Berth Occupancy at Container Terminals: Comparison of Analytical and Empirical Results
Abstract
The different kinds of container ships with variable numberof containers arrive to porls, each container requiring single service.In this paper, an analytical approach is developed with thehelp of bulk queueing system, to analyze and to plan the berlhoccupancy depending on the number of containers in on boardand on shore and on the average waiting time/average servicetime ratios. The appropriate numerical results and graphs arepresented for direct determination of the berlh occupancies fordifferent number of containers.The arrivals of container ships at container terminal areusually a stochastic process. The number of berths required willdepend on the berth occupancy. In order to determine the numberof berths required, we have to know the distribution of shiparrivals and the distribution of ship service times includingpeak factors or seasonal variations. In this paper, the relationshipbetween berlh occupancy and container ship turnaroundtime at container terminal is based on bulk-arrivals and singleservice queueing models. We have assumed that the inter-arrivaltimes and service times follow appropriate probability distributionswith determined limitations. Howeve1; given resultscan be used with a high degree of confidence for first approximatesolutions and as the control of berth occupancy or wrivalof ship to berlh.References
Chaudhry, M. L. and Templeton,J. G. C. A First Course
in Bulk Queues, John Wiley and Sons, New York, 1983.
Jovanovic, S., Olivella, J. and Radmilovic, Z. 'Ro-Ro
Ship Turnaround Time in Port', Proceedings of the zui
International Conference on Maritime Transport and
Maritime History, pp. 151-163, Barcelona, 2003.
Kabak, I. W. 'Blocking and Delays in MXI/M/c bulk
arrival queueing systems', Management Science, Vol.
, No. 1, pp. 112-115,1970.
Radmilovic, Z. 'Ship-Berth Link as Queueing System in
Ports', Journal of Waterway, Port Coastal and Ocean
Engineering, Vol. 118, No. 5, pp. 474-495, 1992.
Radmilovic, Z. River Ports Throughput Capacity, (in
Serbian), Faculty of Transport and Traffic Engineering,
University of Belgrade, 1994.
Thoresen, C. Port Designer's Handbook: Recommendations
and Guidelines, Thomas Telford Limited, London,
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