http://www.panomatics.com/nextgen/muc/seenschifffahrt/starnbergersee/
The captain pointed out the castle where Princess Sissi - later Empress of Austria and Queen of Hungary - was born Christmas 1837. Later he pointed out the wooden cross marking the place where Ludwig II of Bavaria drowned June 13, 1886. This date still is commemorated by the Bavarians.
Granted, the blue and white Bavarian flag waving proudly from the stern is much prettier then the German black/red/gold but Bavaria is now part of the German Federal Republic.