• Journal of Navigation and Port Research
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• v.43 no.6
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• pp.420-428
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• 2019

Although marine structures are a risk factor interfering with the passage of ships, there are no obvious guidelines on the required safety distance between ships and marine structures under regulations and laws. In this study, the width of the shipping route width was set based on the AIS data to analyze the separation distance between marine structures and ships, and the ships were classified by the length of each ship. By analyzing the distribution at marine structures, this study confirmed that the ships' traffic volume was in the form of normal distribution. To statistically analyze the separation distance between the traffic distribution results and the normal distribution of ships in this study, the traffic pattern analysis around the marine structures was performed. As a result, the traffic pattern was different by length and the recommended safety distance for each length is presented accordingly. Referring to the IMO (International Maritime Organization) the standard turning circle and reference of safety separation distance between ships and offshore wind turbines of the CESMA (Confederation of European Shipmasters' Associations) and P IANC (World Association for Waterborne Transport Infrastructures), the analysis was conducted on ships that did not follow the set distance among the AIS data by setting the distance within the recommended ship safety distance to 5-7 overall length. As a result, the 5.5 length over all of the safety recommendations were selected as appropriate, and based on the above results, the two cases recommending ship safety distance were proposed.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2007.12a
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• pp.293-295
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• 2007

해상교량의 규모 결정을 위한 선박조종시뮬레이션 표준시행 조건 및 기법(대상선박 설정, 시나리오, 시행회수, 평가기법 등)을 정립함으로써 해상교량 통항 안전성을 평가하는데 정책 결정의 혼선을 최소화 할 필요가 있다. 본 연구에서는 과거 수행된 선박조종시뮬레이션 관련 보고서 분석 및 평가를 기초로 선박조종시뮬레이션 표준안에 대한 공통점을 도출하여, 국내 선박조종시뮬레이터 보유기관 항만 이용자 및 항만 건설 관계자 등의 의견 수렴과정을 거쳐 수정 보완함으로써 선박조종시뮬레이션의 대상선박, 수행 조건, 평가기법, 시나리오 설정 등에 대한 최종 표준안을 제시한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2014.10a
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• pp.128-130
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• 2014

우리나라 연안해역에는 약 11개의 주요 해상교통흐름이 존재하고 있다. 또한 세계 5위의 컨테이너 처리항만이 있으며 삼면이 바다로 둘러싸여 있어 항행선박의 통항이 빈번하고, 선박통항의 교차지점이 다수 발생하여 해양사고 발생 잠재성이 상존하고 있다. 이러한 해역에서 속력 및 기관성능시험 등을 수행하는 6천톤 이상의 시운전선박의 통항패턴은 예상하기가 쉽지 않고 일반적인 교통흐름과 상이하여 타선박의 오인 야기로 충돌위험이 잠재되어 있다. 이러한 중대형 시운전선박이 우리나라에서 어느 정도 존재하고 있는지에 대한 운항 현황을 살펴보고, 이러한 운항시 안전을 저해하는 위험요소를 설문조사를 기반으로 하여 분석 시운전 선박의 안전운항을 위한 기초연구로 하고자 한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.11a
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• pp.7-8
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• 2022

국내 해상풍력발전단지가 증가함에 따라 소형선박의 단지 내 위험통항이 증가하고 있으며, 제한된 시계 또는 야간항해 시 해양풍려발전단지 부근을 항해하는 선박들의 안전항행 우도 및 해양풍력단지 시설물 보호의 필요성이 높아지는 등 해상풍력발전단지 내 항로표지가 중요한 의미를 갖게 되었다. 이 연구에서는 국제항로표지협회의 권고안과 주요국가의 국내규정 그리고 국내관련 규정을 비교·분석하여 항로표지의 기능 및 규격에 관한 기준의 개정방안을 제시하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2011.06a
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• pp.114-116
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• 2011

해상교통 관제 서비스는 해상교통량의 폭주, 위험화물의 증가와 잠재적인 환경오염의 위험 등에서 항만의 안전 또는 항만운영 효율성 제고하기 위해 실시하는 통항서비스로 VTS 구역 내에서 주변상황 및 해상교통상황을 적시에 제공하여 선박에서 항해의사 결정과정에 도움이 될 수 있도록 정보서비스 등을 제공하고 있으며 실제로 안전한 해상교통에 많은 도움을 주고 있는 것이 사실이다. 우리나라 전 연안 및 항만에서 운영하고 14개소의 VTS 및 연안 VTS 서비스를 제공하고 있다. VTS 관제사는 선박운항자와 마찬가지로 관제하고 있는 항만이나 연안의 지형적 특성에 따라 선박의 안전한 운항을 위해 선박과 선박 사이 및 선박과 육지(장해물)와의 최소안전거리를 두고 관제를 하고 있다. 본 연구에서는 우리나라 각 VTS 관제사들이 관제하는 안전이격거리를 개인별로 조사함으로써 VTS 관제사간의 안전이격거리를 조사함에 그 목적이 있다. 설문조사 결과 같은 VTS 소속임에도 불구하고 개인별로 관제하는 최소안전거리가 많은 차이가 있음을 확인할 수 있었다.

• Journal of the Korean Society of Marine Environment & Safety
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• v.27 no.6
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• pp.775-782
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• 2021

The Myodo-Strait at Yeosu Port is normally used as a major vessel passage for dangerous cargo carriers that carry regular products of dangerous goods. Currently, the Myodo-Strait allows only single passage, and the speed of passage is also limited to 8 knots. As a result, demurrage at the wharf of hazardous goods are also on the rise. It is expected that the development of a number of dangerous commodity wharf in the future will increase the volume of vessel traffic and increase the number of vessels used in the project area. Therefore, it is urgent to improve the waterway in order to secure the safety of ships using the waterway and improve the demurrage. This study proposed an improvement plan for the waterway through the analysis of the marine environment of the waterway and the process of collecting opinions from users in the sea area. and it was finally proposed to expend the width of the strait to 300m and secure a depth of 9.50m through Guidelines of Port and Harbor Design review and ship handling simulation evaluation. In addition it was evaluated that the vessel traffic congestions at peak-time in the situation of solo passage was greatly improved from 71.01% to 47.3% even when it was allowed to ship's crossing passage, as a result of vessel traffic congestions evaluation. According to the proposed improvement plan, the safety of ships' passage in the project area can be secured, and the issue of demurrage was also considered to be improved.

• Journal of the Korean Society of Marine Environment & Safety
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• v.26 no.4
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• pp.309-316
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• 2020

Waterway design should prioritize appropriate channel width to ensure preferential safe passage for the arrival and departure of vessels. To calculate the minimum channel width required for safe passage a comprehensive review of several factors is required. These factors include vessel maneuverability, determined by vessel size, type and speed; environmental factors such as wind, tide, and wave action; human factors, including personal experience and operator judgment as well as marine traffic and navigation support facilities for decision making. However, the Korean channel width design standard is based only on vessel length, and requires improvement when compared with the standards of PIANC, USA, and Japan. This study aims to estimate the appropriate channel width required for one-way traffic in a straight channel, considering various vessel and environmental factors, using Fast Time Simulation (FTS). When the wind speed is 25 knots, with a current speed of 2 knots and a normal vessel speed of 10 knots FTS shows that a 150K GT Cruise Ship requires a minimum channel width of 0.67-0.91 the vessel length (L), whereas a 120K TEU Container Ship and a 300K DWT VLCC require 0.79-1.17 and 1.02-1.59, respectively. Such results can be used to calculate the minimum channel width required for safe passage as an improved Korean design standard.

• Journal of the Korean Society of Marine Environment & Safety
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• v.13 no.1 s.28
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• pp.55-60
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• 2007

Many electric power cables span the sea in Korean archipelago. Lots of shipping routes were established between the islands in the same area and ships frequently sail under the cable which cross the seas. Sometimes electric power cables were accidently broken by sailing ships and catastrophic damage of island industry followed thereby. If navigators have detailed knowledge about the height of electric power cable, the ship's sailing condition will be greatly improved. But at the present time, navigators have limited data about the electric power cable. Those are the horizontal distance between pylons, the height of pylons and minimum height of electric power cable. This study introduced the calculating methodology to find out the height of cable at any position between pylons. The ship's tracks were recorded and traffic safety was assessed by statistical method in relation to cable height.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.10a
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• pp.217-218
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• 2012

국토해양부 해상교통안전진단 시행지침에는 안전진단 항목으로 해상교통현황조사 및 측정, 혼잡도 분석, 선박조종시뮬레이션에 의한 통항 및 접이안 안전성 평가, 계류안전성 평가 등을 명시하고 있으며, 각 진단 항목별로 평가 방법 및 기준을 제시하고 있다. 해상교통안전진단 수행과정에서 이러한 평가 방법 및 기준에 대한 개선 방안 등을 고찰하였다.

• Journal of the Korean Society of Marine Environment & Safety
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• v.22 no.6
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• pp.660-670
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• 2016

This study expresses the necessity of recognizing Pyeongtaek Port as a specific traffic safety area to ensure the safety of the vessels that navigate there using quantitative data. The number of foggy days, pilotage distance, the number of large vessels and the number of fishing vessels that traveled between Pyeongtaek Port and 6 ports chosen as comparative study objects were compared and analyzed. The results showed that Pyeongtaek Port was more frequently affected by restricted visibility. With these perverse conditions, Pyeongtaek Port has a longer pilotage distance than Busan, Busan Newport, Ulsan or Pohang Ports by as much as 3.5-6 times. Especially from May to July, when fisheries were most functional, large vessels were required to navigate in an opposite direction to avoid 35 fishing vessels that were observed, creating an increased possibility for collisions among vessels. Therefore, the navigational safety of Pyeongtaek Port should be further secured by defining the approaching waters as specific traffic safety areas, giving large vessels legal priority over fishing vessels.