The Barbarossa class of ocean liners

Barbarossa. Postcard, about 1903.
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)*

Barbarossa (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 (*).