4. The programme of the Dutch organization for scientific research (NWO) funded the project Fish and Fortune (The watership floating fishpond and tugboat & the prosperity of Holland in the sixteenth and seventeenth century). In this project all the available archaeological watership data was gathered for analysis purposes. This data is stored in the maritime archaeology archive of the Netherlands Cultural Heritage Agency located in Lelystad. Project manager Prof. Van Holk kindly made the dataset available for a master thesis and subsequently for this paper.