For the Zeesenboot we have made a STL file available to 3D print a "waterline" base yourself, with which you may use the model as a waterline model.
Artitec kits consist of resin and etched metal components. In the box, you will find resin castings. This material sometimes needs to be sanded or trimmed so we recommend keeping a sharp scalpel and some sandpaper to hand. Resin is not coloured and can be painted with Humbrol enamel or acrylic paint. The small details are made of etched metal.