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Development of Prediction Program for the Towing Condition Associated with Various Towing Operations of a Disabled Ship

사고선박의 다양한 예인계획에 따른 예인상태 추정 프로그램 개발

  • 김은찬 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 최혁진 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 이승국 (한국해양과학기술원 부설 선박해양플랜트연구소)
  • Received : 2014.07.31
  • Accepted : 2014.10.07
  • Published : 2014.11.25

Abstract

When a disabled ship is being towed in a seaway, the speed and direction of the towed ship are estimated by using the towing force and direction of the selected tug boats at the predicted sea conditions including the wind and currents. In this paper, prediction method at the towing conditions of the various towing operations for a disabled ship are studied. The proposed calculation method suggests firstly the method to import the speed and resistance of the forward direction of the towed ship calculated by the existing computer program, second, the method to calculate the speed and resistance of the towed direction of the towed ship acquired from the selected tug boats at the initial towing conditions and lastly, the method to calculate the speed and resistance of the towed direction for the towed ship at the stable towing conditions. These calculation methods have been applied to the computer program and this program has been approved to be a useful program, capable of appropriately predicting the towed ship's conditions.

해상에서 사고선박을 예인하기 위해서는, 예상되는 바람과 조류 등의 해상상태에서, 선정된 예인선들의 예인력과 예인방향을 이용하여 피예인선의 선속과 방향을 추정하여야 한다. 본 논문에서는 사고선박의 다양한 예인계획에 따른 예인상태 추정 방법을 연구하였다. 기존 전산 프로그램을 사용하여 계산된 피예인선의 정면방향 선속과 저항을 가져오는 방법과, 초기 예인상태에서 선정된 예인선들에 의한 피예인선의 전진방향 선속과 저항을 계산하는 방법, 그리고 안정된 예인상태에서 피예인선의 전진방향 선속과 저항을 계산하는 방법을 제안하였다. 이들 계산 방법은 전산 프로그램으로 구현되었으며, 이 프로그램은 피예인선의 상태를 적절히 추정할 수 있는 유용한 프로그램으로 확인되었다.

Keywords

References

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Cited by

  1. Development of Resistance Prediction Method for the Effect of Drifting Angle at the Towing Operation of a Disabled Ship vol.18, pp.4, 2015, https://doi.org/10.7846/JKOSMEE.2015.18.4.298