• 한국항해항만학회지
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• 제37권6호
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• pp.567-574
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• 2013

Although Korea coastal area has the increasing potential marine accident due to frequent ship's encounter, increased vessel traffic and large vessel, there is no specific model to evaluate the navigating vessel's risk considering the domestic traffic situation. The maritime transport environmental assessment is necessary due to the amended maritime traffic law. However, marine safety diagnosis is now carried out by foreign model. In this paper, therefore, we suggest a domestic traffic model reflecting the characteristics of korea coastal area and navigator's risk as we named PARK(Potential Assessment of Risk) model. We can evaluate the subjective risk by establishing the model and model output into maritime risk exposure system. To evaluate this model's effectiveness, we used ship handling simulation and applied, analyzed collision accident which occurred in korea coastal area. And also, we applied integrated to an ECDIS program for monitoring traffic risk of vessels with real time based AIS data and apply to evaluate traffic risk in busan harbor waterway. As a result, we could evaluate busan harbor waterway risk effectively.

• 대한조선학회논문집
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• 제37권2호
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• pp.46-56
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• 2000

본 논문은 손상선박의 안전대책에 관한 연구의 일환으로, 황천항행중인 선박이 충돌, 좌초 등 원인에 의해 손상을 받았을 때를 가상하고, 손상선박을 다른 안전한 장소로 예항하고자 할 때의 침로안정성 문제를 다루고 있다. 외력으로는 바람의 영향만을 고려할 때, 예선 피예선계의 침로안정성 평가를 위한 특성방정식을 도출하고, 피예선의 각 손상상태에 따른 침로안정성을 수치계산하였다. 그 결과 손상상태, 풍속, 풍향 및 예항삭의 길이 등이 침로안정성에 미치는 영향을 평가할 수 있었다.

• 수산해양기술연구
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• 제40권2호
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• pp.144-148
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• 2004

해저에 설치된 파이프에서 분출되는 기포에 의해 형성된 강한 수평압력분포를 이용하여 선박을 신속 하고 정밀하게 유도, 정박시키는 도선시스템으로 항구, 협수로, 해협 등과 같이 복잡한 수상, 수중 장애물 지역에서 선박을 신속하고 정밀하게 유도함과 동시에 협소한 부두에 안전하게 선박을 정박시키기 위하여 본 도선 시스템을 고안하였다.

• Journal of Information Technology Applications and Management
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• 제30권6호
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• pp.69-80
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• 2023

Ship collision accidents not only cause loss of life and property damage, but also cause marine pollution and can become national disasters, so prevention is very important. Most of these ship collision accidents are caused by human factors due to the navigation officer's lack of vigilance and carelessness, and in many cases, they can be prevented through the support of a system that helps with situation awareness. Recently, artificial intelligence has been used to develop systems that help navigators recognize the situation, but the sea is very wide and deep, so it is difficult to secure maritime traffic datasets, which also makes it difficult to develop artificial intelligence models. In this paper, to solve these difficulties, we propose a method to build a dataset with characteristics similar to actual maritime traffic datasets. The proposed method uses segmentation and inpainting technologies to build a foreground and background dataset, and then applies compositing technology to create a synthetic dataset. Through prototype implementation and result analysis of the proposed method, it was confirmed that the proposed method is effective in overcoming the difficulties of dataset construction and complementing various scenes similar to reality.

• 대한인간공학회지
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• 제30권1호
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• pp.251-257
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• 2011

When designing a ship, ergonomic considerations are crucial when minimizing a navigator's fatigue due to the burden of work, and to appropriately operate the navigational equipment for each given situation by helping the operator to understand the surroundings as well as the physical functions of the ship. However, insufficient consideration of ergonomic elements in the actual design of ship Bridges is lowering the performance of safe navigation and allows for the possibility of operation or readout errors. Consequently, these errors lead to an increase in maritime accidents. Therefore, this study conducted a usability evaluation on the importance of and the usage frequency of navigational equipment, their influence on actual navigation, and the possibility of error upon operation or readout between training ship officers, to derive an optimized layout that includes the consideration of ergonomic factors for on-Bridge navigational equipment, which are currently arranged differently according to their type or size. The optimized layout of on-Bridge navigational equipment was carried out based on the evaluation results, using the Lingo program. Through the process of optimization, revised layouts of on-Bridge navigational equipments(control and display device) were suggested, considering emergency situations(ship collision, stranding, fire and explosion, sinking, etc.) during navigation.

• 해양환경안전학회지
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• 제21권3호
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• pp.259-265
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• 2015

It is clearly understood that e-navigation is beneficial to prevent collision and grounding of ships. The purpose of this study is to define and present a future ship operation system under the e-navigation environment in order to provide clear direction for the design of Korean e-navigation system. The future ship operation system consists of shipboard navigational system, shore supporting system and maritime communication system. To achieve the objectives of this study, the ship operation system was discussed separately into SOLAS ships and non-SOLAS ships in this study. In SOLAS ships, mariners become a system manager, choosing system presets, interpreting system output, and monitoring vessel response. In small ships and fishing vessels, mariners may enjoy their navigation by using the automatic tracking of ship's position on the portable electronic chart display. The improved bridge design, integrated and harmonized navigational system and single window reporting will reduce significantly the administrative and physical workload of mariners. Mariners can concentrate their attention more on navigational duty under the e-navigation environment. To build an effective Korean e-navigation system, the essential navigational functions and e-navigation services for small ships and fishing vessels must be identified and developed taking into account user needs.

• 한국전산구조공학회논문집
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• 제35권2호
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• pp.93-100
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• 2022

본 논문에서는 한국의 서남해상에 건설예정인 해상풍력발전타워의 지지구조물로 고려되고 있는 세발구조와 자켓구조의 선박충돌 거동을 비선형동적해석을 통하여 비교·분석하였다. 이 구조물은 3MW용량의 풍력타워를 지지하기 위하여 설계되었다. 두 지지구조는 쉘요소를 이용하여 비선형 거동을 고려할 수 있도록 모델링하였고, 발전기를 포함하는 상부의 타워구조물은 탄성재료를 이용하여 보요소와 집중질량으로 모델링하였다. 전체 질량은 세발구조가 자켓구조에 비하여 약 1.66배 정도였다. 바지선과 상선을 충돌선박으로 선정하여 모델링하였다. 조수차의 조건을 고려하여 충돌선박의 충돌위치를 평균해수면의 상하로 3.5m변동하는 것으로 고려하였다. 또한 각 선박의 최소충돌속도(=2.6m/s)에서의 충돌에너지를 각각 4배까지 증가시키면서 충돌거동을 산정하였다. 해석결과 지지구조 충돌부위의 강성이 클수록 선박의 소성에너지 소산량이 상대적으로 증가하였다. 충돌조건에 따라 풍력타워의 변형은 진동에서 붕괴까지 발생하였다. 세발구조가 자켓구조에 비하여 큰 충돌저항력을 보였다. 이는 중앙부에 강성이 집중된 구조적 특성과 상대적으로 많은 강재의 사용량에 기인한 것으로 판단된다.

• 한국지능시스템학회논문지
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• 제23권3호
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• pp.220-225
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• 2013

항구 등 선박교통이 밀집된 구역에서 선박의 사고는 빈번하게 발생한다. 해양사고는 한번 발생하면 대형사고로 이어질 확률이 높으므로, 철저한 해상교통관리가 필요하다. 본 연구에서는 실 해역의 통계적인 해상교통정보와 실시간 선박 통항분포를 바탕으로 항로 위험도를 정량적으로 평가하기 위한 시뮬레이터를 개발하고자 한다. 항로 위험도 평가 시뮬레이터는 항로정보 입력부, 통항분포 분석부, 알고리즘 실행부로 구성하였다. 또한 완도해역의 해상교통정보를 시뮬레이터에 적용하여 항로의 정량적인 항로 위험도를 산출하고자 한다.

• 대한조선학회논문집
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• 제29권2호
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• pp.92-102
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• 1992

선박의 충돌사고시 선수구조의 충격에너지 흡수능력의 추정은 피충돌선박 또는 해양구조물의 충돌에 대응하는 구조설계에 중요하게 이용될 수 있다. 본 연구에서는 복잡한 선수구조의 충돌에 대한 파손량의 추정을 위하여 선수구조를 에너지흡수 단위구조인 기본 요소들로 구분하고 각각의 요소에 대한 압괴강도를 추정할 수 있는 이론식을 제안하였고, 이를 실험 결과들과 비교하여 유용성을 검증하였다. 또한, 이 단위 구조요소들의 에너지흡수 추정식을 조합하여 선수구조와 같이 복잡한 구조에 적용할 수 있는 간이한 식을 유도하였다. 한편, 이러한 과정을 복잡한 구조의 파손해석을 수행할 수 있는 컴퓨터 코드를 개발하였고, 이를 선수구조 모델의 압괴실험 결과에 적용하여 만족할 만한 결과를 얻었다.

• 수산해양기술연구
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• 제55권2호
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• pp.152-161
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• 2019

This research carried out a study on the job characteristics of the skipper of the coastal composite fishing vessels in order to find a way to prevent the ship collision caused by the highest human error among the marine casualty of fishing boats. Video observation was used as the research method in which six CCD cameras were installed on the vessel to collect image data and data extracted from the image were analyzed to derive the results of the functional activity of skipper according to the fishing operation process of experimental fishing vessel. The results are as follows. The working process of the experimental fishing vessel consisted of navigation for fishing ground, setting line, waiting for hauling line, hauling line and navigation to homeport. In these processes, the skipper was performing watchkeeping in the wheelhouse in which he carried out a single task, a dual task that performed two tasks simultaneously, and a triple task that performed two or more tasks simultaneously. In addition, one of the risk factors causing the collision was a no watchkeeping in the wheelhouse for navigating for fishing ground, waiting for hauling line, and hauling line at 25.4%, 64.6% and 0.3%, respectively among the marine casualty while drowsiness caused 1.2% of the marine casualty in navigating for fishing ground. Concurrent tasks that simultaneously perform two or more tasks that can overlook any other important duties while carrying out watchkeeping in the wheelhouse include 51.3% of navigation for fishing ground, 81.9% of setting line, 19.0% of waiting for hauling line, 87.9% of hauling, and 88.7% of navigation to homeport. The above concurrent tasks yielded an average of 66.1%. Experimental fishing vessels are required to focus on ship handling operations related to fishery operations, and the skipper is assigned more activities and attention to fishery related tasks. Therefore, it is considered desirable to build a collision prevention system that is appropriate to the characteristics of the skipper's work, escaping from transferring the responsibility of ship collision to the skipper completely.