Experimental Investigation on Global Responses of a Large Floatover Barge in Extremely Shallow Water

Xiong, Lingzhi (Shanghai Jiao Tong University) | Lu, Haining (Shanghai Jiao Tong University) | Yang, Jianming (Shanghai Jiao Tong University) | Zhang, Wei (Offshore Oil Engineering Co., Ltd, Engineering Company) | Yang, Guang (Offshore Oil Engineering Co., Ltd, Engineering Company)

OnePetro 

Abstract

Floating vessels moored in shallow water are at risk of possible bottom grounding and collision between the vessel and the subsea pipelines. Their dynamic responses are of great concern in offshore engineering. In this study, experiments were conducted to investigate the motion response of a large floatover barge moored in ultra-shallow water. White noise wave tests with five different incident angles were carried out in four different water depths. Shallow water effects were observed in the experiment. The motion characteristics of the moored barge in shallow water were also clarified in the analysis. The barge motions in the horizontal plane and the mooring line tensions increase with the decrease of the water depth, while the heave and pitch motions reduce. Results obtained from this study were provided to support the floatover installation operation.