Integrated approach to assess resonance between basin eigenmodes and moored ship motions with wavelet transform analysis and proposal of operational thresholds

Waves with periods between 25 s and some minutes can amplify the motions of moored ships, which may result in terminal downtimes compromise safety. The purpose this work is twofold: (i) studying infragravity waves their influence on ship motions, including definition operational thresholds (ii) developing a novel integrated approach to identify assess resonance situations using wavelet transform analysis. resonant modes harbor basin were identified numerical model validated full-scale data. five similar LPG vessels at two adjacent jetties analyzed, both frequency frequency–time domains. It was concluded that surge most important motion berth has greater problems. Moreover, vary mooring line pretension are proportional ratio water depth vessel draft. Three episodes breaking attributed large oscillations. In addition, for basin-vessel defined based port tide gauge A significant wave height 0.075 0.010 m 30–65 period band established LPGs oil tankers, respectively.