• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.36 no.3B
• /
• pp.248-253
• /
• 2011

Collision avoidance algorithm of vessels have been studied to avoid collision and grounding of a vessel due to human error. In this paper, We propose a collision avoidance algorithm using bayesian estimation theory for safety sailing and reduced risk of collision accident. We calculate collision risk for efficient collision avoidance using bayesian algorithm and determined the safest and most effective collision risk is predicted by using re-planned with re-evaluated collision risk in the future(t=t'). Others ship position is assumed to be informed from AIS. Experimental results show that we estimate the safest and most effective collision risk.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2003.05a
• /
• pp.16-20
• /
• 2003

Recently, The fast change of fishing boat fishery surrounding environment is connected by request of fan shape development that meet in restructuring of existing fishing boat fishery and new community, economical surrounding. In southern sea district along the coast work and district along the coast fishing bats that sail to exposed propeller fishing net, rope etc.. cold real condition that accident is increasing every year. This study is thing which analyze main performance of minuteness water jet type district along the coast fishing boat through model examination to propeller protection tunnel sticking district along the coast fishing boat that correct existing stem shape for marine accident prevention of district along the coast fishing boat in viewpoint such as ideal and examines.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.14 no.3
• /
• pp.177-181
• /
• 2008

In this study, the authors analyzed the limit of IOPC Fund system, such as limit of compensation, amount of FC, long period of assessment by IOPC Fund, issue of non verification by poor claimant or small business, issue of poor claimant subsistence in early stage of accidents, and comparatively analyzed how the three countries resolved these limits by enacting special laws and government policy. Until recently most governments have carried out prevention policy for maritime safety, oil spill response, investigation of maritime accidents, and restoration of marine environment when oil spill accidents happened. However, governments have not actively participated in the oil spill compensation process because it is a matter of private sectors between the polluter and claimant. The governments have only limited their role in ratifying Civil Liability Convention and Fund Convention and enacted relevant domestic laws. However, the governments of France, Spain, and Korea have actively participated in the compensation process of oil pollution incidents of M/T Erika, M/T Prestige, and M/T Hebei Spirit. This is because they had experiences of unsuccessful compensation in M/T Amoco Cadiz, M/T Agean Sea, and M/T Sea Prince.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.12 no.1 s.24
• /
• pp.61-66
• /
• 2006

It have been known that the probability of occidental happening in towing-barge is higher than that of other merchant vessels. Bemuse the towing-barge is restricted in thier manoeuvring ability due to its towingline. A report from ministry maritime affairs and fisheries said that the rate of collision occident for towing-barge is 40% high than other transport system in sea A number of researches have been carried out to improve the safety policy in the towing-barge sea transportation system by the gorvenment. This study examined the safety status in domestic towing-barge sea transportation system The registration status, safety operational policy and past occidental data were also examined A survey research of experts relating to towing-barge operation also was carried out to fine the detailed of safety status. This study would be applicable to set up safety policy for towing-barge marine transportation system.

• Bulletin of the Society of Naval Architects of Korea
• /
• v.32 no.5
• /
• pp.19-26
• /
• 1995

표면효과익선(WIG : Wing-In-Ground Effect Ship)은 해면 위를 낮게 비행함으로써 표면효과에 의한 양력 증가를 얻게 되어 초고속으로 운행할 수 있는 선박과 항공기의 중간형태의 차세대 해상운송 수단이다. 해면 위에 직접 이.착륙이 가능하기 때문에 별도의 활주로가 필요 없으며 수륙양용으로 사용 가능하다. 연근해 도서지방 관광 및 신선도 유지가 필수적인 신속화물의 수 송에도 사용될 수 있으며 해난사고 구난 및 해양 경비용으로도 사용가능한 해상 운송수단이다. 본 고에서는 표면효과익선의 특징을 간략히 살펴보고 21세기 고속해상운송수단으로 사용될 가 능성에 대한 경제성 검토 및 핵심애로기술을 살펴보았으며 러시아 표면효과익선의 발달과정과 개발된 선종의 특징을 조사하였다.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.7 no.2
• /
• pp.13-22
• /
• 2001

We studied the characteristics of marine casualties within the area under control of Korea National Maritime Police and leeway of drifting vessel. According to 5 years＇(1995~1999) data of casualties, it was found that the occurrence of casualties by fishing boats ranked the highest and a considerable numbers of casualties took place more than 20 miles off the shore. From a result of field experiment of G/T 50 tons vessel off Busan harbor on Apr. 26~28, 2000, we computed that the linear equation of leeway speed(cm/s) was 1.01$\times$U(U : wind speed in m/s)+11.36 with correlation coefficient between wind speed and leeway speed being 0.252 and we found leeway angle range from $+87^{\circ}$(right) to $-78^{\circ}$(left ) of the downwind direction.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2014.06a
• /
• pp.36-37
• /
• 2014

It is necessary to develop highly sophisticated Modeling & Simulation (M&S) system for the scientific investigation of marine accident causes and for the systematic reproduction of accidental damage procedure. To ensure an accurate and reasonable prediction of marine accidental causes, such as collision, grounding and flooding, full-scale ship M&S simulations would be the best approach using hydrocode, such as LS-DYNA code, with its Fluid-Structure Interaction (FSI) analysis technique. The objectivity of this paper is to present three full-scale ship collision, grounding and flooding simulation results of marine accidents, and to show the possibility of the scientific investigation of marine accident causes using highly sophisticated M&S system.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.1 no.1
• /
• pp.1-8
• /
• 1995

해난사고의 발생으로 표류중인 조난선박을 구조하는데 있어서 가장 중요한 작업은 조난선박의 현재 표류위치를 정확하게 추정하는 것이다. 표류지점을 예측하는데 현재 사용되고 있는 방법들은 기본적으로 해류와 바람의 영향을 벡터적으로 합성하여 수색범위를 결정한다. 여기서 해류보다 바람의 영향에 의한 표류(leeway)를 예측하기가 어려운데 leeway는 주로 실물을 이용한 현장실험을 통하여 결정한다. 본 연구에서는 우리나라의 연안용 소형선박을 대상으로 제주 북방해역에서 실제 표류실험을 하였는데, leeway 산출에는 지금까지의 기법과는 달리 표류선박에서 측정된 상대유속과 유향 그리고 상대풍속과 풍향을 사용하였다. 실험자료로부터 산출된 leeway는 풍속의 약3% 부근이며 leeway angle은 자료중 80%가 -65˚에서 -15˚사이였다.

• Journal of the Korean Institute of Navigation
• /
• v.15 no.1
• /
• pp.67-93
• /
• 1991

In general, marine casualities take palace by the composite action of three elements such as waterway condition, vessel condition and man condition. One of the important characteristics of most marie casualties for small cargo vessels in maritime transportation of near-coastal and greater-coasting seas in that the same kind of casualities take place repeatedly in spite of the apprent causes, Because, it takes much time and effort for seamen to master waterway, vessel or operatin technique only to the practical and sensible level. In these days, with the development of our economy, our shiypping industry has grown and therefore the demand of marine officers has increased. This economic growth brought about undesirable situation like the evasion of seamen and frequent casualities of Korea vessels. These marine casualities are being caused mainly by the unskilfulness of operating technique as well as the bad waterway condition and ship's installation condition. Therefore, I conclude, in this paper, that the most efficient and economic preventing measures of marine casualities are seeking causes and removing them in advance under the close coperation system among all concerned parties.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 1998.11a
• /
• pp.428-433
• /
• 1998

국제적으로 개발되고 있는 전자해도는 선박의 대형화 고속화로 인한 각종해난사고의 예방과 급증하는 해상교통을 효율적으로 처리하기 위한 안전항해시스템의 기본데이터로 사용된다. 국제기구인 IHO는 1996년에 전자해도관련 국제표준을 제정하고 각 회원국에 전자해도 개발을 강력히 권고하였으며 이에 따라 국내에서도 국립해양조사원이 1999년 완료를 목표로 전자해도 개발을 추진하고 있다. 전자해도의 개발과정은 기존의 종이해도를 디지틀화 하는 것에서 출발하며 이 과정에서 CIS를 이용한다. 국내에서는 수로데이터의 처리에 강력한 기능을 갖고 있는 CARIS를 사용하여 수치해도를 제작하고 이 데이터를 기본으로 전자해도 데이터를 생성한다. 실제로 종이해도를 스캔한 이미지 파일을 벡터화하고 각종 관련 규약에 맞게 편집하여 수치해도를 제작하며 이를 바탕으로 S-57 기반의 전자해도를 제작한다. 이 과정에서 CARIS는 이미지의 벡터화, 각종 심볼의 입력, 좌표변환, 오브젝트의 입력ㆍ수정등을 수행한다. 본 논문에서는 KRISO가 1995년 말부터 국립해양조사원에서 위탁받아 연구한 전자해도 개발과정과 검수과정을 소개하고 그 과정에서 사용된 CARIS의 활용에 대해 설명한다. 이러한 고찰을 통해 향후 중요하계 다루어질 전자해도의 공급 및 관리시스템의 GIS 활용을 고려할 수 있을 것이다.