caption: The image shows a drawing of a boat in the water, with the words "Vendrukken van de Kroongrins van bohemen" written at the bottom. The boat is depicted in a realistic style, with its sails billowing in the wind and its hull glistening in the sunlight. The water is calm and still, reflecting the sky above. The colors used in the drawing are mostly shades of blue and white, giving the image a peaceful and calming atmosphere.