Abstract
Nowadays smaller container terminals are facing an increase in traffic and ship sizes and are consequently subject to extreme pressure form ship-owners that require rapid and efficient transhipment operations in the port, the achievement of which is only possible with the assignment of the proper type and number of quay cranes to each ship and with a good level of synergy between the cranes and the transfer mechanisation. The latter has a significant impact on the cranes working and waiting times and affects the entirety of berth operations. Existing terminals that cannot afford to invest in new modern horizontal transport technologies are most commonly using yard trucks that provide less efficient port transfer operations. That is why in the paper a simulation approach has been used in order to determine how a different number of yard trucks assigned to a single quay crane can affect the productivity of that crane and the productivity of the whole berth subsystem.
Highlights
Container transport has increased drastically on the global scale over the last ten years
Nowadays smaller container terminals are facing an increase in traffic and ship sizes and are subject to extreme pressure form ship-owners that require rapid and efficient transhipment operations in the port, the achievement of which is only possible with the assignment of the proper type and number of quay cranes to each ship and with a good level of synergy between the cranes and the transfer mechanisation
The simulations showed that the terminal achieved the best results on the quay in the 3rd scenario when sixteen yard trucks (YTs) were serving quay crane (QC), while the worst results were achieved in the 1st scenario with five YTs on a single QC
Summary
Container transport has increased drastically on the global scale over the last ten years. As consequence smaller ports are gaining more importance in the maritime business They are under huge pressure, as ship-owners are continuously enlarging ship size. Smaller ports are forced to provide better terminal capacities and good operational productivity if they want to preserve the existing services or provide new ones Their existing efficiency is often not sufficient for accepting such ships, yet at the same time ship-owners demand facilitation of rapid transshipment and reduced costs in the ports. The proper functioning of the berth depends in large part on the chosen number and type of horizontal transport for transfer of container units from quay to yard and vice versa This affects the quay productivity as it can determinate if the quay crane (QC) will be able to effectuate the unloading/loading or not. They are affecting yard operations and its occupancy ratio
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