The system considered in this paper involves a chemical plant with a continuous production process. Both the supply of raw materials and the export of finished products occur through ships loading and unloading at a plant-owned jetty. Since disruptions in the plant’s production process are very expen- sive, buffer tank capacity is required for sustained production and tolerance towards variations in ship arrivals and overseas exports through large ships. With respect to the original case study, some simpli- fications apply. For reasons of confidentiality, the diversity of ships has been skewed down, and their numbers modified. Also, details concerning tank operation, tank farm layout, and inland transport have been abstracted from. Still, the resulting model is general enough to draw conclusions applicable to many jetty simulation studies. Operational