• 수산해양기술연구
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• 제57권4호
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• pp.283-291
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• 2021

The Korean stow net is a fishing method that utilizes the changing direction of the net entrance with the tidal current. This study attempted to obtain basic data from the recent offshore stow net fisheries to improve the gear by analyzing the dynamic behavior of the nets affected by current speed and direction using computer simulations. A numerical calculation was performed at a current speed of 0.5 knot between 2.5 knot at each 0.5 knot. The time taken for the gear opening was the longest from 0.5 knot at 1,500 seconds and the shortest from 2.5 knot at 450 seconds in the simulations. In all cases, the net width and tension at net deployment gradually decreased as the current speed decreased. However, the net height tended to increase inversely proportional to the current speed. During the net rotation, the net height was maintained at all cases. The net width and tension fluctuated, but the regularity was very low. In this study, the calculated simulation data showed that the opening efficiency decreased proportional to the current speed. The opening efficiency is related to the catching efficiency; therefore, it is necessary to improve the gear to enhance its opening efficiency.

• 수산해양기술연구
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• 제50권1호
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• pp.21-29
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• 2014

The dynamic information of radar and automatic identification system (AIS) for targets obtained from the traffic vessels operating in the north outer harbor and surrounding waters of Busan port, Korea. The target information was analyzed to investigate the potential collision risk resulting from the invalid true heading (HDT) information of AIS and the integration ambiguity in the graphic presentation of both tracked data sets for two systems. An integrated display system (IDS) for supporting the navigator of offshore fishing vessels was also developed to find possible maneuvering solutions for collision avoidance by comparing radar data with AIS data in real-time at sea. Consequently, the multiple functions of IDS can provide additional information that is potentially valuable for taking action to avoid the collision in offshore fishing vessels. However, the integration criteria of radar and AIS targets in the IDS must be carefully established to eliminate the fusion ambiguity in the graphic presentation of both AIS and radar symbols such as the one or two physical targets which are very close to each other.

• 해양환경안전학회지
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• 제23권6호
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• pp.628-638
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• 2017

최근 국내 일부 항해사들은 해운산업의 어려운 취업환경을 극복하고, 직업선택의 저변을 확대하기 위하여 승선경력을 기반으로 국내외 교육기관에서 DP운항사 교육을 이수하여 직종을 전환하고자 노력하고 있다. 그러나 아직까지 국내에서는 해양플랜트 서비스 산업이 활성화 되어있지 않기 때문에 동 분야로 진출하고자 하는 항해사들은 어렵게 자격취득을 위한 실습을 마치고 대부분 해외선사로 진출하고 있다. 그럼에도 불구하고 DP운항사로 취업을 희망하는 항해사들은 경력을 중시하는 해외 해양플랜트 기업의 보수적인 채용 절차, 비영어권 출신자의 언어사용의 한계, 다문화 승선생활의 어려움, 필수 직무요건에 대한 체계적인 정보 부족 등의 이유로 구직 단계에서 부터 어려움을 겪고 있다. 따라서 이 연구는 DP운항사가 갖추어야 할 직무능력 및 자격 요건을 분석하여 국가에서 요구하는 최소한의 능력 수준을 제시하고 있는 NCS 표준 개발을 위한 기초자료를 제공하고, DP운항사 전문인력양성을 활성화하기 위한 방안을 제시하는 데 목적을 두고 있다. 본 연구의 결과로서, DP운항사의 직무 분류, 직무능력표준 및 경력개발경로를 제시하였고, DP운항사 양성 활성화 방안으로서 DP 실습선박의 공동 활용, DP 전문 교원 양성 및 정부주도 NCS 수출모델을 제안하였다.

• 수산해양교육연구
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• 제17권1호
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• pp.132-143
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• 2005

In order to investigate the seasonal variation of watermass and fishery creatures in the adjacent sea of Naro Island, an oceanographic observation was carried out seasonally on the fishing grounds, and the sales performance data of the fisheries cooperative's joint market of Naro Island was examined by using a principal component analysis. The temperature and salinity ranged from 8.1 $^{\circ}C$ to 13.7 $^{\circ}C$ and from 33.1 psu to 34.3 psu in spring, from 14.5 $^{\circ}C$ to 24.2 $^{\circ}C$ and from 30.5 psu to 34.1 psu in summer, from 14.8 $^{\circ}C$ to 18.6 $^{\circ}C$ and from 30.1 psu to 34.0 psu in autumn, and from 4.3 $^{\circ}C$ to 10.1 $^{\circ}C$ and from 33.1 psu to 34.9 psu in winter, respectively. In winter and spring, the offshore water spread out to all sea areas of all water layers. In summer, the mixed waters covered the entire sea surface whereas the mixed water and offshore water covered the bottom. In autumn, the coastal water and mixed water appeared on the surface, but the mixed water was distributed widely on the bottom and the offshore water began to appear in the open sea. For two years from 2002 to 2003, 58 fishery creature species in total were sold in the fisheries cooperative's joint market of Naro Island. In general, the total of 50% fish were sold, and crustacea and mollusc by each 25%. Medium shrimp, whiparm octopus, blue crab, and octopus predominated. A number of species and biomass of fishery creatures were sold mostly in April and May, while they were sold the least in January and February. The seasonal sales results showed that mullet, angler, short necked clam, large shrimp, and webfoot octopus were sold mainly in spring, tonguefish, flathead, pomfret, glass eel, blue crab, whiparm octopus, and squid were sold mainly in summer, and octopus, medium shrimp, and spanish mackerel were sold mainly in autumn.

• 수산해양교육연구
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• 제26권5호
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• pp.1151-1157
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• 2014

The propensity analysis for oral exam candidates of sixth class engineer officer's license was conducted to serve as a basic data for improving the ability of seamanship and a stable workforce supply using a questionnaire. A general information of them was identified as 62.1% of offshore fishing, 59.3% of over 50, 59.4% of less middle school education, 52.4% of under 100 gross tonnage, 75.2% of under 1,500kW engine output, 72.5% of over 10 years experience, 72.4% of engine department, which means they are from mainly less than 100 gross tonnage of offshore fishing vessel, less educated, and long term experienced in the engine job. The reason why they took the test was mainly due to their will (51.7%). And 45.5% of them took the test for the first time, 45.5% of answers responded they are lack of knowledge about a written exam and text of KIMFT in preparation data for an oral exam 35.9%. Given the fact that 74.5% of respondents experienced marine accidents with engine damage on board, the need for marine casualty reduction education was verified. Even after obtaining a license, they showed a higher preference of boarding that they embarked before the examination. Also, 61.4% of them have a plan for long-term boarding at least three years, thus leading to supply of workforce in coastal and offshore areas.

• 수산경영론집
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• 제51권4호
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• pp.123-136
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• 2020

This study attempted to propose a method of determining a project implementation area according to the purpose of the Offshore Project for Fishery Stock Enhancement after analyzing the regional economic effects in advance targeting the candidate regions for the Offshore Project for Fishery Stock Enhancement. The main results of this study can be summarized as follows: first, in comparison with the overall effect of the Offshore Project for Fishery Stock Enhancement to 2013, the production inducement coefficient increased by 0.08 in the region, but decreased by 0.39 in other regions and by 0.33 in the whole country. The value-added inducement coefficient increased by 0.01 in the region and by 0.06 in other regions, increasing 0.27 for the whole country. In the case of the employment inducement coefficient, the number of workers in the region decreased by 9.48 and increased by 0.3 in other regions, resulting in a decrease of 9.1 people in the whole country. Second, depending on the purpose of the Offshore Project for Fishery Stock Enhancement, an aggregating indicator of economic effects within the region, an aggregating indicator of economic effects in other regions, and an aggregating indicator of economic effects across the country were prepared to be used to determine the priority of the project implementation region. There was a little difference between the 2013 and 2015 regional rankings according to the standardization method, indicating that the analysis results were somewhat consistent. In conclusion, the results of this study may contribute to determine the project implementation area according to the purpose of a specific project after analyzing the regional economic effect in advance.

• 수산해양교육연구
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• 제27권4호
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• pp.1129-1135
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• 2015

The stow net is a stationary gear made from netting, usually in shape like trawl net without wings. The nets are fixed by means of anchors, placed according to the direction and strength of the current. And the commercial fishing is associated with high rate of fatal and non-fatal occupational injury. The hazard factors analysis for the fishermen's safety of offshore stow nets vessel was conducted to serve as a basic data for improving the healthy and safe working environment of fishermen using fishermen's occupational accidents of the national federation of fisheries cooperatives (NFFC) from 2012 to 2014 (n=1,144). As a result, the average occupational accident occurrence rate of this fishery was 206.9‰ in all industries 36.9 times the rate of that. In addition, average death and missing rate was found to have a very serious level management to 50.4‰ in all industries of death of 42.0 times. The accident occurred in 84.5 to 94.6% was happened at sea. The struck by object, slipping, contact with machinery, contact by object or gear and others occurred more frequently in order on the frequency of accident occurrence pattern. However, the occurrence rate of death and missing did not match the frequency of accident pattern. In other words, slipping occurred frequently higher while death and missing risk was not high. And the contact with fishing gear and fall in the waters was low while death and missing risk was high. The results are expected to contribute for identification and assessment of safety hazard occurred in offshore stow nets vessel.

• 해양환경안전학회지
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• 제21권4호
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• pp.428-436
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• 2015

이 논문은 해양플랜트에 필요한 인력, 화물 등을 지원, 보급, 운송하는 지원사업의 의의와 특징에 대해서 고찰하고, 현행법과 관련된 문제점을 식별하여 해운법에서 정하는 해상운송사업에 대한 개정을 통한 법의 공백을 최소화함과 동시에 해양플랜트 서비스산업 발전에 필요한 사항을 입법론적으로 제안하였다. 왜냐하면 해양플랜트 지원사업은 기존의 해운법에서 규정하고 있는 국내 외 해상화물 및 여객운송사업의 범위에 완벽하게 포함되지 못하고 있기 때문이다. 따라서 국내에서 해양플랜트 지원선박을 이용하여 해양플랜트에 인력, 화물 등을 지원, 보급, 운송하는 사업을 발전시키기 위해서는 기존의 법역( )의 범위내에서 관리할 수 있도록 해양플랜트 지원사업의 정의와 함께 해운법상의 개별 조항에 대한 명시적인 개정안을 마련할 필요가 있다. 그리고 이 논문은 향후 해양 플랜트 서비스산업 전체의 활성화하는데 필요한 정책적, 법제도적 분야에 대한 추가적인 연구의 진행하는데 선행되는 기초자료로서의 역할을 할 것으로 판단된다.

• 수산해양기술연구
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• 제15권2호
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• pp.77-82
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• 1979

멸치는 남해안에서는 여러 단계의 크기의 것이 혼획되는데, 가다랭이 미끼용으로는 채장 6-7m의 것이 알맞으므로, 이 크기의 것을 가급적 언중 확보하기 위해서는, 그 분포상을 조사하여 적정 자원이 가장 많이 출현하는 해역을 알 필요가 있다. 또, 멸치의 크기에 따라 상품가치도 크게 다르므로 멸치 어업을 합리적으로 운영하기 위해서나, 자원의 관리를 위해서도 채장 조사는 중요하다. 여기서는 멸치어업이 주로 이루어지는 7월부터 12월의 한국 동남 해역에 있어서의 멸치의 분포상에 관하여 조사한 것을 보고한다

• 수산해양교육연구
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• 제26권5호
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• pp.1158-1164
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• 2014

The propensity analysis for oral exam candidates of sixth class deck officer's license was conducted to serve as a basic data for improving the ability of seamanship and a stable workforce supply using a questionnaire. A general information of them was identified as 64.4% of offshore fishing, 56.8% of over 50, 56.6% of less middle school education, 55.6% of under 100 gross tonnage, 81.2% of over 10 years experience, 85.6% of deck department, which means they are from mainly less than 100 gross tonnage of offshore fishing vessel, less educated, and long term experienced in the deck job. The reason why they took the test was mainly due to their will (71.1%). And 52.7% of them took the test for the first time, 52.7% of answers responded they are lack of knowledge about a written exam and text of KIMFT in preparation data for an oral exam 23.3%. Given the fact that 83.3% of respondents experienced marine accidents on board, the need for marine casualty reduction education was verified. Even after obtaining a license, they showed a higher preference of boarding that they embarked before the examination. Also, 61.7% of them have a plan for long-term boarding at least three years, thus leading to supply of workforce in coastal and offshore areas.