• 수산해양기술연구
• /
• 제43권4호
• /
• pp.339-346
• /
• 2007

Estimating fishing capacity is one of current hot issues in the international fisheries. It is because that increased fishing capacity has caused not only fish stocks to be reduced, but also additional fishing costs to be incurred without additional incomes, which resulted in decrease of economically viability of fisheries. In order to solve this problem, FAO adopted 'the International Plan of Action for the Management of Fishing Capacity' in 1999 and recommended that member countries to measure fishing capacity and to implement the domestic action plan to reduce excess fishing capacity. This study is aimed at assessing fishing capacity of the octopus coastal trap fishery(OCTF) using data envelopment analysis(DEA) which is a method recommended by FAO. The DEA results on 10 individual OCTF vessels showed that the capacity utilization(CU) was a 0.93 on average, indicating some differences in CU among vessels(0.79-1.0). In addition, results of the sensitivity analysis revealed that under the current level of catch, the gross tonnage, horse power, days fished, and traps per trip could be reduced by 35%, 33%, 16%, and 18% on average, respectively.

• 대한조선학회논문집
• /
• 제60권3호
• /
• pp.175-185
• /
• 2023

Many small vessels such as fishing boats operate in the world's oceans; accordingly, interest in these small vessels' exhaust-gas problem is increasing. Research on the application of electric-propulsion technology has been steadily conducted; however, the subject is limited to research ships or leisure boats, while research on application efficiency remains insufficient. This study attempts to apply lithium-battery electric-propulsion technology to small ships. A gross tonnage of 9.77, a representative fishing boat, is to be redesigned as a fully electrified ship. Without changing the main cabin's dimensions and fuel tanks, the ship's propulsion system is redesigned based on a lithium-battery electric-propulsion system. In addition, the redesigned system is compared with the original sample ship's diesel-propulsion system for application-effect analysis. The results indicate that under controlled sailing conditions, the weight and volume of the electric-propulsion system are 9.5 and 10.5 times those of the diesel-propulsion system, respectively. These values indicate that the system cannot meet fishing boats' high endurance requirements. Therefore, under the existing technical conditions, applying the full lithium-battery electric-propulsion system to solve the problem of high emissions from fishing boats shows limited feasibility.

• 수산해양교육연구
• /
• 제4권2호
• /
• pp.109-120
• /
• 1992

The auther reported the distribution of fisheries high schools and arrangement of curriculum in Japan in the forward report, and describes on the outer apparance and substantiality of education of fisheries high schools in Japan in the present report. 1. The rate of population to the number of fisheries high school shows 2,350 thousands in Japan, compared with 3,250 thousands in Korea. Then the rate in Korea is 1.4 times as high as that in Japan. 2. The rate of pupil to the whole regular instructors for fundamental subjects and for vocational subjects in the fisheries high schools, and also the rate to the instructors for vocational subjects show 10.4 and 16.3 in Japan, compared with 18.2 and 30.2 in Korea. Then the rate in Korea is 1.8 times as high as that in Japan. In addition to the instructors for vocational subjects. trainer and assistants for technical training-are employed in Japan compared with no such instructors or assistants in Korea. Then the rate of pupil to the whole instructing staffs in Korea is 2.4 times as high as that in Japan. 3. 81 percents of training ships in Japan are larger than 400 gross tons, which is extremely higher to that in Korea. The rate of gross tonnage of the ships to the number of trainees shows 6.2 tons in Japan compared with 1.1 tons in Korea. Also such large dimensioned training ships are newly built every other 12 years. the construction cost per 1 gross ton of such ships are said as 2.5 to 3 million yen, which corresponds to 15 to 18 million wons, and is over 3 times as much as that in Korea. 4. The basic education on the marine field is widely diffused in Japan. For an example, swimming pools are prepared not only in fisheries high schools but also in primary schools although it is rate even in fisheries high schools or colleges in Korea. 5. Almost all provinces which locate on the seashore have at least one fisheries high school and the curriculum is arranged to match the needs of local districts, then the management of school is tightly linked to the local government. 6. Entrance system is also flexible and recommended entrance system for successors of fishermen is settled. 7. Re-education of instructors for the new subjects which should be prepared to match the demands of ages are supported by local government in the aspect of time and budget. 8. The special two-year course for advanced seamen' s education is attached to some fisheries high schools and the graduates are qualified to get the third grade marine officer's or engineer's liscence.

• 한국항해항만학회지
• /
• 제32권1호
• /
• pp.29-35
• /
• 2008

최근 지구 환경 문제의 심각성이 대두되면서, 전과정 평가(Life Cycle Assessment)에 대한 선박 적용 연구가 국제적으로 활발하게 진행되고 있다. 이에 반하여 국내연구 수준은 아직 기초 연구수준에 그치고 있다. 본 논문에서는 선박 LCA의 개요를 살펴보고, 전과정평가의 선박 적용에 대한 연구를 다루었다. 특히 선박의 전생애 과정중에서 선박 운항 인벤토리 부분을 다루었다. 대상 선박은 목포해양대학교의 실습선 2척을 모델로 삼았으며 과거 수년간의 실적 데이터를 분석하여 운항인벤토리 중 배출 가스의 정략적 데이터를 분석하였다. 이 분석을 통하여 선박 총톤수 1톤을 운항 유지하는데 배출되는 배기 가스량을 분석하였고, 이와 함께 실습생 1명을 1년 교육시키는데 현재 어느 정도의 배기가스가 발생하고 있는지 살펴보았다.

• 한국항만경제학회지
• /
• 제21권4호
• /
• pp.121-139
• /
• 2005

The case, Papera Traders Co. Ltd. and Others v. Hyundai Merchant Marine Co. Ltd and Another(The Eurasian Dream), was occurred on July, 1998 when the ISM Code became mandatory under SOLAS and from that date it applied to oil tankers, chemical tankers, gas carriers, bulk carriers and cargo high-speed craft of 500 gross tonnage and above. On July 23, 1998, a fire started on the deck of pure car carrier Eurasian Dream while in port at Sharjah. The source of fuel was the stevedores action of pouring petrol or transferring fuel in some way - refueling or pouring into a carburettor. The fire eventually destroyed or damaged the vessels cargo of new and second-hand vehicles and rendered the vessel itself a constructive total loss. Justice Cresswell held that the fire that destroyed or damaged the cargo was due to the unseaworthiness of the vessel they have the burden of proving that the vessel was unseaworthy before and at the beginning of the voyage and that the loss or damage was caused by that unseaworthiness. This case was a dispute between dependent and claimant alleging that the carrier should provide "properly man, equip and supply the ship and keep the ship so manned" under Hague-Visby Rules. Although ISM code was not officially applied to the carriage by car carriers until July 2002, a rule based on the code had customarily been employed as a mean for international dispute resolution. Examining the above case closely, the purpose of this study is to explore the relation of ship management and obligation to exercise due diligence in making the vessel seaworthy.

• 수산해양기술연구
• /
• 제54권3호
• /
• pp.224-230
• /
• 2018

Squid is one of the important fisheries resources in Korea. Therefore, squid has been designated and managed as a target species of total allowable catch (TAC) since 2007, but the catch amount is gradually decreasing. The analysis was conducted to identify the change of relative fishing power index to develop the vessel and gear technology that may have improved the fishing efficiency of the offshore squid jigging fishery from 1960s to 2010s. Gross tonnage per fishing vessel increased with the increase in size until 1990, but then gradually decreased to 41.0 tons in 2000 and 37.1 tons in 2010. The illuminating power (energy consumption) by fishing lamps increased to 180 kW in 2005 and stabilized to 120 kW in 2015. Jigging machine started to be supplied to fishing vessels from the early 1970s, and fish finders began to be supplied in the early 1980s and gradually increased. Therefore, the relative fishing power index in the offshore squid jigging fishery increased from 1.0 in 1980 to 1.1 in 1990, to 3.5 in 2000 and to 2.5 in 2010, but the increment rate slowed down gradually. The results are expected to contribute to reasonable fisheries stock management.

• 수산해양기술연구
• /
• 제56권1호
• /
• pp.26-36
• /
• 2020

Thousands of pelagic and demersal fishes inhabit the waters around Korea and many of them are overexploited. 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 otter trawl fishery from 1960s to 2010s. Gross tonnage was decreased stably, but horse power was increased annually. The perimeter of net mouth was somewhat longer, but little changed. Color fish finder was utilized from the mid-1960s. Hydraulic net drum were introduced in the early 1990s, and supply rate was gradually increased. Surveys on the supply and upgrading of fishing equipment utilized visiting research. Therefore, the relative fishing power index in the trawl fishery increased about two to three times in the 2010s compared to the 1980s. The results are expected to contribute to reasonable fisheries stock management.

• 수산해양기술연구
• /
• 제56권1호
• /
• pp.37-44
• /
• 2020

The change of fishing power index was analyzed to identify the development of the vessel and gear technology that may improve the fishing efficiency of the offshore conger eel pot fishery from 1980s to 2015. Gross tonnage per fishing vessel was rapidly increased annually. The standard of pot was maintained, but the number of pot used rapidly increased by using conger eel pot hauling devices, carrying and loading devices, main line hauler, casting devices and slide type pot. Fish finder system to identify fishing ground information and the conger eel pot hauling devices were modernized, and supply rate was also increased. Therefore, the relative fishing power index in the offshore conger eel pot fishery increased from 1.0 in 1980 to 1.3 in 1990, to 1.8 in 2000 and to 2.0 in 2015. The results are expected to contribute to reasonable fisheries stock management of the offshore conger eel pot fishery.

• 수산해양기술연구
• /
• 제53권1호
• /
• pp.12-18
• /
• 2017

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.

• 정보보호학회논문지
• /
• 제23권3호
• /
• pp.515-530
• /
• 2013

해양사고 조사의 결과는 원인규명은 물론 가해자 및 피해자의 과실여부와 과실정도를 판단하는 중요한 결정기준이 되고 있다. 그러나 해양사고는 해양이라는 특수한 환경에서 발생하기 때문에 사고현장의 보존, 사고 재연 및 목격자 확보 곤란 등 원인규명의 어려움이 있다. 이러한 해양사고의 특징으로 국제해사기구에서는 최근 발달된 전파통신 및 항해기술을 해상인명안전 협약에 도입하여 일정 규모 이상의 선박에 항해자료기록장치와 선박자동식별장치의 설치를 의무화하였고, 국제적으로 통일된 사고조사와 공조를 위해 발효한 새로운 해양사고 조사코드에서는 각 체약국에게 항해자료기록장치의 분석역량을 갖추도록 권고하고 있다. 이에 따라 본 논문에서는 선박용 블랙박스인 항해자료기록장치의 데이터 유형을 분석하고 디지털 포렌식 절차와 기법을 활용하여 사고원인을 효율적으로 조사할 수 있는 방법을 제시한다.