Abstract
This paper proposes a large-scale floating coal transshipment station (LFTS) for loading, storing, and offloading coal. This paper discusses LFTS static stability and its elastic deformation characteristics during coal loading operations. It will act as a relay base for barges and bulk carriers. Installing an LFTS offshore from East Kalimantan is expected to improve coal transport productivity in Indonesia. The proposed LFTS can have a total storage capacity of 500,000 tons, and size was set to 590 m × 160 m. In this study, due to the compartments, coal loading conditions can vary significantly and affect the local static deflection, so we modeled the overall deformation and rigidity under various operational scenarios. The results were compared to the allowable material stress to identify conditions that will produce material failure. Moreover, we evaluated operation in the shallow Kalimantan River, since the weight of loaded coal deepens the LFTS draft, reducing the clearance between the LFTS and sea bed. We found that this reduced clearance and large added mass impact the natural frequency of the LFTS. The natural frequency exists in the low frequency band, and tuning with the wave is also expected, and we tried to grasp the influence of the coal loading conditions on the vibration characteristics of the LFTS.
