Modelagem da programação de navios para otimização no canal de acesso ao porto de Santos
Palavras-chave: Programação, logística portuária, canal de acesso, pesquisa operacional, simulação, otimização ABSTRACT The resource management in order to reach its maximum occupation requires not only the appropriate technique, but the incorporation of the uncertainties built in the process. This research uses the strength of each main streams of Operations Research: optimization and simulation in a logistic maritime context. Hence, the scheduling technique applied in a logistic system, and
... sociated to the flexibility of having the uncertainties of its process provides the maritime logistic decision makers a mathematical model that helps them to deliver a better occupation rate of the canal to access the port terminals. To accomplish such objective, it was developed an optimization model, inspired in the job shop problem, and applied in a logistic system capable to propose, from a ship list, the best schedule, changing the order of entrance and exit of the vessels, using information related to its port operations. Once the best order of vessel is found, it was tested in a simulation model with most of constraints incorporated including all steps of the process, loading/unloading process, and all uncertainties within each step of the process (resources availability, navigation rules, safety, and operations policy). Such hybrid modeling technique, it was achieved a realistic evaluation of the optimization proposition, with the results measurements well known by the port practicioners, such as occupancy rates, waiting time, and complete service time (Makespan). To reach such evaluation it was compared the impact of changing the operations policy of the canal (allowing or not the crossing of the ships while navigating) and calculated the operational benefits of using a dispatching efford to coordinate the canal instead of respecting its arrival order.