Prince Henry of Prussia (1862–1929) became the club's patron. Henry was interested in motor cars as well and supposedly invented a windshield wiper and, according to other sources, the car horn. In his honor, the "Prinz-Heinrich-Fahrt" (Prince Heinrich Tour) was established in 1908, like the earlier Kaiserpreis a precursor to the German Grand Prix. Henry and his brother William gave patronage to the Kaiserlicher Automobilclub (Imperial Automobile Club). Henry also was an early proponent of introducing submarines and airplanes. He had merchant ships converted into seaplane tenders for operations in the Baltic Sea. Henry respected his brother, but this attitude was not returned in the
Prince Eitel Friedrich of Prussia ships were named after Prince Eitel, the passenger ship "Prince Eitel Friedrich" (1901) and the Reich postal steamer "Prince Eitel Friedrich" (1904). Schench, G. "Handbuch über den Königlich Preuβischen Hof und Staat fur das Jahr 1908". Berlin, Prussia, 1907. <BR> Prince Eitel Friedrich of Prussia Prince Eitel Friedrich of Prussia (Wilhelm Eitel Friedrich Christian Karl; 7 July 1883 – 8 December 1942) was the second son of Emperor Wilhelm II of Germany by his first wife, Augusta Viktoria of Schleswig-Holstein. He was born and died in Potsdam, Germany. On 27 February 1906, Prince Eitel married Duchess Sophia Charlotte of Oldenburg