Journal of the Korean Society for Marine Environment & Energy (한국해양환경ㆍ에너지학회지)

The Korean Society for Marine Environment and Energy (한국해양환경•에너지학회)
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Observation and Analysis of Movement Characteristics of Drifting Ships

표류선박 거동특성 관측 및 분석

  • Lee Moonjin (Korea Research Institute of ships and Ocean Engineering, Korea Ocean Research and Development Institute) ;
  • Kang Chang-gu (Korea Research Institute of ships and Ocean Engineering, Korea Ocean Research and Development Institute) ;
  • Yun Jong-hwui (Department of Maritime Police, Korea Maritime University)
  • 이문진 (한국해양연구원 해양시스템안전연구소) ;
  • 강창구 (한국해양연구원 해양시스템안전연구소) ;
  • 윤종휘 (한국해양대학교 해양경찰학과)
  • Published : 2005.02.01
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Abstract

The movement of drifting ships on the sea is closely related to marine environmental forces such as waves, currents, winds, etc. To develop a prediction model for trajectories oi drifting ships, an experiment on the movement of drifting ships was carried out in the Southeastern Sea of Korea. Five types of ships including a lire raft and tour ships with G/T 10tons, G/T 2o tons, G/T 50 tons, and G/T 80 tons, were considered in the experiment. The G/T 50 ton class ship was used as a base ship for obtaining the currents, winds and heading angles of ship following the trajectory. The trajectory of each ship was measured by DGPS(Differential Global Positioning System) and collected using APRS(Automatic Position Reporting System) installed on the base ship. The error range in position fix of DGPS are approximately ±1 m. The drift speed of ship in the experiment was between 3％ to 5％ of wind speed and drift direction of ship was deflected by ±90° from wind direction. Also, the heading of drifting ship was normal to wind direction.

해난사고에 의한 선박 표류시 신속한 수색 구조를 지원하기 위한 실시간 표류선박 위치추정시스템 구축의 기초연구로서 실제 해상에서의 선박 표류 거동을 관측하였으며, 환경외력조건에 대한 선박의 규모별 거동특성을 분석하였다. 본 연구의 실험에서는 G/T 10톤급 선박, 20톤급 선박, 50톤급 선박, 80톤급 선박 그리고 구명정(life raft)등 5종류의 선박을 대상으로 하였으며, 표류선박의 위치는 DGPS(Differential Global Positioning System)와 VHF 무전기를 이용한 자동위치발신기(APRS: Automatic Position Reporting System)를 자체 제작하여 측정하였다. 표류 대상선박 중 GH 50톤급 선반에서는 위치 측정과 동시에 표류 경로상의 해수유동, 바람, 선수각(Heading angle)등도 함께 측정하였다. 본 실험의 모든 관측에서 시간간격은 1분으로 동일하게 적용하였다. 실험결과에서 표류선박은 풍속의 3％∼5％의 속도로 표류하는 것으로 나타났으며, 표류방향은 풍향의 법선방향으로 나타났다.

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