INVESTIGATION ON MECHANISM OF TSUNAMI COUNTERMEASURE USING ANCHOR CABLE FOR LARGE MOORED SHIP BASED ON REPRODUCTION SIMULATION OF MODEL SHIP MOTIONS AND MOORING TENSIONS

Abstract

 In this study, an experimental evaluation and reproduction simulations on the tsunami countermeasure using the additional anchor cable for large moored ship have been performed using the model ship as a 90,000DWT class coal carrier suffered by the 2011 Tohoku Earthquake Tsunami, based on revised several water tank tests under tsunami bore as well as our previous study. It was clarified that the slack mooring of the anchor cable as the tsunami countermeasure was restricted under tsunami wave height about 5 meters, and the tesnsion mooring might be considered under higher tsunami wave conditions.