• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2015년도 춘계학술대회
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• pp.205-207
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• 2015

The purpose of this paper is to analyze maritime piracy and its economic implications with particular attention to attacks registered in the Gulf of Aden, and to investigate in theory what is the rationale behind engaging in criminal behavior. The paper also aims to investigate how the International community along with Sovereign States should allocate resources in order to make the seas a safer place and describe how closely inter-related maritime piracy, preventive and punitive measure put in place by Governments are. Elements of economics and ergonomics are taken into account in order to properly investigate the major legal issues relating to maritime security.

• 한국항해학회지
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• 제21권1호
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• pp.57-73
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• 1997

This paper deals with internal and outernal factors of Maritime High School in Korea, and suggests the followings. The fist, superintendent authority of schools should be transferred to ministry of education from ministry of marine. The second, education system should be upgraded to junior college or 5 years education course. The third, the door of maritime university permission should be opened for maritime high school graduates. The fourth, training ship should be built for effective training course required form STCW 95. The fifth, if the graduates form maritime high school engage board, all of them should be exempted from military service responsibility. The sixth, the on board-training system for teachers and instructors should be programmed in order to help them keep and utilize the on board experience in actural education situation. The seventh, the school location should be placed in order to increase the efficiency of the education.

• 한국항해항만학회지
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• 제29권4호
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• pp.299-304
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• 2005

A simulation system is needed to train students and mariners in order that they can take suitable actions to evade typhoon's strike promptly and sufficiently. In order to make such kind of system, three kinds of models about the typhoon are necessary, typhoon prediction model to generate typhoon's track, wind & wave-field model to make sea conditions around the typhoon and evaluation model of trainee's action whether their actions were suitable or not during simulation. We have developed the prediction and wind & wave-field models of typhoon, but the evaluation model has not been developed yet. In this paper, after making a method for evaluating trainee's actions by seakeeping performance, we propose an typhoon avoidance simulation system for training mariners so that they can promote their abilities to evade the typhoons at sea.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2007년도 추계학술발표회
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• pp.115-119
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• 2007

The system of civil security service is analyzed and reviewed in order to induce it to maritime security domain. A system of civil maritime guarder who provides security service and cooperates with coast guard at sea is proposed. It is expected not only that some expecters on the field of maritime security service are built up but that the Qualities of security services are improved in considering characteristics of sea control and coast guard.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2005년도 추계학술대회지
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• pp.59-64
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• 2005

AIS(Automatic Identification System)는 선박의 항해안전 및 실시간 모니터링을 위하여 국제해사기구(IMO)에서 채택한 것으로서 선박의 제원 및 운항정보를 선박-선박/육상간에 자동 송수신하는 장치이다. 연안해역의 관제, 수색 및 구조지원, 선박통항관제 수단을 제공하여 주는 유용한 장비이다. 본 연구에서는 AIS 장비를 항로표지에 설치하여 항로표지에 대한 실시간 정보를 수집하거나 감시 및 제어 또한 이를 직접 선박에 제공하기 위한 실시간 유비쿼터스 해상표지시설의 구축을 위하여 실시한 해상실험을 결과를 분석하여 구축을 취한 방안을 제안 하고자 한다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2005년도 추계학술대회 논문집
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• pp.169-174
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• 2005

AIS(Automatic Identification System)는 선박의 항해안전 및 실시간 모니터링을 위하여 국제해사기구(IMO)에서 채택한 것으로서 선박의 제원 및 운항정보를 선박-선박/육상 간에 자동 송수신 하는 장치이다. 연안해역의 관제, 수색 및 구조지원, 선박통항관제 수단을 제공하여 주는 유용한 장비이다. 본 연구에서는 AIS 장비를 항로표지에 설치하여 항로표지에 대한 실시간 정보를 수집하거나 감시 및 제어 또한 이를 직접 선박에 제공하기 위한 실시간 유비쿼터스 재상표지시설의 구축을 위하여 실시한 해상실험을 결과를 분석하여 구축을 위한방안을 제안 하고자 한다.

• Ocean Systems Engineering
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• 제10권4호
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• pp.359-371
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• 2020

The performance of a multi-level overtopping wave energy converter (OWEC) has been numerically and experimentally investigated in a two-dimensional wave tank in order to study the effects of opening width of additional reservoirs. The device is a fixed OWEC consisting of an inclined ramp together with several reservoirs at different levels. A particle-based numerical simulation utilizing the Lattice Boltzmann Method (LBM) is used to simulate the flow behavior around the OWEC. Additionally, an experimental model is also built and tested in a small wave flume in order to validate the numerical results. A comparison in energy captured performance between single-level and multi-level devices has been proposed using the hydraulic efficiency. The enhancement of power capture performance is accomplished by increasing an overtopping flow rate captured by the extra reservoirs. However, a noticeably large opening of the extra reservoirs can result in a reduction in the power efficiency. The overtopping flow behavior into the reservoirs is also presented and discussed. Moreover, the results of hydrodynamic performance are compared with a similar study, of which a similar tendency is achieved. Nevertheless, the LBM simulations consume less computational time in both pre-processing and calculating phases.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.68.2-68
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• 2001

A position control system using hydraulic cylinder is modeled as a nonlinear system. In order to control this nonlinear system, in this paper, the fuzzy PID control technique which has time-varying control parameters is adopted. In this study, an exclusive sensor to detect the position of hydraulic cylinder is used, which is embeded in hydraulic cylinder.

• 한국항해항만학회지
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• 제32권9호
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• pp.693-698
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• 2008

The maritime education and training is executed in Asian countries according to The International Convention on Standards of Training, Certification and Watch keeping for Seafarers(STCW). However, mainly basic training and education takes in maritime universities, because this convention is minimum requirements to become junior mariner. So, until now researches have not developed to the stage of discussing how maritime universities of advanced shipping countries should pursue the direction of education in the new eras. Korea and Japan as the leading shipping countries in Asia, need to take initiatives in building a new education system in order to foster the next generation maritime expert. To enhance the professional abilities of maritime technologists in the new era, element design of science and technology relating to maritime issues and a new education system based on an amalgamation of maritime education and scientific and technological education were discussed.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 International Symposium on GPS/GNSS Vol.1
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• pp.59-66
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• 2006

This research is based on the information compiled on the occurrence of maritime casualties onboard ships registered under Central American Region (CAR) flag States. Due to nonexistence of writing reports in anyone of the countries that are integrating this Region, the information was compiled by the author through personal communication with the people involved in the casualties. The information was compiled by typing up the text and digitizing on the computer for the respective data base. For each casualty occurred, the following information was compiled, date and type of the casualty, position of the ship at the time of the casualty, dimension of the ship, number of people affected by the casualty, and cause and consequences of the casualty. Based on the number of people affected (death and disappear) by the casualties occurred was calculated the mortality rate by 100,000 persons and then compared with the Japanese mortality rate. Furthermore were analyzed the CAR maritime authorities competences and then were compared to that the Japanese counter part. In addition, the implementation rate of the International Maritime Organization (IMO) and International Labor Organization (ILO) conventions ratified by the CAR countries were analyzed. The objective of this research was to compiled and analyze the occurrences of maritime casualties happened on board the ships registered under the CAR Flag States, in order to determine the causes of these accidents. The results of the analysis enable us to better understand of the maritime safety situation of the ships that are registered under the CAR flag States. In order to reduce the occurrence of maritime casualties are proposed a series of measures based on the differences found then the comparison between CAR and Japan. Based on the results of this research, is possible to conclude that the inaccessibility of atmospheric information and the lack of safety measures onboard has been the main cause of the maritime casualties happened in the Pacific side of the CAR.