Dynamics modeling and control of mooring lines while cargo vessels loading

Container ships should only make very small horizontal movements at the berth for efficient (off) loading of containers. This is especially a concern in ports directly facing the open ocean, where high swells at sea can cause harbor oscillations and low-frequency surge motions of the ship. A Developed mooring unit, the MoorMaster™, which replaces conventional mooring lines is addressed here. The hydraulics of the system have a strong deducting effects on the motions of the moored ship. Measurements at a container terminal port have shown that the surge motion of container ships was reduced from an amplitude of 1 meter to an amplitude in the order of 5 centimeters, while using MoorMaster™ units. However before MoorMaster™ units can be installed with confidence in other (new) terminals and comparisons can be made with other mooring systems, the characteristics of MoorMaster™ units should be included in numerical models for motions of moored ships. This paper addresses the operation mechanism of MoorMaster™ units. MoorMaster™ units act in two different states that in this paper both of them are explained and the results are given in a series of figures.

کلیدواژه ها:

Mooring ، MoorMaster units ، Shore-based mooring ، Vacuum based automated mooring technology ، MoorMaster automated mooring