She was a classy thing; even John Jacob Astor sailed on her years before he died on the Titanic. The Kronprinz Wilhelm had some fancy accoutrements for her time, like a Marconi telegraph, central heat and electricity. Her First Class passengers could number over 360; she prided herself on offering luxury, but of course there were still Second and Third classes with almost 1,500 more travelers.
The Kronprinz Wilhelm only delighted paying passengers for a little less than 15 years. The outbreak of World War I forced her to become an auxiliary cruiser for the German navy, a fact which would eventually be her downfall. No, she wasn't sunk by a torpedo; remember, we're talking about ships that didn't sink.
During the war, the Kronprinz sank many ships and seized many others, mostly off the coast of Argentina and Brazil. She parked for a while in Portsmouth but was in the wrong place at the wrong time when the United States joined World War I by declaring war on Germany. Whoopsthe US seized the Kronprinz Wilhelm, renamed her the Von Steuben and put her back to work, this time as a troopship transporting US soldiers between America and Brest, France.
So, what eventually happened? Well, as the Von Steuben she had a U-Boat run-in or two, though she kept her hull above the waves. Eventually she was scrapped in Boston, sometime after 1923.
[Scanned images from a 1907 Norddeutscher Lloyd pamphlet: Jaunted]