Until now, works in the field of tide routing (i.e., optimization of cargo loading and ship scheduling decisions in tidal ports and shallow seas) have omitted the uncertainty of sea level predictions. However, the widely used harmonic tide forecasts are not perfectly reliable. Consequences for the maritime industry are significant: current solutions to tide routing may be made robust through the introduction of arbitrary slack, but they are not optimal (Le Carrer et al. (2020)). Given the financial implications at stake for every additional centimeter of draft and the catastrophic effects of a grounding, an investigation of tide routing from the perspective of risk analysis is necessary.