J Navig Port Res > Volume 44(6); 2020 > Article
Journal of Navigation and Port Research 2020;44(6):439-446.
DOI: https://doi.org/10.5394/KINPR.2020.44.6.439    Published online December 31, 2020.
실험 및 수치해석을 통한 LNG 벙커링 선박들의 이접안 안정성 평가 연구
정성준1, 오승훈1, 정동우2, 김윤호3, 정동호4
1선박해양플랜트연구소 선임연구원
2선박해양플랜트연구소 선임기술원
3선박해양플랜트연구소 선임연구원
4선박해양플랜트연구소 책임연구원
Experimental and Numerical Study of Berthing and Unberthing of LNG-Bunkering Vessels
Sung-Jun Jung1, Seung-Hoon Oh1, Dong-Woo Jung2, Yun-Ho Kim3, Dong-Ho Jung4
1Senior Researcher, Korea Research Institute of Ships and Ocean Engineering, Daejon, Korea
2Senior Engineer, Korea Research Institute of Ships and Ocean Engineering, Daejon, Korea
3Senior Researcher, Korea Research Institute of Ships and Ocean Engineering, Daejon, Korea
4Principal Researcher, Korea Research Institute of Ships and Ocean Engineering, Daejon, Korea
Correspondence:  Sung-Jun Jung, Tel: 051)604-7827, 
Email: jungsj@kriso.re.kr
Received: 10 August 2020   • Revised: 19 August 2020   • Accepted: 12 October 2020
Abstract
The IMO has adopted emission standards through Annex VI of the International Convention for the Prevention of Pollution from Ships (MARPOL) that strictly prohibit the use of bunker C oil for vessels. In this study, we have adopted the turret-moored Floating LNG-Bunkering Terminal (FLBT) which is designed to receive the LNG from LNGCs and transfer it to LNG-bunkering shuttles in side-by-side moored condition. Numerical analyses were carried out using the high-order boundary-element method for four vessels at various relative distances. Mean wave drift forces were compared in an operational sea state. A model test was performed in the ocean engineering basin at the Korea Research Institute of Ships & Ocean Engineering (KRISO) to verify the safety of the berthing/unberthing operation. In the model test, a jig was designed to simulate tug boats pushing or pulling the bunkering vessels, so that the friction force of the g operation was not affected. Safety depended on the environmental direction, with more stable operation possible if the heading-control function of FLBT is applied to avoid beam-sea conditions.
Key Words: Floating LNG-Bunkering Terminal (FLBT), LNG bunkering, berthing and unberthing, model test, tug boat


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