"Preussen (Preußen in German and as written on the vessel) (PROY-sin) was a German steel-hulled, five-masted, ship-rigged sailing ship built in 1902 for the F. Laeisz ...
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shipping company and named after the German state and kingdom of Prussia. She was the world's only ship of this class with five masts, carrying six square sails on each mast.
Until the 2000 launch of Royal Clipper, a sail cruise liner, she was the only five-masted full-rigged ship ever built." - (en.wikipedia.org 07.12.2023)