This ship paper model is from kallboys, and the boat was from the 18th and 19 Century. The so-called Boender belong to the family of the Dutch Samoreusen. Upstream migratory shipwrights brought this design to the Middle Rhine. The Boender was in black - and built Rheindorf Mondorf and freight and passenger use. The model is a full hull model, but can also be built as a waterline model.
You can download this ship papercraft from here: A Boat on the Rhine Free Ship Paper Model Download