-based approach was developed for the assessment of fisheries resources in Korean waters by Zhang et al. (2009; 2010). As for the species risk index (SRI), common squid caught by coastal gillnet in the Uljin region had the highest risk. As for the fisheries risk index (FRI), coastal gillnet in the Uljin coastal waters had the highest risk. For the common squid which had the highest SRI, resources management strategies must be established such as catch prohibition of length and period with TAC. For the coastal gillnet in the Uljin region which had the highest FRI, it is judged to need management plans for conserving biodiversity as reducing the catch of non-target species and discards. Also to protect existing habitat, illegal fishery should be prohibited, and fishing gears should be designed in the environmental-friendly way considering when fishing gears lost.

• 수산해양기술연구
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• 제40권4호
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• pp.282-294
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• 2004

아르헨티나 짧은지느러미오징어는 1993년에 99,000톤에서 1994년 56,600톤으로 감소하고 1996년에는 78,600톤에서 1997년 130,300톤으로 다시 증가하였다. 어획량의 급감 및 급증한 1993~1994년과 1996~1997년의 성어기인 3~5월의 풍도 원인을 구명하기 위하여 아르헨티나 짧은지느러미오징어의 수온 변동에 따른 풍도 변화를 분석하였다. 호황을 보였던 해인 1993년과 1997년은 성어기에 주로 50$^{\circ}$~51$^{\circ}$S간 해역에서 주어장이 형성되었고, 불황을 보였던 1994년과 1996년에는 50$^{\circ}$S이북에서 성어기 어장이 형성되었으며 포클랜드 어장의 평균수온은 3월 10~11$^{\circ}$C, 4~5월은 9$^{\circ}$C로 평균 등온선이 형성되는 위치에 따라 어황이 변동하는 것으로 나타났다. 아르헨티나 짧은지느러미오징어의 높은 단위노력 당어획량(kg/line) 및 어획량은 어장이 포클랜드 해류의 영향을 받지 않은 1993년 및 1997년은 호황을 보였고, 북상하는 포클랜드 해류의 영향을 받은 1994년 및 1996년에는 급격히 감소되어 불황을 보였다.