The supply for luxury yachts is growing which increases the competition between yachtbuilders. Additionally to lead time reduction, yachtbuilders are trying to maximise their output with the available space. This puts extra pressure on the logistics process. Waste in the logistics process reduces the efficiency and for that must be avoided. The available data of the logistics process of yachtbuilders can be limited since it is not their core-business. The objective of this thesis is to explain how a model of the logistics process of a yachtbuilder can be made and how it can be used to improve and predict the logistics performance. This thesis focuses on improving the interior logistics process at yachtbuilder Oceanco by reducing the non-value added movements waste.