engleski

Operability Estimation of Adriatic Sea Port Outside Berth

The ship moored in or outside the harbour is disturbed by irregular waves and also by the waves generated by the ship entering or leaving the port. The motion analysis of moored ships is very important factor to consider the berth efficiency during year. The solution methodology consists of modelling a ship as panel model used to calculate the hydrodynamic loads and responses from potential theory. The mooring lines are modelled by ship to ground spring elements. The stiffness of those elements is accumulated into the global restoring matrix for the rigid body equation of motion. The system of obtained differential equations is solved by frequency domain procedure taking explicitly into account the influence of shallow water. The effect of irregular waves is taken into account by appropriate wave spectrum and ship-generated waves characteristics are obtained by empirical relations. Illustrative applications of the method are given for a two ferryboats and one cruiser moored on the outside of Adriatic Sea harbour jetty. The irregular sea is described by the Tabain spectrum. The results are presented as significant values of the ship ramp motion compared with specific criteria limit.

ship mooring; ship motion; terminal operability; ship-generated waves

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