초기 설계된 Ship-to-Ship 계류시스템에 의한 FLBT 유체역학적 특성 변화에 대한 실험적 연구

Abstract

As the demand of fuels has been increased steadily, a LNG fuel is regarded as one of powerful candidates to provide stable energy supply with less environmental damages. In order to import and export LNG abroad, a LNG terminal needs to be constructed. FLBT(Floating LNG Bunkering Terminal) is an infrastructure which can either save a LNG fuel received from a LNG Carrier, or inject the LNG fuel into a LNG BS(Bunkering Shuttle) while it is moored at a certain working site sea. It separates the danger of explosion from resident areas, and it does not need for existing infrastructures to be changed. With these circumstances, KRISO(Korea Research Institute of Ships and Ocean Engineering) has conducted a national R&Dproject, ‘Development of Technology for Floating Offshore LNG Bunkering System’ with several domestic institutes and companies. In this study, we performed a series of experiments on the motion responses of FLBT, LNGC and two LNG BSs, and the structural responses of Ship-to-Ship(STS) mooring systems in regular waves. The first experiments were conducted while operating vessels were located in close proximity and moored with soft springs individually. Then the STS mooringsystems were installed at operating vessels and we conducted the same experiments. The influence of STS mooring systems were identified by comparisons of two experimental cases in terms of motion RAOs and drift forces. Also, tensions of STS