Click the grey or white circles to select a pen or eraser, then draw your boat. If it is too dense it will sink. If it is top-heavy it may tip over. Click the check mark button when you are ready to test your boat; then click to place it in the water.
When you are drawing each pixel represents 1 mm. When you are testing each pixel represents 2 mm. Each frame (when the drawing moves) represents 0.01 s. The density of the building material is 2 g/cm³.
