Development of recommendations for choosing the design ice impact velocity for regulation of ice loads on moored ship-shaped structures
Local loads induced by drifting ice on moored ship-shaped structures are considered. Ice loads on turret-moored structures can be determined using the same algorithm and software as in the case of ice class ships, however the ice impact velocity should be specified taking into account elasticity of mooring lines and oscillating motions of the structure interacting with a drifting ice sheet. The paper presents an algorithm developed for evaluation of ice loads on a moored structure, which includes the elasticity of mooring system, with calculations illustrated by case studies.This method provides for more accurate estimations of ice loads on moored structures during interaction with drifting ice sheets. The calculations by this method could be used in the design of moored ship-shaped structures.