This paper will focus on the use of simulation to help engineers meet the fluid dynamics aspects in the design of a single buoy mooring system. More specifically, the example model presented shows how FloMASTER can be used to completely design the piping network taking into account not only proper piping diameters needed for the required throughput and loading times, but also accounting for the pressure transients that may compromise the integrity of the transfer lines and result in spillage of product into the environment.