This paper investigates whether Short-run Marginal Cost (SMC) pricing is feasible to implement in seaports and with what type of consequences, e.g. concerning cost coverage. Answering these questions requires an analysis of the cost structure of seaports and especially of seaport calls, as well as of how the division of these costs over the different actors runs. As from the moment that this information becomes available, it can be analysed to what extent SMC pricing can be applied in Public-Private Partnerships (PPPs) within the seaport sector. Till now, mainly seaport infrastructure is involved, including the seaport entry from the open sea.