![Prinzess Irene-Barbarossa Naples-1903-A224 Barbarossa. Postcard, about 1903.](http://prinzessirene.com/wp-content/uploads/2019/04/Prinzess-Irene-Barbarossa-Naples-1903-A224.jpg)
Barbarossa. Postcard, about 1903.
Prinzess Irene was one of eleven Barbarossa class ocean liners, which were launched between 1896 and 1901. These are the ships in the Barbarossa class (with launch dates):
Friedrich der Grosse (1896)*
Königen Luise (1896)*
Bremen (1896)*
König Albert (1899)*
Hamburg (1899)
Grosser Kurfürst (1899)*
Prinzess Irene (1900)*
Kiautschou (1900)
Moltke (1901)
Blücher (1901)
The North German Lloyd line operated the ships indicated with an asterisk (*).