• 해양환경안전학회지
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• 제2권S1호
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• pp.63-73
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• 1996

The assesment of the safety of ship's transit in a curved narrow channl consists of the maneuvering safety determined by the chance of running aground, the maneuvering difficulty determined by shop's workload, and shiphandler's subjective evaluation. In this study to examine the correlation between shiphandler's subjectice evaluation and the maneuvering risk, the real-time and full-mission shiphandling simulator in the Korean Marine Training & Research Institutes(KMTRI) was utilized. In the conning bridge of the shiphandling simulator, 50 experienced masters conducted masters conducted the modeled vessel of 60,000 deadweight tonnage along the designed channel under 3 different envrinmental conditions. The findings were as follows: (1) The frequencies of stress levels, work difficulties, vessel controllability and overall workload of shiphandlers are similar irrespective of environmental conditions and they are able to be represented as shiphandler's subjective evaluation. (2) It is possible to assess and analyze theoretically the correlation between the shiphandler's subjective ecaluation and maneuvering risk each environmental cindition by quantifying the data obtioned from the tests. The results are as follows: ① As the degree of maneuvering risk increases, the shiphandler's subjective evaluation increases sharply near the curvature area of the desgined channel. ② In the area of the curvature of the designed channel, maneuvering risk increases sharply with the danger of running aground under the environmental condition of current and wind comung from the stem.

• 해양환경안전학회지
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• 제2권1호
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• pp.35-45
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• 1996

The assesment of the safety of ship's transit in a curved narrow channel consists of the maneuvering safety determined by the chance of running aground, the maneuvering difficulty determined by ship's workload, and shiphandler's subjective evaluation. In this study to examine the correlation between shiphandler's subjective evaluation and the maneuvering risk, the real-time and full-mission shiphandling simulator in the Korea Marine Training & Research Institutes(KMTRI) was utilized. On the conning bridge of the shiphandling simulator, 50 experienced masters conducted the modeled vessel of 60,000 deadweight tonnage along the designed channel under 3 different environmental conditions. The findings were as follows : (1) The frequencies of stress levels, work difficulties, vessel controllability and overall workload of shiphandlers are similar irrespective of environmental conditions and they are able to be represented as shiphandler's subjective evaluation. (2) It s possible to assess and analyze theoretically the correlation between the shiphandler's subjective evaluation and maneuvering risk under each environmental condition by quantifying the data obtained from the test. The results are as follows : ① As the degree of maneuvering risk increases, the shiphandler's subjective evaluation increases sharply near the curvature area of the designed channel. ② In the area of the curvature of the designed channel, maneuvering risk sincreases sharply with the danger of running aground under the environmental condition of current and wind coming from the stern.

• 한국항해항만학회지
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• 제29권10호
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• pp.833-838
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• 2005

이 논문은 M 방송국이 요청한 $100m{\sim}500m$의 이격거리를 유지하기 위하여 실습선 "한바다"호와 행사지원 선박과의 치소 안전이격거리에 대하여 다룬 것이다. 이 최소안전 이격거리는 조종곤란도를 정량적으로 평가하는 ES Model과 해상교통류 시뮬레이션을 이용하여 평가하였는데 그 결과는 2노트로 항진하는 실습선 "한바다"호의 경우 약 260m이고 이 값을 실제의 값과 비교하였다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2005년도 추계학술대회 논문집
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• pp.5-10
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• 2005

실습선 한바다호는 M 방송국 행사를 지원하기 위하여 선박의 속력이 약 2노트인 선박군과의 적절한 거리를 유지하면서 17시간 이상 안전하게 항행하고자 한다. M 방송국은 한바다호에 방송의 원활한 송수신을 위하여 약 2노트로 이동하는 행사지원 선박군과의 이격거리를 $100m\~500m$로 유지해 달라고 요청하였다. 이에 대하여 한바다호는 약 2노트의 속력을 맞추기 위하여 최소 속력인 극미속 전진($5\~6$노트)과 기관정지를 반복하여 적절한 거리를 유지하고자 한다. 한바다호가 약 2노트로 저속 항해시 행사진원 선박군과의 안전한 최소 이격거리의 검토에 대하여 해상교통류 시뮬레이션을 이용$\cdot$ 평가하여 선박 운항자에게 조선곤란성 등 위험 정보를 사전에 제공하여 안전운항에 도움을 주고자 하였다. 또한, 실제 운항된 한바다호와 지원 선박군과의 이격거리를 조사하여 계산된 최소안전 이격거리와 비교$\cdot$분석하였다.

• 해양환경안전학회지
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• 제3권S1호
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• pp.55-73
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• 1997

It is well known that simulation study in the preliminary design stage of harbors or berths is of great use, since it can provide helpful informations to the designer from the view point of ship navigations. In this paper, a brief review is made in the safety assessment of ship navigation for a 320,000 DWT VLCC entering Yecocheon harbor area, which is carried out by shiphandling simulator system. The geographic data base for the harbor as well as the mathematical models of the ship and environmental effects are designed and developed. Based in the on-site inspections and interviews with pilots in Yeocheon area, basic maneuvering plans and consistence with real operation conditions. Berthing and deberthing maneuvering simulations as well as approaching and departing simulations are carried out by 3 experienced navigators according to the maneuvering plans and environmental scenarios. The simulation results are analysed in various ways to evaluate the quantitative and qualitative maneuvering difficulties and thereby to assess the safety of ship navigation in that area.