• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2014.10a
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• pp.313-315
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• 2014

해상에서 통항선박의 위해요소로서 간출암, 노출암 등이 우리나라 해안에 많이 분포되어 있으며, 특히 간출암은 조수의 간만의 차에 따라 해상 이용자(어민 등)들에게 사고의 위험에 항상 노출되어 있다. 간출암 크기가 등표 설치가 곤란한 곳을 대상으로 해상교통환경 위해요소(간출암) 제거사례 및 고려사항에 대하여 연구하였다.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.34 no.6
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• pp.247-257
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• 2022

In order to investigate the generations of rip currents modulated with the tidal elevations at a mega-tidal beach at the West Sea coast, numerical simulations of rip currents over the topography of the Daecheon beach were performed by using a Boussinesq-type wave and current model, FUNWAVE. The mega-tidal coast includes rocky outcrops (i.e., reefs) lying over or under the water surface according to the tidal elevations in the offshore and nearshore bathymetry. The offshore topographically-controlled rip currents were well reproduced due to the alongshore non-uniformities transformed by the tide-modulated topography. This study addressed the generation types of rip currents to occur at the mega-tidal coast with the tide-modulated outcrops and reefs.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2014.10a
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• pp.362-363
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• 2014

항로표지는 선박의 안전한 항해를 도와주는 해상 교통에 매우 중요한 시설이다. 등대(무인등대, 등표)는 야간에 등화로 항로의 안전 수역과 암초 등 장애물의 위치를 표시하기 위하여 무인 섬이나 간출암 등에 설치하는 구조물이며, 해상이라는 특수적인 운용환경으로 인하여 높은 수준의 신뢰성과 안정성이 요구된다. 무인등대용 풍력발전기는 강한 바람에도 발전기가 파손 되지 않고 운영 될 수 있도록 내구성이 있어야 하나 설치운영 결과 해상의 기상악화, 돌풍, 해풍 등에 의한 잦은 파손 및 고장 발생으로 이에 대응할 수 있는 제품 개발이 필요하다.

• Journal of the Korean Society of Marine Environment & Safety
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• v.28 no.4
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• pp.533-541
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• 2022

An analysis of marine accidents that occurred in the last five years, revealed that 77.0 % of all grounding accidents and 66.1% of all marine casualties involved small vessels, which was a very high level relatively. The Mokpo Regional Maritime Safety Tribunal (Mokpo-KMST) inquired on 72 cases of marine accidents in 2021, of which 10 cases were grounding accidents. Furthermore, eight cases of grounding accidents occurred in small fishing vessels. This study analyzed eight cases of grounding accidents on small fishing vessels that inquired in the jurisdictional area of Mokpo-KMST in 2021. I found out that this grounding occurred in clear weather with good visibility (2-4 miles) and good sea conditions with a wave height of less than 1 meter. Furthermore, I found that the main causes of grounding were drowsy navigation due to fatigue, neglect of vigilance, neglect of checking ship's position, overconfidence in GPS plotter, and lack of understanding of chart symbols and tidal differences. To reduce grounding accidents of small fishing vessels, I suggested the following measures. First, crew members who have completed the able seafarer training course on bridge watchkeeping should assist to the master. Second, alarm systems to prevent drowsiness should be installed in the bridge. Third, the regulation should be prepared for the performance standards and updating GPS plotter. Finally, the skipper of small vessels should be trained periodically to be familiar with chart symbols and basic terrestrial navigation.