• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2010년도 춘계학술대회
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• pp.219-220
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• 2010

A new concept of ocean transport system, called mobile harbor, was introduced as a feasibility study in Korea in 2009. Target of the mobile harbor is a smart distance transport of containers with or without cargo handling cranes. Although the mobile harbor project has a lot of topics to deal with, this paper is to focus on only ship-to-ship stabilized mooring, which plays a key role in cargo handling. The ship-to-ship stabilized mooring system was developed and installed on beard a barge of LOA 32m and breadth 12m. The dockside tests as sea test were carried out so as to ascertain ascertained whether the systems can work well to control the barge's motion. The results of dockside test showed that the heave motion of the barge's motion can be reduced by more than 45%.

• 한국항해항만학회지
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• 제34권4호
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• pp.281-286
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• 2010

A new concept of ocean transport system, called mobile harbor, was introduced as a feasibility study in Korea in 2009. Target of the mobile harbor is a short distance transport of containers with or without cargo handling cranes. Although the mobile harbor project has a lot of topics to deal with, this paper is to focus on only ship-to-ship stabilized mooring, which plays a key role in cargo handling. The ship-to-ship stabilized mooring system was developed and installed on board a barge of LOA 32m and breadth 12m. The dockside tests as sea test were carried out so as to ascertain whether the systems can work well to control the barge’s motion. The results of dockside test showed that the heave motion of the barge's motion can be reduced by more than 45%.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2012년도 추계학술대회
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• pp.160-161
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• 2012

The traditional theory regarding the pivot point of a ship during maneuvering, so called apparent pivot point, is located nearly at 1/3 ship's length from the bow when the ship is moving ahead, and between 1/4 ship's length from the stern and the rudder post when going astern. The pivot point is sometimes considered to be the centre of leverage for forces acting on the ship. However, the pivot point is located out of ship due to strong lateral force, such as current and it is very inconvenient to use during maneuvering a ship. In this paper firstly, pivot points due to ship's condition are investigated carefully. And then the center of lateral resistance used at the present are determined. While a new lateral force is added, we can compare the pivot point with the center of lateral forces. Finally, we will suggest the center of all lateral forces for maneuvering instead of pivot point. Especially, it will be very helpful for pilots to handle ships in simulation.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2016년도 춘계학술대회
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• pp.103-105
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• 2016

신(2015) 등이 발표한 선박 당직 중 스마트폰 사용이 당직수행에 미치는 영향에 관한 선행연구에서 설문조사를 통해 선박에서 스마트폰을 사용할 수 있는 환경(항해 중 36%)이 마련되었음을 확인하였고, 항해사들의 위험도 조사 설문에서 스마트폰 사용이 사용 전보다 약 2배 위험하다고 분석되었다. 본 연구는 일정기간 항해사로 승선 경험을 가진 자들을 실험 대상자로 시뮬레이션을 실시하여 해상교통안전진단상 선박 조종 시뮬레이션 평가 분석 항목인 선박의 근접도 평가, 선박의 제어도 평가, 조종자의 주관적 평가를 기초로 스마트폰의 사용이 항행안전에 미치는 위험도를 평가하였다. 또한 스마트폰 사용 유무에 따른 위험 상황 인지 시간을 측정하여 스마트폰의 위험성을 정량적으로 나타내었다.

• 한국마린엔지니어링학회:학술대회논문집
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• 한국마린엔지니어링학회 2005년도 전기학술대회논문집
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• pp.1041-1046
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• 2005

This paper describes a system for LNG carrier's loading and discharging work education. This system consists of three modules(cargo work simulation, ballast work simulation and loading calculation module), and could be a useful to train mariners boarding on LNG carrier so as to take a suitable action while their ship maneuvering and cargo handling.

• 한국항해항만학회지
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• 제44권6호
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• pp.460-468
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• 2020

최근 자율운항선박(Maritime Autonomous Surface Ship, MASS) 기술개발에 관련 연구들이 활발하게 수행되고 있다. MASS의 핵심 기술 중 하나는 해상에서 항해사를 대신하여 조우하는 선박에 대한 충돌회피기술이다. 기존 자동 충돌회피기술 개발관련 연구들을 조사한 결과, 자동충돌회피기술을 객관적으로 정량화 할 수 있는 평가모델에 대한 연구는 없다. 따라서 본 연구에서는 MASS의 충돌회피 능력을 객관적으로 검증하기 위한 평가모델을 개발하였다. 연구방법은 COLREGs에 대한 전문지식과 실무조선 경험이 많은 선박조종전문가가 Full Mission Ship-handling Simulator(FMSS)를 이용하여 선박 조우형태별 선박조종시뮬레이션을 수행하고 그 결과 데이터를 계측하고 기술 통계 처리하여 것이며, 개발된 평가모델을 통해서, MASS의 운항능력을 정량적으로 평가하고자 하였다. 연구결과, 본 연구에서 개발된 충돌회피 평가모델을 이용하여 해상에서 MASS의 충돌회피 능력을 정량 평가 할 수 있는 것으로 나타났다. 향후 이 모델을 이용하면 자율운항선박의 충돌회피능력을 객관적으로 평가 가능하고 부족한 부분을 수정·보완하는데 이용함으로서 자율운항선박 기술개발에 많은 도움이 될 것으로 사료되며, 또한 항해사의 충돌회피능력 평가에도 도움이 될 것으로 판단된다.

• 한국시뮬레이션학회논문지
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• 제11권4호
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• pp.43-55
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• 2002

Vessel traffic safety management means the managerial technical measures for improving the marine traffic safety in general terms. The main flow of vessel traffic safety management is that: 1) Traffic Survey, 2) Replay by Marine Traffic Flow Simulation, 3) Quantitative Assessment, 4) Policy Alternatives, 5) Prediction·Verification. In the management of vessel traffic safety, it is most important to establish assessment models that can numerically estimate the current safety level and quantitatively predict the correlation between the measures to be taken and the improvement of safety and the reduction of ship handling difficulties imposed on mariners. In this paper, the replay model for traffic flow simulation was made using marine traffic survey data, and the present traffic situation became replay in the computer. An attempt was made to rate the current safety of ports and waterways by applying the Environmental Stress model. And, as a countermeasure for traffic management, by taking of, the promotion of total traffic congestion in early morning rush hour, the correlation between traffic control rate and the reduction in ship handling difficulties imposed on mariners was predicted quantitatively.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2017년도 공동학술발표회
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• pp.79-79
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• 2017

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 2002년도 춘계학술대회논문집
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• pp.21-32
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• 2002

In accordance with the development plans of Ulsan harbor, Ulsan new harbor will be contructed considering supporting Ulsan harbor as a safe berthing and departure at single buoy mooring(SBM). In this study, we used a full-mission ship handling simulator adopting 300,000 DWT VLCC manoeuvered at the planned Ulsan SBM. Five masters who have had a long experience of ship maneuvering were called to carry out the simulations, of which each scenario were tried one, completed total of 68 times. The marine traffic safety was assessed in terms of 1) the closest point of approach(CPA) to other SBM and breakwater in the vicinity and the probability of crossing the restricted area of the closest SBM and fairway limit, 2) subjective evaluation such as the mental burden and the maneuvering difficulty of shiphanders, and 3) the opinions of shiphandlers. From the result of this simulation, we have a conclusion as follows; First, because crude oil berthing angle is so small by current S-OiL Co. crude oil buoy by SK Co. No 3 crude oil buoy different view SK Co. No 3 crude oil buoy and interference of current KNOC crude oil buoy, Berthing is impossible, and Emergency departing is very dangerous too operation impossible. Second it is desirable that SK Co. No 2 and No 3 Single buoy Mooring that do different view controls position so that to be not put in straight line each other. Third, SK Co. No 1 and 2 single buoy mooring that do different view to Onsanhang berthing and departing is seized by single buoy mooring by external force ship that set sail does faith control need.

• 해양환경안전학회지
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• 제15권1호
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• pp.57-62
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• 2009

예부선 운항 시 부두의 접안, 이안 및 좁은 수로를 항행할 경우 접할 수 있는 안벽 근처의 항행과, 두 선박이 접근하여 평행 항로상을 반대 방향으로 항과할 경우의 유체력 상호작용을 살펴보기 위하여, 예선의 부선 예항 시뮬레이션을 실시한 후 부선의 선수방향, 예선의 회두 모멘트와 횡방향의 힘과 같은 특성을 조사 및 분석하여 그에 따른 안전한 예부선의 조선 방안을 제시하였다. 그 결과 부선의 과도한 회두운동을 감소시키기 위해서는 예선의 속도가 너무 느리지 않도록 미속상태의 속도를 유지하고, 예인삭의 길이를 가능한 한 부선의 길이만큼 줄여 항행하는 것이 안전예항 업무에 도움이 될 것으로 판단된다.